The depth of penetration of surface waves is approximately:

Related MCQs

• Sound waves of a frequency beyond the hearing range of the human ear are referred to as ultrasonic waves or vibrations, and the term embraces all vibrational waves of frequency greater than approximately:
• The velocity of surface waves is approximately shear waves in the same material.
• Sound waves which travel on the surface of a solid in a manner similar to waves on a water surface are called:
• Greater depth of penetration in coarse grained material may be achieved using:
• Cracks, lack of penetration, lack of fusion which are surface breaking on a welded aluminium plate which has been liquid penetrant tested will show as:
• The radiation from 37 GBq (1 Ci) of Co-60 (0.145 Gy or 14.5R at 30.5 cm or 1 foot) is attenuated in air to approximately 5mR/h at a distance of approximately:
• When a probe is coupled to a solid, strong surface waves may be produced:
• To avoid interfering surface waves, low frequencies should only be used on:
• Which of the following conditions would be most likely to cause strong, interfering surface waves?
• Which of the following test frequencies would generally provide the best penetration in a 12 inch thick specimen of coarse-grained steel?