RRB JE Mechanical-Industrial Questionbank 3

Mechanical-Engineering

The artificial activity, which indicates that an activity following it cannot be started unless the preceding activity is complete, is known as —-? (RRB Allahabad SSE 19.12.2010)

event
free float
artificial
dummy

Explanation:

A dummy activity, depicted by a dashed arrow, consumes no time or resources. It indicates logical precedence relationship.

A dummy activity —-? (RRB Mumbai JE 05.10.2008)

is artificially introduced
is represented by a dotted line
does not require any time
all of the above

Explanation:

Dummy activity does not consume any resources or time but is used to represent a connection between events. It is artificial and represented by a dotted line.

If D is the duration, ES and EF are the earliest start and finish times, LS and LF are latest start and finish times, then the following relation holds good —-? (RRB Mumbai SSE 05.10.2008)

EF = ES + D
LS = LF – D
LF = LS + D
all of the above

Explanation:

EF = ES + D, LS = LF – D, and LF = LS + D. All these relations are correct.

The difference between the time available to do the job and the time required to do the job, is known as —-? (RRB Mumbai JE 19.12.2010)

event
float
duration
constraint

Explanation:

Float is the delay provided to any activity, representing the difference between time available and time required to do the job.

The probability distribution of activity times in PERT follows following distribution —-? (RRB Mumbai SSE 19.12.2010)

normal
binomial
beta
Gaussian

Explanation:

In PERT, individual activities follow β-distribution. Expected time tₑ = (t₀ + 4tₘ + tₚ)/6.

The probability distribution of project completion in PERT follows following distribution —-? (DMRC JE 2013)

normal
binomial
beta
Gaussian

Explanation:

In PERT, individual activities follow β-distribution whereas whole project duration follows normal distribution.

If TL is the largest allowable event occurrence time, total activity slack (S) is equal to —-? (DMRC JE 20.04.2018)

latest start time – earliest start time
latest finish time – earliest finish time (EFT)
TL – EFT
all of the above

Explanation:

Total activity slack S = Latest start time – Earliest start time = Latest finish time – Earliest finish time = TL – EFT.

The critical activity has —-? (Konkan Railway STA 2017)

maximum float
minimum float
zero float
average float

Explanation:

Activities with zero float are called critical activities. The sequence of critical activities is the critical path.

The time by which the activity completion time can be delayed without affecting the start of succeeding activities, is known as —-? (Konkan Railway TA 2017)

duration
total float
free float
interfering float

Explanation:

Free float is the time by which activity completion can be delayed without affecting the start of succeeding activities.

PERT/CPM techniques can be used for following applications —-? (RRB Bangalore SSE 09.09.2012)

maintenance jobs
research and development
all non-technical jobs
all of the above

Explanation:

PERT/CPM techniques can be used for maintenance jobs, research and development, and all non-technical jobs.

PERT analysis is based on —-? (RRB Kolkata SSE 09.09.2012)

optimistic time
pessimistic time
most likely time
all of the above

Explanation:

PERT analysis is based on optimistic time (t₀), pessimistic time (tₚ), and most likely time (tₘ). Expected time tₑ = (t₀ + 4tₘ + tₚ)/6.

On a PERT/CPM chart ____ represents —-? (RRB Gorakhpur Design SSE 09.09.2012)

an ordinary event
a significant event representing some milestone
dangling event and dummy event
All of the above

Explanation:

On a PERT/CPM chart represents an ordinary event, a significant event representing some milestone, a dangling event, and a dummy event.

Pick up the correct statement. Dummy activity on a PERT/CPM chart means, it —-? (RRB Bhopal SSE 09.09.2012)

consumes time, but no resources
consumes resources but no time
consumes neither time nor resources
is a dangling event

Explanation:

Dummy activity consumes neither time nor resources. Dangling error occurs when an activity other than final activity does not have any successor activity.

Critical path on PERT/CPM chart is obtained by joining the events having —-? (RRB Chandigarh SSE 09.09.2012)

maximum slack
minimum slack
average slack
no slack

Explanation:

Critical path has zero slack. For critical path, Total float = Independent float = Free float.

Slack of various events on the critical path in PERT/CPM chart —-? (RRB Jammu SSE 09.09.2012)

increases continuously
decreases continuously
remains constant
may increase or decrease depending on various factors

Explanation:

Critical path has zero slack, meaning slack of various events on critical path in PERT/CPM chart remains constant.

The assumption in PERT is —-? (RRB Allahabad JE 09.09.2012)

a project will always be behind schedule, if left uncorrected
cost of project will always be more than the estimated cost, if no timely corrections are taken
a project can be subdivided into a set of predictable, independent activities
activities are fixed and can’t be changed

Explanation:

Assumptions in PERT: Activity durations are independent random variables, critical paths are independent, a project can be subdivided into predictable independent activities, and normal distribution can be applied.

