

MCQOPTIONS
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1. |
Which of the following must not be done to maintain the magnetic field over the sample uniform in space and time? |
A. | Large pole pieces need to be used |
B. | Pole faces must be polished |
C. | Wide pole gap must be present |
D. | Magnets can be permanent or electromagnet |
Answer» D. Magnets can be permanent or electromagnet | |