MCQ - TNPSC JTO
JTO - 440 - Welder
440 - Unit VI Gas Cylinders and Regulators
33)
Before fitting a regulator to a cylinder, the valve should be:
A.
B.
C.
D.
34)
Acetylene cylinders must be kept:
A.
B.
C.
D.
35)
If a gas leak is suspected, the safest way to check is by:
A.
B.
C.
D.
36)
In oxy-acetylene welding, the oxygen-to-acetylene ratio for neutral flame is:
A.
B.
C.
D.
37)
The hottest part of an oxy-acetylene flame is:
A.
B.
C.
D.
38)
Carburizing flame has:
A.
B.
C.
D.
39)
Oxidizing flame is suitable for welding:
A.
B.
C.
D.
40)
Neutral flame is used for:
A.
B.
C.
D.
41)
Acetylene gas is stored in acetone because:
A.
B.
C.
D.
42)
The regulator for oxygen is colored:
A.
B.
C.
D.
43)
The regulator for acetylene is colored:
A.
B.
C.
D.
44)
In oxy-acetylene cutting, oxygen is used for:
A.
B.
C.
D.
45)
Oxygen is heavier than air. True or False?
A.
B.
C.
D.
46)
The bursting disc in a cylinder is provided for:
A.
B.
C.
D.
47)
The safety valve in acetylene cylinder is located at:
A.
B.
C.
D.
48)
The fuse plugs in acetylene cylinders melt at about
A.
B.
C.
D.