Activity slack or float of any event on a PERT/CPM chart is represented by —-? (RRB Bhubneshwar JE 11 29.11.2008)

latest start time of succeeding event – earliest finish time of preceding event – activity time
latest start time of the event – earliest start time of the event
latest finish time of event – earliest finish time of the event
anyone of the above

Explanation:

Slack is with reference to an event and float is with respect to an activity. In general practice, they may be used interchangeably. Slack may be positive, negative, or zero.

The important rule in making a PERT is —-? (DMRC JE 22.09.2017)

an event can’t be accomplished until activities leading to it are completed
no activity from any event can be started from preceding event till it is completed
every activity must be completed before end point is reached
all of the above

Explanation:

Important rules in PERT: an event cannot be accomplished until activities leading to it are completed, no activity can be started from preceding event till completed, and every activity must be completed before end point is reached.

An event is indicated on the network by —-? (RRB Bhubneshwar JE-11 19.12.2010)

a straight line
a number enclosed in a circle or a square
a straight line with circles at the ends
a dotted line

Explanation:

An event is indicated on a network by a number enclosed in a circle or a square. It represents start and end of an activity.

In a PERT chart —-? (RRB Mumbai JE 05.10.2008)

all activities should be numbered
only important activities should be numbered
only critical activities are numbered
only selected activities are numbered

Explanation:

In PERT, all activities should be numbered. PERT is used when activity times are not known with certainty and is based on three time estimates.

Positive slack on a PERT indicates that project is —-? (RRB Mumbai JE 19.12.2010)

ahead of schedule
beyond schedule
as per schedule
on critical path

Explanation:

Positive slack (Tₗ > Tₑ) indicates project is ahead of schedule. Negative slack indicates project is behind schedule. Zero slack indicates project is on schedule.

Pessimistic time is —-? (DMRC JE 2013)

the maximum time which an activity might require
the average time required for a job
the most probable time considering all conditions
the minimum time in which an activity can possibly be accomplished

Explanation:

Pessimistic time is the maximum time an activity might require. Optimistic time is the least time. Most likely time is the best estimate assuming no problems.

In PERT analysis, critical path is obtained by joining events having —-? (Konkan Railway STA 2017)

+ve slack
-ve slack
zero slack
dummy activities

Explanation:

Critical path is obtained by joining events having zero slack.

The slack on various events at critical path will be —-? (RRB Kolkata Diesel JE 25.10.2009)

same as at the end point
decreasing proportional to that at the end point
increasing proportional to that at the end point
maximum compared to other events

Explanation:

Slack on various events at critical path will be same as at the end point.

A critical path on a PERT chart —-? (RRB Mumbai C&G JE 25.10.2009)

starts from start point and ends at end point
starts from start point and may end anywhere
may start from anywhere but ends at end point
may start and end at any point

Explanation:

Critical path is the path which takes the longest time to complete the project. It starts from the start point and ends at the end point.

Given an annual usage value of 400 units, procurement cost is 20 per order, cost per piece is 100 and cost of carrying inventory is 10%. Calculate the economic order quantity. RRB JE (Re-Exam) 04.06.2025

Explanation:

D = 400 units, C₀ = 20, Cₕ = 10% of 100 = 10. EOQ = √(2DC₀/Cₕ) = √(2×400×20/10) = √16000/10 = √1600 = 40.

The area between the ‘Total revenue’ line and the ‘Total costs’ line to the right of the breakeven point represents —-? RRB JE (Re-Exam) 04.06.2025

fixed costs
loss zone
profit zone
variable costs

Explanation:

To the right of the break-even point, total revenue exceeds total costs, indicating profit. At break-even point, total costs and total revenues are equal (no profit no loss).

EOQ stands for —-? RRB JE (Re-Exam) 04.06.2025

Electrical Ordering Quantity
Economic Ordering Quantity
Electronic Ordering Quantity
Ensemble Ordering Quantity

Explanation:

EOQ stands for Economic Ordering Quantity. At EOQ, total cost is minimum and ordering cost equals holding cost.

In graphical representation of the cost-volume relationship, the point where the ‘Total revenue’ line intersects the ‘Total costs’ line represents the —-? RRB JE (Re-Exam) 04.06.2025

variable costs
break-even point
maximum profit
margin of safety

Explanation:

The point where total revenue line intersects total cost line represents the break-even point. At this point, total revenue equals total costs (no profit no loss).

The concept ____ is derived from the Pareto’s 80/20 rule curve. RRB JE (Re-Exam) 04.06.2025

XYZ
FSN
ABC
VED

Explanation:

ABC concept is derived from Pareto’s 80/20 rule. ABC, VED, HML are selective inventory control techniques. Class A: 10-20% items account for 70-80% consumption value.

Given an annual usage value of 400 units, procurement cost is 20 per order, cost per piece is 100 and cost of carrying inventory is 10%. Calculate the EOQ. RRB JE Stage 2 (22.04.2025 9:00 AM-11:00 AM)

Explanation:

D = 400, C₀ = 20, Cₕ = 10% of 100 = 10. EOQ = √(2DC₀/Cₕ) = √(2×400×20/10) = 40.

