In order to change the direction of rotation of a D-Cmotor （）
(1) the field leads must be changed
(2) the input leads must be changed

If a small electric motor is immersed in salt water it should be （） (1) washed in fresh water (2) dried in an oven

A.(1) only
B.(2) only
C.both (1) and (2)
D.neither (1) or (2)

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The unit of electrical power is the （）

A.ampere
B.kilovolt
C.watt
D.farad

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