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

76)   

The main cause of backfire in gas cutting is:

A.
B.
C.
D.
Answer: B
77)   

Preheating is necessary in gas cutting to:

A.
B.
C.
D.
Answer: C
78)   

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

A.
B.
C.
D.
Answer: C
79)   

The advantage of mechanized gas cutting is:

A.
B.
C.
D.
Answer: B
80)   

The drag in gas cutting should be:

A.
B.
C.
D.
Answer: B
81)   

The oxygen purity for cutting should be at least:

A.
B.
C.
D.
Answer: D
82)   

The cutting tip or nozzle is usually made of:

A.
B.
C.
D.
Answer: C
83)   

The correct torch movement for straight-line cutting is:

A.
B.
C.
D.
Answer: C
84)   

Oxygen hose color code is:

A.
B.
C.
D.
Answer: C
85)   

Acetylene hose color code is:

A.
B.
C.
D.
Answer: B
86)   

In gas cutting, piercing is the process of:

A.
B.
C.
D.
Answer: B
87)   

A common cause of poor cut quality is:

A.
B.
C.
D.
Answer: C
88)   

Preheat holes are arranged around:

A.
B.
C.
D.
Answer: A
89)   

Cutting speed increases with:

A.
B.
C.
D.
Answer: B
90)   

Gouging with oxy-acetylene is used to:

A.
B.
C.
D.
Answer: B
91)   

In multi-torch cutting machines, torches are arranged:

A.
B.
C.
D.
Answer: B
92)   

In gas cutting, dross is:

A.
B.
C.
D.
Answer: B
93)   

The typical oxygen consumption for cutting 25 mm steel is about:

A.
B.
C.
D.
Answer: B
94)   

The preheat flame type for cutting mild steel is:

A.
B.
C.
D.
Answer: A
95)   

Which metal cannot be cut by oxy-acetylene?

A.
B.
C.
D.
Answer: C
96)   

Gas cutting of stainless steel is difficult because:

A.
B.
C.
D.
Answer: B
97)   

The cutting oxygen stream should be:

A.
B.
C.
D.
Answer: B
98)   

In gas cutting, the kerf is:

A.
B.
C.
D.
Answer: B
99)   

The term "drag" in cutting refers to:

A.
B.
C.
D.
Answer: B
100)   

Oxy-acetylene cutting is most effective for:

A.
B.
C.
D.
Answer: B