CWB MOD 19 ULTRASONIC INSPECTION QUESTIONS AND ANSWERS RATED A+ 2024/2025

CWB MOD 19 ULTRASONIC INSPECTION


Exercise Questions - Section 1 & 2

1. The upper restriction of human hearing is about

a) 20 Hz

b) 20 kHz

c)20 MHz
b) 20 kHz


Exercise Questions - Section 1 & 2

2. A usual frequency used for ultrasonic trying out of welds is:

a) 2.25MHz

b) 2.25kHz

c) 2.25 Hz
a) 2.25MHz




Previous
Play
Next
Rewind 10 seconds
Move ahead 10 seconds
Unmute
zero:00
/
zero:15
Full display screen
Brainpower
Read More
Exercise Questions - Section 1 & 2

, three. If an ultrasonic wave in a block of metal has a wavelength of 1.Three mm and travels at a
speed of five.85 x 10 electricity of three m/s. What is the frequency?
Four.5MHz


Exercise Questions - Section 1 & 2

four. Do transverse waves in a solid travel quicker or slower than longitudinal waves?
Slower


Exercise Questions - Section 1 & 2

five. True or False

The electricity carried with the aid of a wave is proportional to the rectangular of the amplitude
True


We have an professional-written strategy to this hassle!
Exercise Questions - Section 1 & 2

6. If the amplitude of a wave is decreased to 25%, what is the corresponding drop in dB?
(Hint: you can figure it out from the information in section 2.5 but you may also use logarithm
tables or a calculator)
12dB


Exercise Questions - Section 1 & 2

7. The lower in energy of an ultrasonic wave because it travels via a cloth is called:

a) amplitude

b) amplification

c) attenuation
c) attenuation


Exercise Questions - Section 1 & 2

8. Piezoelectric crystals can: