單項(xiàng)選擇題

Which of the following statements concerning a simple parallel resistance circuit is correct?（）

A.The voltage drop across each resistor is the same
B.The total current flow equals the reciprocal of the sum of the individual currents
C.The total resistance equals the sum of the individual resistances
D.The total voltage equals the sum of the individual voltages across each resistance

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單項(xiàng)選擇題

A ground in an electrical circuit outside the engine room （）.

A.cannot be detected tinder normal conditions
B.is of no consequence to engineering personnel
C.is indicated at the branch circuit breaker panel
D.is indicated by the ground detecting lamps on the main switchboard

單項(xiàng)選擇題

Grease coatings on electrical contact surfaces increase contact resistance and should be removed with a/an （）.

A.small wire brush
B.compressed air jet
C.clean dry cloth
D.10% solution carbon solvent and water

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Which of the following statements concerning a simple parallel resistance circuit is correct?（）

你可能感興趣的試題

A ground in an electrical circuit outside the engine room （）.

Grease coatings on electrical contact surfaces increase contact resistance and should be removed with a/an （）.