Which of the following methods are used to produce ultrasonic waves?

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 piezoelectric material in a search unit which vibrates to produce ultrasonic waves is called:
• Which of the following is the least efficient generator of ultrasonic waves:
• Shear waves for ultrasonic testing are usually produced:
• One of the most common applications of ultrasonic tests employing shear waves is the:
• Which of the following methods might be used to reduce attenuation losses in an ultrasonic test?
• Sound waves which travel on the surface of a solid in a manner similar to waves on a water surface are called:
• The velocity of surface waves is approximately shear waves in the same material.
• An ultrasonic instrument control which is used to expand or contract the horizontal base line of an A scan display is called:
• An ultrasonic insrument control which is used to adjust the sharpness of the CRT screen display is called: