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MCQ - TNPSC JTO

JTO - 440 - Welder

440 - Unit III Set the Oxygen Acetylene Gas Cutting Plant

65)   

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

A.
B.
C.
D.
66)   

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

A.
B.
C.
D.
67)   

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

A.
B.
C.
D.
68)   

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

A.
B.
C.
D.
69)   

For cutting cast iron, oxy-acetylene process is:

A.
B.
C.
D.
70)   

The cutting speed depends on:

A.
B.
C.
D.
71)   

The nozzle size in gas cutting is selected based on:

A.
B.
C.
D.
72)   

In gas cutting, the torch is inclined forward by:

A.
B.
C.
D.
73)   

The two types of gas cutting torches are:

A.
B.
C.
D.
74)   

The most common defect in gas cutting is:

A.
B.
C.
D.
75)   

Flashback arrestors are fitted to:

A.
B.
C.
D.
76)   

The main cause of backfire in gas cutting is:

A.
B.
C.
D.
77)   

Preheating is necessary in gas cutting to:

A.
B.
C.
D.
78)   

For 50 mm thick mild steel cutting, oxygen pressure is typically:

A.
B.
C.
D.
79)   

The advantage of mechanized gas cutting is:

A.
B.
C.
D.
80)   

The drag in gas cutting should be:

A.
B.
C.
D.