Non Destructive Testing and Evaluation (Ultrasonic-Testing-Level-2 (Set-3) ) Solved MCQs
Non Destructive Testing and Evaluation (Ultrasonic-Testing-Level-2 (Set-3) ) Solved MCQs
Non Destructive Testing and Evaluation (Ultrasonic-Testing-Level-2 (Set-3) ) Solved MCQs
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52. Polished, flat surfaces are undesirable for ultrasonic testing
consideration because:
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A. Coupling losses are greater
Answer: D
B. Glycerine
C. Water
D. Grease
Answer: B
54. When using a straight beam technique to examine a thick test piece
what change(s) would you expect to see in back wall echo size as you
approach the side of the test piece? (Transducer remains completely on
test piece)
A. No change
B. Increase
C. Decrease
Answer: C
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Answer: C
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56. Which of the following describes the sound field propagating in a piece
of steel bar stock which is being tested from one end with longitudinal
waves?
A. Non uniform, containing maxima and minima because of the focusing effect of laterally
reflected waves
Answer: D
Answer: D
used on:
A. Polished surfaces
B. Castings
C. Flat surfaces
D. Non-polished surfaces
Answer: B
C. Any flaws
Answer: A
B. 10
C. 12
D. 14
Answer: C
A. 10
B. 14
C. 6
D. 20
Answer: B
B. Concave transducer
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C. Convex lens .c
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D. None of the above
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Answer: B
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64. A divergent sound beam is
A. Concave mirror
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B. Convex mirror
C. Convex lens
Answer: C
65. A type of cast iron which has ultrasonic properties similar to steel is:
A. White
B. Gray
C. Lamellar
D. Ductile
Answer: A
B. Decreases
C. No effect
Answer: C
B. 2%
C. 5%
D. 10%
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Answer: A
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68. In general, which of the following materials
ultrasonic attenuation? a
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A. Aluminium
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B. Silver
C. Lead
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D. Tungsten
Answer: A
B. Plate thickness
C. Frequency
Answer: D
B. Quartz
C. Dipotassoium tartrate
D. Rochelle salt
Answer: B
71. Which of the following methods are used to produce ultrasonic waves?
A. Magnetostrictive methods
B. Magnetoinductive methods
C. Piezoelectric elements
Answer: D
B. Improving penetration
Answer: A
C. An immersion method
Answer: C
B. Deep penetration
Answer: B
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