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WorksheetsQuiz 4: Magnetic Particle Testing
Total questions: 10
Worksheet time: 29mins
1. Circular magnetization is useful for the detection of:
a. Circular Cracks
b. Longitudinal Fractures
c. Transverse Fractures
d. All of the above
The best technique for locating deep-lying defects (1/8 in.) makes use of:
a. Alternating Current
b. Direct Current (battery)
c. Half-wave Current
d. High Voltage Current
For a given current passed through a part, increasing the diameter of the part will __________________ the field strength at the surface.
a. Increase
b. Decrease
What is the proper amperage for a circular field?
Part length = 46 in.
Part diameter = 3 in.
Number of coil turns = 5
What is the proper amperage for a longitudinal field?
Part length = 46 in.
Part diameter = 3 in.
Number of coil turns = 5
How many coil shots are necessary?
Part length = 46 in.
Part diameter = 3 in.
Number of coil turns = 5
To examine for longitudinal fractures on the inside diameter surface of a thick, hollow shaft you would:
a. Pass current through it
b. Insert it in a solenoid
c. Pass current through a central conductor
d. Pass current through a solenoid at its center
Demagnetization of a part is not necessary if:
a. The part is small
b. The continuous method is employed
c. The part is high carbon steel
d. The part is to be heat treated (above its curie point)
Prod spacing should be between:
a. 6 - 10 inches
b. 1 - 8 inches
c. 3 - 8 Inches
d. 10 - 15 inches
The type of field established by an electromagnetic yoke is a:
a. Longitudinal Field
b. Circular Field
c. Vector Field
d. Meridional Field
