單項選擇題Which is a function of the voltage regulators used with AC generators?()

A.To cut out generators when they are no longer required
B.To cut in additional generators automatically as required
C.To divide the KW load equally between generators operating in parallel
D.To divide reactive current between generators operating in parallel


您可能感興趣的試卷

你可能感興趣的試題

1.單項選擇題The most inefficient method of voltage reduction from the stand point of power loss, is a/an ()

A.capacitor in series with the load
B.inductor in series with the load
C.capacitor and inductor in series with the load
D.resistor in series with the load

2.單項選擇題In a simple series circuit, the entire source voltage will drop across ()

A.the resistor next to the negative terminal
B.a short circuit
C.the resistor next to the positive terminal
D.an open circuit

3.單項選擇題The division of kilowatt load between two paralleled alternators is determined by the ()

A.amount of field excitation of the leading machine
B.load-speed characteristics of the governors
C.amount of field excitation to the lagging machine
D.type of alternator

4.單項選擇題The division of the kilowatt load between two AC generators operating in parallel is controlled by the settings and characteristics of the ().

A.voltage regulators
B.field rheostats
C.reverse power relays
D.prime mover governors

5.單項選擇題In a three-phase circuit, the phase voltages are ()

A.120°apart
B.160°apart
C.180°apart
D.360°apart

最新試題

If two A.C.generators are to be operated in parallel, the load is distributed evenly by()

題型:單項選擇題

If separating effect is not good, which measure should be taken ()

題型:單項選擇題

Which of the following items don’t belong to dock repair works?()

題型:單項選擇題

The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the()

題型:單項選擇題

As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?()

題型:單項選擇題

The additional mark ()in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.

題型:單項選擇題

During the diesel engine running, the water level of F.W expansion tank should normally kept in the () level of glass tube.

題型:單項選擇題

The ISPS Code consists of a mandatory section-Part A, which shows()

題型:單項選擇題

When does auxiliary burner of incinerator put into operation? ()Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish

題型:單項選擇題

The cetane rating of diesel fuel is an indication of the ()

題型:單項選擇題