PDF chapter test TRY NOW
1. To increase loudness of sound by four times, how much should the amplitude of vibration be changed?
a. The amplitude of the vibration determines the .
b. To increase loudness of sound by four times, the amplitude of vibration should be increased .
2. What is an ultrasonic sound?
a. Ultrasonic sound is defined as a sound with a frequency greater than .
b. Flaw detection in metals can be done using .
Register for free to see more content