4.RRB ALP CBT2 RAC Question bank

RAC

In a lap joint ———–

• The plates are joined at the edges
• The plates are kept on over other
• One plate is kept horizontally
• Other is vertical

In oxidizing welding flame proportion of ———-

• Acetylene is less than air
• Air is less than acetylene
• Acetylene is equal to air
• None of these

The temperature in a neutral flame with oxyacetylene welding is ——

• 3260°C
• 3500°C
• 2500°C
• 2800°C

The filler metal used in brazing has melting point of above-

• 200°C
• 300°C
• 420°C
• 520°C