Which of the following does NOT belong to assumptions in calculating EOQ in the basic inventory model? RRB JE Stage 2 (22.04.2025 9:00 AM-11:00 AM)

Lead time is constant
Material cannot be supplied in variable quantities
Delivery of all items are instantaneous
Demand is continuous

Explanation:

EOQ assumptions: demand is known, constant and continuous; lead time is constant; replenishment is instantaneous; no stock outs allowed; ordering and holding costs are constant. Material cannot be supplied in variable quantities is not an EOQ assumption.

Identify the class A items as per the ABC analysis in inventory. RRB JE Stage 2 (22.04.2025 9:00 AM-11:00 AM)

10-20% of the items account for 70-80% of the consumption
The balance 65-75% account for 5-10% of the consumption
The next 15-25% account for 10-20% of the consumption
The balance 65-75% account for 70-80% of the consumption

Explanation:

ABC analysis: Class A: 10-20% of items account for 70-80% of consumption value (High priority). Class B: 30-40% of items account for 15-25% (Medium). Class C: 40-50% of items account for 5-10% (Low).

____ class items are those that are 30-40% of all inventory items, and account for 30-40% of the total rupee consumption volume. These are important, but not critical. RRB JE Stage 2 (22.04.2025 9:00 AM-11:00 AM)

Explanation:

B items are 30-40% of inventory items and account for 30-40% of total rupee consumption volume. They are important but not critical and don’t pose sourcing difficulties.

Inventory control begins with ____ analysis, a fundamental supply chain activity frequently performed by inventory controllers. RRB JE Stage 2 (22.04.2025 9:00 AM-11:00 AM)

FSN
XYZ
ABC
VED

Explanation:

ABC analysis stands for A item (High value, low quantity), B item (Moderate value, moderate quantity), C item (Low value, high quantity).

The primary purpose of job rating or evaluation is to —-? RRB JE Stage 2 (22.04.2025 2:30-4:30 PM)

provide benefits like leave and housing
determine the relative worth of different jobs
assess an employee’s performance
motivate employees for higher production

Explanation:

The primary purpose of job rating or evaluation is to determine the relative worth of different jobs, creating a structured hierarchy ensuring fair pay and transparent compensation.

Which of the following inventory costs represents the cost of loss of demand due to shortage in supplies? RRB JE 29-08-2019

Procurement cost
Unit cost
Stockout cost
Carrying cost

Explanation:

Stockout cost represents the cost of loss of demand due to shortage in supplies. Shortage cost = Number of units short × shortage cost per unit.

The amount of time elapsed from the moment an inventory replenishment order is placed and the moment the supplier delivers the goods is —-? RRB JE 29-08-2019

Takt time
Lead time
Cycle time
Order time

Explanation:

Lead time is the amount of time elapsed from placing an inventory replenishment order to delivery. If lead time is more, minimum inventory level will be high.

Inventory control and quality control is involved in which of the following phases of production planning and control? RRB JE 29-08-2019

Pre-planning stage
Action stage
Monitoring stage
Planning stage

Explanation:

Production planning and control has three stages: Planning stage, Action stage, and Monitoring stage. Monitoring stage uses inventory control, tool control, cost control, quality control.

Which of the following is referred to as MRP II? RRB JE 29-08-2019

Materials Requirement Planning
Materials Resources Policy
Manufacturing Resources Planning
Maximum Retail Price

Explanation:

MRP II stands for Manufacturing Resources Planning. MRP I stands for Material Requirement Planning.

The demand rate for a particular item is 12000 units/year. Ordering cost is Rs. 100 per order and holding cost is Rs. 0.80 per item per month. If no shortages are allowed and replacement is instantaneous, then the economic order quantity is —-? RRB JE 29-08-2019

1000 units
500 units
2000 units
1500 units

Explanation:

D = 12000 units/year, C₀ = 100, Cₕ = 0.80 × 12 = 9.6 per unit/year. EOQ = √(2×12000×100/9.6) = √(24,00,000/9.6) = √250000 = 500 units.

Which of the following is not a part of the 5S system? RRB JE 30-08-2019

Seiri
Seiton
Seiso
Seiku

Explanation:

5S system includes: Seiri (Sort), Seiton (Set in order), Seiso (Shine), Seiketsu (Standardize), and Shitsuke (Sustain). Seiku is not part of 5S.

Which of the following is not a method of financial incentive payment? (RRB Chandigarh SSE 25.10.2009)

Halsey premium plan
Rowan premium plan
Taylor differential piece rate system
Jhonson’s premium plan

Explanation:

Financial incentive methods include Halsey premium plan, Rowan premium plan, Taylor differential piece rate system, Bedaux premium plan. Jhonson’s premium plan is not a recognized method.

The break even point is obtained at the intersection of —-? (RRB Allahabad JE 25.10.2009)

the variable cost line and selling cost line
the total cost line and total sales line
the total cost line and the variable cost line
the variable cost line and the fixed cost line

Explanation:

Break even point is obtained at the intersection of total cost line and total sales line.

The fixed cost of producing a component is Rs. 2,00,000 per year and variable cost is Rs. 3.00. Selling price is Rs. 30.00. The number of components to be produced to achieve break even is —-? (RRB Patna JE 25.10.2009)

4700
3700
10000
7400

Explanation:

BEP = F/(S – V) = 2,00,000/(30 – 3) = 2,00,000/27 = 7407 ≈ 7400 units.

The main purpose of “Break Even Analysis” is to —-? (RRB Allahabad SSE 09.09.2012)

Decrease the cost of manufacturing
Increase profit margin on a product
Increase sales of an organization
Determine the minimum quantity that must be produced to earn profit

Explanation:

Break Even Analysis is the study of cost-volume-profit relationship to determine the minimum quantity that must be produced to earn profit.

A toy manufacturing factory has annual capacity of 12,000 toys. Fixed costs are rupees 1 lakh/year, variable cost rupees 20 per unit and selling price rupees 40 per unit, the quantity to break-even is —-? (RRB Kolkata SSE 09.09.2012)

5000
300
2500
None of these

Explanation:

BEP = F/(S – V) = 1,00,000/(40 – 20) = 1,00,000/20 = 5000 units.

In Break even analysis total cost consists of —-? (RRB Bhopal SSE 09.09.2012) (RRB Mumbai SSE 05.10.2008)

Fixed cost
Variable cost
Fixed cost + Variable cost
Fixed cost + Variable cost + Profit

Explanation:

Total cost in break even analysis consists of fixed cost and variable cost.

Initial cost of making a product is 1,00,000 and variable cost per unit is 40. If selling price is 80 per unit, what would be the break even quantity? (RRB Jammu SSE 09.09.2012)

2500 units
3500 units
5000 units
7000 units

Explanation:

BEP = F/(S – V) = 1,00,000/(80 – 40) = 1,00,000/40 = 2500 units.

Break-even point shows that —-? (RRB Jammu SSE 09.09.2012) (RRB Mumbai SSE 05.10.2008) (RRB Bhubneshwar JE II 29.11.2008)

sales revenue > total cost
sales revenue < total cost
sales revenue = total cost
variable cost = fixed cost

Explanation:

Break-even point shows no profit and no loss, where sales revenue = total cost.

Break-even analysis can be used for —-? (RRB Patna JE 25.10.2009)

Short run analysis
Long run analysis
Average of above two run
There is no such criterion

Explanation:

Break-even analysis can be used for short run analysis. It is the study of cost-volume-profit relationship.

The selling cost of a product is S and the variable cost is V, then profit volume ratio is —-? (RRB Gorakhpur RDSO SSE 25.10.2009)

(S – V)/S
(V – S)/V
(V – S)/V
(S – V)/V

Explanation:

Profit volume ratio = (S – V)/S, where S = selling cost and V = variable cost.

Break Even point represents —-? (RRB Chandigarh SSE 25.10.2009)

Profit
Loss
No profit and No Loss
None of these

Explanation:

Break Even point represents no profit and no loss.

Break-Even analysis consists of —-? (Konkan Railway TA 2017) (RRB Gorakhpur Design SSE 09.09.2012) (RRB Allahabad SSE 19.12.2010)

Fixed cost
Variable cost
Fixed and Variable cost
Operation cost

Explanation:

Break even analysis consists of fixed and variable cost. BEP = F/(S – V).

A manufacturer has three products A, B and C. The profit gained by selling these products is Rs. 50, Rs. 25 and Rs. 60, respectively. What will be the objective function for the formulation of Linear Programming Problem? (DMRC JE 2013)

Minimize z = 50x₁ + 25x₂ + 60x₃
Minimize z = 50x₁ + 25x + 60x₃
Maximize z = 50x₁ + 60x₃
Maximize z = 50x₁ + 25x₂ + 60x₃

Explanation:

Objective function for maximizing profit: Maximize z = 50x₁ + 25x₂ + 60x₃.

The J.I.T refers to —-? (RRB Allahabad JE 19.12.2010)

Production control
Financial control
Cost control
Inventory control

Explanation:

JIT (Just in Time) is an inventory management method where goods are received from suppliers only as needed to reduce holding costs and increase inventory turnover.

What do you mean by the term EOQ in an inventory control? (BMRCL JE 24 Feb. 2019)

Easily ordered quantity
Easy and open quantity
Eco-friendly observed quality
Economic order quantity

Explanation:

EOQ = √(2DCₒ/Cₕ), where D = Annual Demand, Cₒ = Ordering cost, Cₕ = Carrying cost.

In ABC classification system of inventory management, ____ group items have low level of safety stock. (DMRC JE 22.09.2017)

A
B
C
Any of these

Explanation:

Class A items have high value and require strict control with low safety stock due to high investment.

In inventory control, the economic order quantity (EOQ) is the —-? (RRB Chandigarh SSE 09.09.2012) (RRB Mumbai JE 05.10.2008)

optimum lot size
maximum size of inventory
corresponding to break-event point
none of the above

Explanation:

EOQ is the optimum lot size where total cost is minimum. At EOQ, ordering cost = holding cost.

