UT Programmed Instruction HB Vol. 1, Ch. 1 & 2

Question 1

Ultrasonic Testing is concerned with the back-and-forth movement of small particles of material within a test specimen. This back-and-forth movement is called a: 
A. Wavelength
B. Frequency
C. Vibration
D. Period

Answer 1

Ultrasonic Testing is concerned with the back-and-forth movement of small particles of material within a test specimen. This back-and-forth movement is called a:

C. Vibration

Question 2

If a surface is depressed and held, the distance the surface moved is called a:
A. Dent
B. Dimple
C. Displacement
D. Wavelength

Answer 2

If a surface is depressed and held, the distance the surface moved is called a:

C. Displacement

Question 3

Since a vibration is moving particles within a specimen, a vibration is really a back-and-forth movement of:
A. transducers
B. objects
C. cycles
D. energy

Answer 3

Since a vibration is moving particles within a specimen, a vibration is really a back-and-forth movement of:

D. energy

Question 4

Time is required for a vibration to move through one complete cycle. Of course, most vibrations pass through several cycles. The number of cycles in one second is called the:
A. wavelength
B. velocity
C. period
D. frequency

Answer 4

Time is required for a vibration to move through one complete cycle. Of course, most vibrations pass through several cycles. The number of cycles in one second is called the:

D. frequency

Question 5

A vibration is the back-and-forth movement of particles or molecules. One complete movement, first in one direction and then in the opposite direction is called a:
A. wavelength
B. cycle
C. period
D. frequency

Answer 5

A vibration is the back-and-forth movement of particles or molecules. One complete movement, first in one direction and then in the opposite direction is called a:

B. cycle

Question 6

Frequency is often abbreviated as Hz. This means:

A. Cycles per second
B. Periods per cycle
C. Seconds per cycle
D. acoustical impedance ratio

Answer 6

Frequency is often abbreviated as Hz. This means:

A. Cycles per second

Question 7

A relationship exists between the frequency and the time required to complete one cycle. If the frequency is known, we can divide the frequency into one (1/f) and get the time required for one complete cycle. The time required for one complete cycle is called the:

A. cycle
B. period
C. Wavelength
D. Frequency

Answer 7

A relationship exists between the frequency and the time required to complete one cycle. If the frequency is known, we can divide the frequency into one (1/f) and get the time required for one complete cycle. The time required for one complete cycle is called the:

B. period

Question 8

A sonic vibration is a back-and-forth motion of energy passing through a material as a series of small particle displacements. The frequency of vibration used in ultrasonic testing is normally above the range of human hearing. When the frequency is within the range of human hearing, the vibration is called sound.

A. True
B. False

Answer 8

A sonic vibration is a back-and-forth motion of energy passing through a material as a series of small particle displacements. The frequency of vibration used in ultrasonic testing is normally above the range of human hearing. When the frequency is within the range of human hearing, the vibration is called sound.

A. True

Question 9

Vibrations above 20,000 Hz are called \_\_\_\_\_ vibrations.
A. subsonic
B. long
C. ultrasonic
D. sonic

Answer 9

Vibrations above 20,000 Hz are called _____ vibrations.

C. ultrasonic

Question 10

In ultrasonic testing, the term “vibration” is used interchangeably with the term:

A. Cycle
B. frequency
C. velocity
D. ultrasound

Answer 10

In ultrasonic testing, the term “vibration” is used interchangeably with the term:

D. ultrasound

Question 11

Ultrasound moves as a series of small particle displacements and is energy in motion. The sqeed of movement through the material is called the:

A. frequency
B. impedance
C. Resistance
D velocity

Answer 11

Ultrasound moves as a series of small particle displacements and is energy in motion. The sqeed of movement through the material is called the:
Ultrasound moves as a series of small particle displacements and is energy in motion. The sqeed of movement through the material is called the:

D. velocity
D velocity

Question 12

In ultrasonic testing, the ultrasound injected into the material can be pulsed or continuous. The device used to inject the vibrations into the material is called a(n):

A. injector
B. beam
C. transducer
D. plug

Answer 12

In ultrasonic testing, the ultrasound injected into the material can be pulsed or continuous. The device used to inject the vibrations into the material is called a(n):

C. transducer