71.
Which of the following statements is/are true for ultrasonic test?

72.
Radiographic appearance of inclusions resembles

75.
Ultrasonic testing can be used for (choose the correct combination of the following statements P, Q, R, S):
P. Quantitative analysis of phases
Q. Determination of elastic constants
R. Determination of endurance limit
S. Detection of internal defects

76.
In fracture control design procedures, NDT plays an important role because it primarily enables to

77.
Match the following:
Group 1 Group 2
P. Ultrasonic 1. change in accoustic impedence
Q. Radiography 2. change in thermal conductivity
R. Eddy current 3. change in electrical conductivity
S. Magnetic particle 4. change in density
5. change in magnetic flux leakage

78.
Match the NDT methods with the type of defects detected.
NDT methods Type of defects detected
P. Ultrasonic 1. Internal
Q. X-ray 2. Most
R. Eddy current 3. External
S. Liquid penetrant 4. Surface breaking

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