In inventory management when the quantities needed over subsequent periods of time are known with certainty, it is called —-? (RRB Mumbai SSE 19.12.2010)

Lead demand
Probabilistic demand
Deterministic demand
Direct demand

Explanation:

Deterministic demand is when quantities needed over subsequent periods are known with certainty, expressed as constant or variable demands over equal periods.

What is lead time in inventory management? (DMRC JE 20.04.2018)

The time taken by the manufacturer to prepare and send the bill of materials (BOM) to the vendor
The time taken between the requisition of an item and its delivery
The time required for the complete production of a finished product from raw material
The time taken by the manufacturer to pay the supplier for raw materials

Explanation:

Lead time is the time taken between requisition of an item and its delivery. It includes administrative, manufacturing, transporting, and inspection lead time.

The application of control chart in industrial engineering is —-? (Konkan Railway SSE 2015)

to control inventory
to schedule production
for preventive maintenance
for material handling

Explanation:

The application of control chart in industrial engineering is to control inventory. Control charts include X chart, R chart, P-chart, and C-chart.

Which one of the following item gets the maximum attention in ABC inventory control technique? (RRB Chandigarh SSE 25.10.2009)

Surplus items
More in demand items
Perishable in nature items
Costly items

Explanation:

Class A items (costly items) – only 10% in number but account for 75% of annual inventory usage value. They require high attention.

ABC analysis deals with —-? (RRB Gorakhpur RDSO SSE 25.10.2009)

Analysis of process chart
Flow of metals
Ordering schedule of job
Controlling inventory costs money

Explanation:

ABC analysis is based on Pareto’s law and deals with controlling inventory costs.

In perpetual inventory control, the material is checked as it reaches its —-? (RRB Allahabad JE 25.10.2009)

Minimum value
Maximum value
Average value
Middle value

Explanation:

In perpetual inventory control, material is checked when it reaches minimum value (reorder point).

In ABC analysis, A-type inventory represents —-? (RRB Bhopal TM SSE 25.10.2009)

High value, High volume
High value, Low volume
Low value, Low volume
Low value, High volume

Explanation:

Class A: High value, low volume. Class B: Medium value, medium volume. Class C: Low value, high volume.

Which of the following is not significant in determination of economic order quantity in inventory control? (DMRC JE 2013)

Ordering cost
Lead time
Inventory carrying cost
All of these

Explanation:

Lead time is not significant in EOQ determination. EOQ depends on ordering cost, holding cost, and annual demand.

Percent idle time for men and machines is found by —-? (JMRC JE 10.06.2017)

Time study
Analytical sampling/Work sampling
Analytical estimating
ABC analysis

Explanation:

Work sampling (analytical sampling) is a measurement technique for quantitative analysis of activities of men, machines, or any observable state of operation.

Identify the method which is not a LPP technique —-? (RRB Bhopal TM SSE 25.10.2009)

Graphical method
Transportation problem
Simplex method
ABC analysis

Explanation:

ABC analysis is not a part of linear programming technique. LPP techniques include graphical method, transportation problem, and simplex method.

Inventory can be in the form of —-? (RRB Mumbai SSE 19.12.2010)

Raw materials
In process goods
Brought out part, semi finished goods and subassemblies
All of the above

Explanation:

Inventory includes raw materials, in-process goods, finished goods, subassemblies, etc.

Two groups of costs in inventory control are —-? (DMRC JE 20.04.2018)

Carrying costs and ordering costs
Relevant costs and ordering costs
Carrying costs and total costs
Relevant costs and total costs

Explanation:

Two groups of costs in inventory control are carrying costs and ordering costs.

In basic economic order quantity model, at optimal order quantity —-? (DMRC JE 2013)

Holding cost is more than ordering cost
Holding cost is less than ordering cost
Holding cost equal to ordering cost
Holding cost is two times the ordering cost

Explanation:

At EOQ, holding cost = ordering cost. EOQ = √(2DC₀/Cₕ).

The formula for economic order quantity does not contain —-? (Konkan Railway STA 2017)

Order cost
Carrying cost
Cost of the item
Annual demand

Explanation:

EOQ formula does not contain cost of the item. It contains ordering cost, holding cost, and annual demand.

When order quantity increases the ordering costs will —-? (RRB Chandigarh SSE 25.10.2009)

Increase
Decrease
Remains same
None of the above

Explanation:

As order quantity increases, ordering cost decreases because fewer orders are placed.

One of the important reason for carrying inventory is to —-? (RRB Gorakhpur RDSO SSE 25.10.2009)

Improve customer service
Get quantity discounts
Maintain operational capability
All of the above

Explanation:

Reasons for carrying inventory: ensure smooth production, get quantity discounts, improve customer service, maintain operational capability, and enjoy economies of large-scale buying.

If the annual demand of an item becomes half, ordering cost doubles, holding cost one-fourth and the unit cost twice, then what is the ratio of the new EOQ and the earlier EOQ? (RRB Allahabad JE 19.12.2010)

1/2
1/√2
2
√2

Explanation:

EOQ₂/EOQ₁ = √[(D₂/D₁) × (Cₒ₂/Cₒ₁) × (Cₕ₁/Cₕ₂)] = √[(1/2) × 2 × 4] = √4 = 2.

