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MCQ - Mechanical TNPSC JTO
JTO - 440 - Welder - 440 - Unit III Set the Oxygen Acetylene Gas Cutting Plant

51)   

The oxidizing flame temperature is approximately:

A.
B.
C.
D.
Answer: D
52)   

Carburizing flame is preferred in welding of:

A.
B.
C.
D.
Answer: C
53)   

A hissing sound from the flame usually indicates:

A.
B.
C.
D.
Answer: B
54)   

The feather in a carburizing flame is due to:

A.
B.
C.
D.
Answer: B
55)   

Neutral flame is preferred because:

A.
B.
C.
D.
Answer: A
56)   

The oxidizing flame is often used for:

A.
B.
C.
D.
Answer: D
57)   

Which flame causes zinc loss in brass welding?

A.
B.
C.
D.
Answer: B
58)   

Carburizing flame has what effect on mild steel welds?

A.
B.
C.
D.
Answer: B
59)   

The inner cone color in a neutral flame is:

A.
B.
C.
D.
Answer: B
60)   

Which type of flame has the highest flame velocity?

A.
B.
C.
D.
Answer: C
61)   

The principle of oxy-acetylene cutting is based on:

A.
B.
C.
D.
Answer: B
62)   

In gas cutting, the cutting jet consists of:

A.
B.
C.
D.
Answer: B
63)   

The main function of preheat flames in gas cutting is to:

A.
B.
C.
D.
Answer: B
64)   

The ignition temperature of steel in oxygen is about:

A.
B.
C.
D.
Answer: B
65)   

In oxy-acetylene cutting torch, the cutting oxygen lever is used to:

A.
B.
C.
D.
Answer: B
66)   

The number of preheat holes in a cutting nozzle is usually:

A.
B.
C.
D.
Answer: B
67)   

The oxygen pressure for cutting mild steel of 25 mm thickness is typically:

A.
B.
C.
D.
Answer: B
68)   

In oxy-acetylene cutting, slag formation is due to:

A.
B.
C.
D.
Answer: B
69)   

For cutting cast iron, oxy-acetylene process is:

A.
B.
C.
D.
Answer: B
70)   

The cutting speed depends on:

A.
B.
C.
D.
Answer: D
71)   

The nozzle size in gas cutting is selected based on:

A.
B.
C.
D.
Answer: C
72)   

In gas cutting, the torch is inclined forward by:

A.
B.
C.
D.
Answer: A
73)   

The two types of gas cutting torches are:

A.
B.
C.
D.
Answer: A
74)   

The most common defect in gas cutting is:

A.
B.
C.
D.
Answer: C
75)   

Flashback arrestors are fitted to:

A.
B.
C.
D.
Answer: B