CWB 2 All Modules Exam 2025 Version Best Studying Material with All Questions, Exams of Radiology LATEST UPDATE ALREADY GRADED A
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Course
CWB 2
Institution
CWB 2
CWB 2 All Modules Exam 2025 Version Best
Studying Material with All Questions, Exams of
Radiology LATEST UPDATE ALREADY GRADED
ACWB 2 All Modules Exam 2025 Version Best
Studying Material with All Questions, Exams of
Radiology LATEST UPDATE ALREADY GRADED
ACWB 2 All Modules Exam 2025 Ver...
CWB 2 All Modules Exam 2025 Version Best
Studying Material with All Questions, Exams of
Radiology LATEST UPDATE ALREADY GRADED
A
An ultrasonic beam changes angle (refracts) when it travels from a plastic probe into a steel
specimen because:
A) The wave velocity is different in steel than in plastic
B) The frequency is different in steel than in plastic
C) Only transverse waves can travel in steel
D) The angle does not change
E) The amplitude is reduced by attenuation - ANSWER>>A) The wave velocity is different in steel
than in plastic
If you are examining a groove weld in a plate from one surface with an angle probe, you would
examine the upper portion of the weld by:
A) Placing the probe on the weld reinforcement
B) Moving the probe as close as possible to the weld
C) Using a normal probe close to the edge of the weld
D) Moving the probe away from the weld so the beam bounces off the lower surface to strike the
upper portion of the weld
E) None of the above. The upper portion cannot be examined - ANSWER>>D) Moving the probe
away from the weld so the beam bounces off the lower surface to strike the upper portion of the
weld
The first item that should be checked or calibrated on an angle probe is:
A) Wavelength
B) Angle
C) Linearity
D) Exit (index point)
Not applicable. Calibration is not necessary - ANSWER>>D) Exit (index point)
Sounds detectable by human ear are in the range of:
,A) 1 to 10 nHz
B) 1,000 to 10,000 cycles per second
C) 20 to 20,000 cycles per second
D) 20 kHz to 2,000 kHz - ANSWER>>C) 20 to 20,000 cycles per second
Ultrasonic testing frequencies are in the range of:
A) 50 to 500MHz
B) 2.25 to 10 MHz
C) 500 kHz to 5,000 MHz
D 500 kHz to 15 MHz - ANSWER>>C) 500 kHz to 5,000 MHz
Characteristics of a wave propagating through material are:
A) Wavelength, velocity and frequency
B) Density, colour, and weight
C) Melleability, hardness, and toughness
D) Frequency, Velocity, and surface finish - ANSWER>>A) Wavelength, velocity and frequency
Non-uniform stress in a rod is given by:
A) The load multiplied by the cross section area of the rod
B) The cross-sectional area of the rod divided by the load
C) The load divided by the cross-sectional area of the rod
D) Cannot be simply calculated - ANSWER>>D) Cannot be simply calculated
Strain in a body is the:
A) Extension divided by the original length
B) Extension multiplied by the original length
C) Original length multiplied by the extension
D) Original length divided by the extension - ANSWER>>A) Extension divided by the original
length
The elastic limit during tensile testing will be reached:
A) Before yield
B) After Yeild
C) After UTS
, D) At the point where the specimen fractures - ANSWER>>B) After Yeild
The UTS (ultimate tensile strength) on a stress-strain curve shows where the:
A) Maximum stress was recorded
B) Sample fractured
C) Sample changed from plastic or elastic behavior
D) Maximum yield point occurred - ANSWER>>A) Maximum stress was recorded
A Plasma is:
A) A gas made up of positive ions and free electrons
B) A liquid used to reduce adherence of spatter
C) The main component in an inverter power source
D) Always present in an electrical circuit - ANSWER>>A) A gas made up of positive ions and free
electrons
To increase melting rate (burn-off rate) in the shielded metal arc welding (SMAW) process, which
polarity should be used?
A) DCEP
B) ACEP
C) DCEN
D) ACEP - ANSWER>>C) DCEN
Which type of welding power source is used for the SMAW process?
A) Constant Current
B) Constant Voltage
C) Pulsed Current
D) Pulsed Voltage - ANSWER>>A) Constant Current
The purpose of a drooping welding power source is to produce:
A) Constant voltage regardless of the current demand
B) Constant arc length regardless of current
C) Nearly constant current regardless of voltage fluctuations
B) Low open circuit voltage - ANSWER>>C) Nearly constant current regardless of voltage
fluctuations
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