Which one of the following is an inventory system that keeps a running record of the amount in storage and replenishes the stock when it drops to a certain level by ordering a fixed quantity? (RRB Mumbai JE 19.12.2010)

EOQ
Periodic
Peripheral
ABC

Explanation:

EOQ (Wilson Harris model) is an inventory system that keeps a running record and replenishes stock when it drops to a certain level.

Match List-I with List-II and select the correct answer: (JMRC JE 10.06.2017)

A-3, B-1, C-4, D-2
A-3, B-4, C-1, D-2
A-2, B-1, C-4, D-3
A-2, B-4, C-1, D-3

Explanation:

Procurement cost → Cost of receiving order (2). Carrying cost → Cost of holding materials (1). Economic order quantity → Break-even analysis (4). Reorder point → Procurement lead time (3).

There are two products A and B with characteristics: Product A: D=100, Cₒ=100, Cₕ=4. Product B: D=400, Cₒ=100, Cₕ=1. The economic order quantities of A and B will be in ratio —-? (DMRC JE 22.09.2017)

1:1
1:2
1:4
1:8

Explanation:

EOQₐ = √(2×100×100/4) = 50√2. EOQ_b = √(2×400×100/1) = 200√2. Ratio = 50:200 = 1:4.

Consider the following costs: 1. Cost of inspection and return of goods 2. Cost of obsolescence 3. Cost of scrap 4. Cost of insurance 5. Cost of negotiation with suppliers. Which of these are related to inventory carrying cost? (Konkan Railway SSE 2015)

1, 2 and 3
1, 3 and 4
2, 3 and 4
2, 4 and 5

Explanation:

Inventory carrying costs include cost of obsolescence, scrap cost, insurance cost, and handling cost.

Which cost elements are considered while determining the Economic Lot Size for purchase? (RRB Gorakhpur RDSO SSE 25.10.2009)

1, 2 and 3
1 and 2
2 and 3
1 and 3

Explanation:

Inventory carrying cost and procurement cost are determined while determining economic lot size for purchase.

Annual demand for a product costing Rs. 100 per piece is Rs. 900. Ordering cost per order is Rs. 100 and inventory holding cost is Rs. 2 per unit per year. The economic lot size is —-? (RRB Mumbai C&G SSE 25.10.2009)

200
300
400
500

Explanation:

D = 900, Cₒ = 100, Cₕ = 2. EOQ = √(2×900×100/2) = √90000 = 300.

If orders are placed once a month to meet an annual demand of 6,000 units, then the average inventory would be —-? (RRB Allahabad SSE 09.09.2012)

200
250
300
500

Explanation:

Q_avg = Demand/(Orders per year) = 6000/12 = 500 units.

Break-even analysis shows profit when —-? (RRB Jammu SSE 09.09.2012)

sales revenue > total cost
sales revenue = total cost
sales revenue < total cost
variable cost < fixed cost

Explanation:

Break-even analysis shows profit when sales revenue is greater than total cost.

The break-even point represents —-? (RRB Kolkata SSE 09.09.2012)

the most economical level of operation of any industry
the time when unit can run without loss and profit
time when industry will undergo loss
the time when company can make maximum profits

Explanation:

The break-even point represents the time when unit can run without loss and profit.

Inventory control in production, planning and control aims at —-? (RRB Allahabad JE 25.10.2009)

achieving optimisation
ensuring against market fluctuations
acceptable customer service at low capital investment in inventory
discounts allowed in bulk purchase

Explanation:

Inventory control aims at acceptable customer service at low capital investment in inventory.

In inventory control, the economic order quantity is the —-? (RRB Gorakhpur RDSO SSE 25.10.2009)

optimum lot size
highest level of inventory
lot corresponding to break-even point
capability of a plant to produce

Explanation:

EOQ is the optimum lot size in inventory control.

Inventory management consists of —-? (RRB Mumbai SSE 19.12.2010)

effective running of stores
state of merchandise methods of storing and maintenance etc.
stock control system
all of the above

Explanation:

Inventory management consists of effective running of stores, state of merchandise methods of storing and maintenance, and stock control system.

In perpetual inventory control, the stock is checked when it reaches its —-? (DMRC JE 2013)

minimum value
maximum value
average value
original value

Explanation:

In perpetual inventory system, stock is checked when it reaches minimum value (reorder point).

What is a primary advantage of using an open impeller design? RRB JE Stage 2 (22.04.2025 9:00 AM-11:00 AM)

Complete elimination of cavitation risks
Easier inspection and cleaning compared to closed impellers
Improved efficiency due to reduced flow separation
Higher pressure generation compared to radial flow pumps

Explanation:

The primary advantage of open impeller design is easier inspection and cleaning due to open structure, providing better access to impeller vanes.

According to Maslow’s Hierarchy of Needs, the basic requirements such as food, water, sleep are categorised into —-? RRB JE Stage 2 (22.04.2025 2:30-4:30 PM)

esteem needs
social needs
self-actualisation needs
physiological needs

Explanation:

According to Maslow’s Hierarchy, basic requirements like food, water, sleep are categorised into physiological needs.

