CWB Level 2 Closed Book Questions
and Answers 100% Correct
To measure the strength of a welded joint what mechanical test would you prescribe?
a) A transverse weld tension test.
b) A charpy test.
c) A CTOD test.
d) An all weld metal tension test.
e) A side bend test. - ANSWER-a) A transverse weld tension test.
Select the cutting process that would provide the narrowest heat affected zone when
cutting 12.5 mm (0.5 in) thick carbon steel.
a) Oxy-acetylene cutting.
b) Air-carbon arc cutting.
c) Oxy-propane cutting.
d) Plasma arc cutting.
e) Laser beam cutting - ANSWER-e) Laser beam cutting
Which of the following refers to a welder test where a pipe assembly is placed vertically
and the joint welded in the horizontal position without rotating the assembly?
a) 1G
b) 2G
c) 3G
d) 5G
e) 6G - ANSWER-b) 2G
Which of the following imperfections is normally considered as unacceptable regardless
of size or location?
a) Porosity.
b) Crack.
c) Inadequate penetration.
d) Lamination.
e) Burn-through. - ANSWER-b) Crack.
Select the correct penetrameter thickness for 2% sensitivity when radiographing a
weldment 1.25 inches in thickness.
, a) 0.012 in.
b) 0.015 in.
c) 0.025 in.
d) 0.030 in. - ANSWER-c) 0.025 in.
Which of the following operations is known to result in the emission of ionizing radiation
at levels dangerous to human health?
a) Shielded metal arc welding.
b) Plasma arc welding.
c) Operation of high voltage portable generator sets.
d) Radiographic inspection.
e) Electroslag and electrogas welding. - ANSWER-d) Radiographic inspection.
The ultrasonic transducer is pressed against the plate of a welded joint. The sound
travels longitudinally through the plate to the opposite side. The signal seen on the UT
screen that comes from this opposite side of the plate:
a) Is the initial pulse signal.
b) Is the back reflection signal.
c) Is the front reflection signal.
d) Must be equal in amplitude to any defect signal.
e) Cannot be used for establishing the thickness of the material under test. - ANSWER-
b) Is the back reflection signal.
Constant potential power sources with the slope control are used for which type of
mode of transfer?
a) Globular transfer.
b) Spray transfer.
c) Pulsed current transfer.
d) Short circuit transfer.
e) Axial spray transfer. - ANSWER-d) Short circuit transfer.
Which of the following is a stainless steel electrode?
a) E4918-1
b) E4918-A1
c) E4818
d) E308-16
e) E4111 - ANSWER-d) E308-16
Reverse polarity refers to the use of a:
a) AC power source, electrode +
and Answers 100% Correct
To measure the strength of a welded joint what mechanical test would you prescribe?
a) A transverse weld tension test.
b) A charpy test.
c) A CTOD test.
d) An all weld metal tension test.
e) A side bend test. - ANSWER-a) A transverse weld tension test.
Select the cutting process that would provide the narrowest heat affected zone when
cutting 12.5 mm (0.5 in) thick carbon steel.
a) Oxy-acetylene cutting.
b) Air-carbon arc cutting.
c) Oxy-propane cutting.
d) Plasma arc cutting.
e) Laser beam cutting - ANSWER-e) Laser beam cutting
Which of the following refers to a welder test where a pipe assembly is placed vertically
and the joint welded in the horizontal position without rotating the assembly?
a) 1G
b) 2G
c) 3G
d) 5G
e) 6G - ANSWER-b) 2G
Which of the following imperfections is normally considered as unacceptable regardless
of size or location?
a) Porosity.
b) Crack.
c) Inadequate penetration.
d) Lamination.
e) Burn-through. - ANSWER-b) Crack.
Select the correct penetrameter thickness for 2% sensitivity when radiographing a
weldment 1.25 inches in thickness.
, a) 0.012 in.
b) 0.015 in.
c) 0.025 in.
d) 0.030 in. - ANSWER-c) 0.025 in.
Which of the following operations is known to result in the emission of ionizing radiation
at levels dangerous to human health?
a) Shielded metal arc welding.
b) Plasma arc welding.
c) Operation of high voltage portable generator sets.
d) Radiographic inspection.
e) Electroslag and electrogas welding. - ANSWER-d) Radiographic inspection.
The ultrasonic transducer is pressed against the plate of a welded joint. The sound
travels longitudinally through the plate to the opposite side. The signal seen on the UT
screen that comes from this opposite side of the plate:
a) Is the initial pulse signal.
b) Is the back reflection signal.
c) Is the front reflection signal.
d) Must be equal in amplitude to any defect signal.
e) Cannot be used for establishing the thickness of the material under test. - ANSWER-
b) Is the back reflection signal.
Constant potential power sources with the slope control are used for which type of
mode of transfer?
a) Globular transfer.
b) Spray transfer.
c) Pulsed current transfer.
d) Short circuit transfer.
e) Axial spray transfer. - ANSWER-d) Short circuit transfer.
Which of the following is a stainless steel electrode?
a) E4918-1
b) E4918-A1
c) E4818
d) E308-16
e) E4111 - ANSWER-d) E308-16
Reverse polarity refers to the use of a:
a) AC power source, electrode +
