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CWB Level 2 Closed Book Exam Questions and Answers Already Passed
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CWB Level 2 Closed Book Exam Questions and Answers Already Passed
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CWB Level 2 Closed Book ExamQuestions and Answers Already
Passed
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. ✔✔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. ✔✔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 ✔✔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 - ✔✔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 ✔✔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. ✔✔e) 300 cm.
As a general rule, weld discontinuities detected by ultrasonic testing are accepted or rejected on the
basis of:
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