What does symbol ‘D’ imply in work study? (RRB Mumbai SSE 19.12.2010)

inspection
transport
delay/temporary storage
permanent storage

Explanation:

In work study, symbol ‘D’ implies delay/temporary storage. Other symbols: O = Operation, □ = Inspection, ⇒ = Transport, ▽ = Permanent storage.

What does symbol ∇ imply in work study? (Konkan Railway STA 2017)

operation
inspection
delay/temporary storage
permanent storage

Explanation:

In work study, symbol ∇ implies permanent storage.

The wastage of material in the store is taken into account by the following method in the evaluation of the material issued from the store —-? (RRB Kolkata Diesel JE 25.10.2009)

inflated system
primary cost method
current value method
fixed price method

Explanation:

Wastage of material in the store is taken into account by the inflated system method in evaluation of material issued from store.

Bar charts are suitable for —-? (RRB Mumbai C&G JE 25.10.2009)

minor works
major works
large projects
all of the above

Explanation:

Bar charts are suitable for short works/minor works. They are the simplest way of representing frequency distribution.

The factor considered for wage determination in the flat day rate basic wage incentive plan is —-? RRB JE Stage 2 (22.04.2025 2:30-4:30 PM)

individual performance
company profit
hours worked
number of pieces produced

Explanation:

The flat day rate basic wage incentive plan compensates employees based on hours worked, irrespective of individual performance or quantity of output.

An XYZ television supplier found demand of 200 sets in July, 225 in August and 245 in September. Find demand forecast for October using simple average method. RRB JE 29-08-2019

224 units
150 units
200 units
175 units

Explanation:

ADF = (200 + 225 + 245)/3 = 670/3 = 223.33 ≈ 224 units.

Pallet is an example for which operating principle of material handling plan? RRB JE 31-08-2019

Flow principle
Gravity principle
Space utilization principle
Unit load principle

Explanation:

Pallet is an example of unit load principle of material handling. A pallet is a horizontal platform for unit loads, lifted and moved by material handling equipment.

Material handling and plant location is analysed by —-? (DMRC JE 2013)

Gantt chart
bin chart
Emerson chart
travel chart

Explanation:

Material handling and plant location is analysed by travel chart, which gives an estimate of number of materials handling between various workstations.

Which of the following is the principles of material handling? (RRB Malda SSE 25.10.2009)

Keep all handling minimum
Select only efficient handling equipment
Move the heaviest weight to the least distance
All of these

Explanation:

Principles of material handling include keeping all handling minimum, selecting only efficient handling equipment, and moving heaviest weight the least distance.

Condition monitoring is the basis for ____ maintenance. (RRB Mumbai C&G SSE 25.10.2009)

preventive
shutdown
breakdown
predictive

Explanation:

Condition monitoring is the basis for predictive maintenance, which predicts when equipment failure might occur and prevents it by performing maintenance.

What is the time period between two successive orders called as? (RRB Bhopal TM SSE 25.10.2009)

Order cycle
Order review
Ordering process
Ordering period

Explanation:

Order cycle is the time period between two successive orders. Re-order level = Lead time × Demand.

Which material handling devices are used for movement of materials in a fixed route and fixed area of operation? (RRB Bangalore SSE 09.09.2012)

Cranes
Pallets
Industrial Trucks
Elevators

Explanation:

Cranes are used for movement of materials in a fixed route and fixed area of operation. They can lift twenty-five tons or more.

Material handling in Automobile industry is done by —-? (RRB Gorakhpur Design SSE 09.09.2012)

Overhead crane
Trolley
Belt Conveyor
None of them

Explanation:

Material handling in automobile industry uses overhead cranes to handle raw materials in fixed route and fixed area of operation.

Conveyors are used when the material is transferred under which of the following conditions? (RRB Chandigarh SSE 09.09.2012)

Continuous transfer of materials
Uniform loads
Fixed routes
all of these

Explanation:

Conveyors are used for continuous transfer of materials, uniform loads, fixed routes, and moving homogeneous material.

In handling materials during manufacture of cement, which among the below given options is widely used? (RRB Allahabad JE 09.09.2012)

Bucket elevator
Fork Lift truck
Belt conveyor
Drag chain feeder

Explanation:

Bucket elevator is widely used in handling materials during manufacture of cement. They raise or lower material in the vertical direction.

A Transportation firm has 4 exit (Supply) points and 5 entry (Demand) points. Total number of entries is greater than exits. The number of entries excluding degeneracy would be —-? (RRB Bhubneshwar JE 11 29.11.2008)

Explanation:

Since total entries (5) > total exits (4), add one dummy exit. Total exits = 5, entries = 5. Number of iterations = m + n – 1 = 5 + 5 – 1 = 9.

Which of the following category of material handling equipments? (RRB Kolkata SSE 09.09.2012)

Lifting and lowering devices
Transportation devices
Combination devices
All of these

Explanation:

Categories of material handling equipment: Lifting and Lowering Devices, Transportation Devices, and Combination Devices.

