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MCQ - TNPSC JTO

JTO - 440 - Welder

440 - Unit III Set the Oxygen Acetylene Gas Cutting Plant

1)   

Which gas is most commonly used along with oxygen for gas welding?

A.
B.
C.
D.
Answer: B
2)   

The maximum flame temperature of oxy-acetylene flame is approximately:

A.
B.
C.
D.
Answer: D
3)   

LPG is preferred for cutting mild steel instead of acetylene when:

A.
B.
C.
D.
Answer: B
4)   

The gas with the highest flame temperature when burnt in oxygen is:

A.
B.
C.
D.
Answer: A
5)   

In welding, hydrogen is generally used for:

A.
B.
C.
D.
Answer: C
6)   

For underwater cutting, the gas mixture used is:

A.
B.
C.
D.
Answer: B
7)   

Which gas is not suitable for gas welding mild steel?

A.
B.
C.
D.
Answer: D
8)   

The main advantage of using acetylene over other fuels is:

A.
B.
C.
D.
Answer: C
9)   

LPG flame temperature with oxygen is approximately:

A.
B.
C.
D.
Answer: B
10)   

The main use of oxy-propane flame is:

A.
B.
C.
D.
Answer: B
11)   

Which gas is considered the most economical for large-scale cutting operations?

A.
B.
C.
D.
Answer: B
12)   

In welding, nitrogen gas is used mainly for:

A.
B.
C.
D.
Answer: A
13)   

The main danger of using acetylene at pressures above 15 psi is:

A.
B.
C.
D.
Answer: B
14)   

Oxy-acetylene flame is generally avoided for aluminium welding because:

A.
B.
C.
D.
Answer: B
15)   

Which fuel gas is often stored in liquid form?

A.
B.
C.
D.
Answer: B
16)   

The approximate flame temperature of oxy-hydrogen flame is:

A.
B.
C.
D.
Answer: B