The power factor of an AC generator operating singularly is determined by the_______ .

A．connected load

B．prime mover speed

C．field excitation

D．generator's rated voltage

[单选题]The frequency of an AC generator is controlled by theA．rheostatB．governorC．exciterD．capacitor

[单选题]The frequency of an AC generator is controlled by the ___.A．rheostatB．governorC．exciterD．capacitor

[名词解释] 英译汉：power factor

[单选题]The governor of a generator engine is to （）.A . make the engine stopB . regulate the timing of camshaftsC . make the rpm stabilize at any required valueD . make the engine run at nearly constant speed

[单选题]Modern handheld digital tachometers operated by counting light pulses returned to the unit byA．the tach generatorB．either the coupling or shaftC．a small bulb attached to the shaftD．a piece of reflective tape

[单选题]How would the exhaust of a properly operating diesel engine appear?（）.A . Light blue hazeB . Light brown hazeC . Light gray hazeD . Perfectly clear

[单选题]F．or most diesel propulsion and generator engines, the over-speed trip device will stop the engine byA．moving the governor control to stopB．shutting off the lubricating oil supplyC．tripping the governor emergency stop leverD．shutting off the fuel sup

[单选题]The emergency generator or emergency battery is connected to _______on most large ships.A．distribution boardsB．section boardsC．emergency switch boardsD．main switch boards

[名词解释] 英译汉：generator

[主观题]Theship’sgeneratorbrokedown,andthepumpshadtobeoperated___insteadofmechanically.A．)artificiallyB)automaticallyC)manuallyD)synthetically