Which of the following is/are transportation devices? (RRB Patna JE 25.10.2009)

Winch crab
Block and tackle
Hoists
All of these

Explanation:

Transportation devices include hand truck, power truck, small electric train, tractor with trailer, pump and pipeline, winch crab, block and tackle, and hoists.

In material handling equipment hoists is known as —-? (RRB Malda SSE 25.10.2009)

Lifting and lowering devices
Transportation devices
Combination devices
None of them

Explanation:

Hoists are lifting and lowering devices used to lift or move material with lifting force provided by a drum or wheel on which rope wraps.

In material handling equipment fork lift truck works for —-? (RRB Gorakhpur RDSO SSE 25.10.2009)

Lifting and lowering the materials
Transportation the materials
Lifting and transportation the materials
None of them

Explanation:

Fork lift truck works for lifting and transportation of materials. It is a powered industrial truck used to lift and move materials over short distances.

Which material handling equipment widely used in modern industry? (RRB Kolkata Diesel JE 25.10.2009)

Lifting and lowering devices
Transportation devices
Combination devices
None of them

Explanation:

Combination devices (crane truck, lift truck, fork lift truck, overhead travelling crane, conveyors) are widely used in modern industry.

Which material handling device or equipment moves material continuously from one position to another? (DMRC JE 20.04.2018)

Conveyors
Crane
Hoists
None of the above

Explanation:

Conveyors transport material continuously from one position to another. Applications include moving homogeneous material, fixed route, constant rate, and mass production.

Which conveyor widely used for continuous supply of coal to the boiler furnace? (DMRC JE 2013)

Belt conveyor
Roller Conveyor
Screw Conveyor
Spiral Conveyor

Explanation:

Belt conveyor is widely used for continuous supply of coal to the boiler furnace.

Overbridge crane —-? (RRB Mumbai C&G SSE 25.10.2009)

moves in longitudinal direction only
moves in transverse direction only
moves both in longitudinal and transverse direction
moves in rotary direction

Explanation:

Overbridge cranes run on rail tracks near the roof and move both in longitudinal and transverse direction.

The following is used to transport material having flat bottoms —-? (RRB Gorakhpur RDSO SSE 25.10.2009)

Belt conveyor
Roller conveyor
Chain conveyor
None of the above

Explanation:

Roller conveyor is normally used to transport material having flat bottoms. It consists of a series of rollers supported within a frame.

The following is supported from the ceilings —-? (RRB Allahabad JE 25.10.2009)

Roller conveyor
Belt conveyor
Screw conveyor
All of the above

Explanation:

Screw conveyor is supported from the ceilings. It consists of a rotating screw shaft installed within a trough.

Special purpose material handling equipments are used in —-? (RRB Allahabad SSE 09.09.2012)

Process layout
Line layout
Both ‘a’ and ‘b’
None of the above

Explanation:

Special purpose material handling equipment is used in line layout (product layout).

Which of the following application is a belt conveyor used for? (RRB Kolkata SSE 09.09.2012)

Material transportation over long distances
Material transportation within premises
Material transportation for processing
All of the mentioned

Explanation:

Belt conveyor is used for material transportation over long distances, within premises, and for processing.

Statement 1: It is generally not possible to change the direction of flow with belt conveyors. Statement 2: If belt conveyors are to be used in the bent position, slat belts are used. (RRB Bhopal SSE 09.09.2012)

True, False
True, True
False, False
False, True

Explanation:

Flow through belt conveyor is unidirectional, so direction change is not possible. For bent position, slat belts are used.

Slat belts are made up of —-? (RRB Jammu SSE 09.09.2012)

Wood
Plastic
Metal
Any of the mentioned

Explanation:

Slat belts are manufactured out of metal, engineering plastics, and wood.

Statement 1: Belt conveyors cannot be used in the inclined position. Statement 2: Screw conveyors can carry more amount of load compared to belt conveyors. (RRB Bhubneshwar JE II 29.11.2008)

True, False
True, True
False, False
False, True

Explanation:

Belt conveyors can be used in inclined position. Screw conveyors cannot carry more load compared to belt conveyors.

In the specifications of a screw conveyor, the shaft length is ____ than the flight length. (RRB Jammu SSE 09.09.2012)

Shorter
Larger
Either larger or shorter
Equal

Explanation:

In screw conveyor, shaft length is larger than flight length. Shaft length covers entire shaft whereas flight length covers first screw to last screw.

Statement 1: Chain drive rollers move faster than belt driven rollers. Statement 2: Screw conveyors are used in feeding raw materials like wheat into grinding unit. (RRB Kolkata SSE 09.09.2012)

True, False
True, True
False, False
False, True

Explanation:

Chain drive rollers move faster than belt driven rollers. Screw conveyors are used in feeding raw materials like wheat into grinding units.

Pneumatic conveying is done under which of the mentioned conditions? (RRB Bhopal TM SSE 25.10.2009)

High pressure
Vacuum
Fluidization
Any of the mentioned

Explanation:

Pneumatic conveying can be done under high pressure, vacuum, or fluidization conditions.