The important difference between AC and DC current for magnetic partic – McqOptions

MCQOPTIONS

1.	The important difference between AC and DC current for magnetic particle testing purposes is:
A.	The skin effect caused by DC adds mobility to the magnetic particles
B.	The resulting AC magnetic fields are more difficult to demagnetize
C.	The DC magnetic fields are more penetrating
D.	The AC magnetic fields are stronger
Answer» D. The AC magnetic fields are stronger

Discussion

No Comment Found

Related MCQs

A term used to describe the range of radiation intensities falling on the film during exposure is:
The term used to describe the reaction of human reproductive cells, to ionizing radiation is:
The term used to describe the reaction of human cells, other than reproductive cells, to ionizing radiation is:
The amount of radioactivity which corresponds to 3.7 1010 disintegrations per second is called:
A method of compensating for the dead zone or near surface resolution problems is to:
When a small diameter tube is placed in a glass of water, water rises in the tube to a level above the adjacent surface. This is called:
A penetrant process in which excess penetrant is removed with an organic solvent is called:
A penetrant process which employs an emulsifier as a separate step in the penetrant removal process is called:
Which of the following statements accurately describes the capabilities of liquid penetrant testing?
How is the size of a liquid penetrant indication usually related to the discontinuity it represents: