6.a. When the number of poles in a squirrel-cage motor is changed from 4 to 8, the speed is A. not changed B. doubled C. reduced by half. D. increased four times. 6.b.If the speed of a centrifugal...

6.a. When the number of poles in a squirrel-cage motor is changed from 4 to 8, the speed is
A. not changed
B. doubled
C. reduced by half.
D. increased four times.
6.b.If the speed of a centrifugal pump is reduced to one-half the original value, the power will be reduced to
A. one-sixteenth.
B. one-eighth.
C. one-quarter
D. one-half.