CWB LEVEL 2 CLOSED BOOK QUESTIONS AND
ANSWERS
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. - Answers-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 - Answers-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 - Answers-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. - Answers-b) Crack.
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. - Answers-b)
Is the back reflection signal.
Which of the following is a stainless steel electrode?
a) E4918-1
b) E4918-A1
c) E4818
d) E308-16
e) E4111 - Answers-d) E308-16
Reverse polarity refers to the use of a:
a) AC power source, electrode +
b) DC power source, electrode +
c) AC power source, electrode -
d) DC power source, electrode - - Answers-b) DC power source, electrode +
Which welding process(es) can result in metallic inclusions in the weld?
a) SMAW.
b) FCAW.
c) GMAW.
d) GTAW.
e) SAW - Answers-d) GTAW.
In producing a drawing for a scale of 1:50, what would be the distance represented by a
distance on the drawing of 6 cm?
a) 12 cm.
b) 30 cm.
c) 50 cm.
d) 240 cm.
e) 300 cm. - Answers-e) 300 cm.
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. - Answers-c) 0.025 in.
ANSWERS
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. - Answers-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 - Answers-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 - Answers-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. - Answers-b) Crack.
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. - Answers-b)
Is the back reflection signal.
Which of the following is a stainless steel electrode?
a) E4918-1
b) E4918-A1
c) E4818
d) E308-16
e) E4111 - Answers-d) E308-16
Reverse polarity refers to the use of a:
a) AC power source, electrode +
b) DC power source, electrode +
c) AC power source, electrode -
d) DC power source, electrode - - Answers-b) DC power source, electrode +
Which welding process(es) can result in metallic inclusions in the weld?
a) SMAW.
b) FCAW.
c) GMAW.
d) GTAW.
e) SAW - Answers-d) GTAW.
In producing a drawing for a scale of 1:50, what would be the distance represented by a
distance on the drawing of 6 cm?
a) 12 cm.
b) 30 cm.
c) 50 cm.
d) 240 cm.
e) 300 cm. - Answers-e) 300 cm.
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. - Answers-c) 0.025 in.
