单项选择题

On a diesel engine equipped with a hydraulic speed control governor, hunting in many cases can be corrected by adjusting the （）

A.accumulator spring compressor
B.balance piston
C.compensating needle valve
D.proportional piston

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单项选择题

Which of the following adjustments is always required whenever the diesel engine governor oil has been drained and renewed?（）

A.speed droop
B.compensation
C.idle speed setting
D.load limit control

单项选择题

Which of the following statements represents an advantage of an electromagnetic clutch?（）

A.Large misalignments can be tolerated between the shaft and engine coupling
B.Slip is held to a minimum when reversing shaft rotation
C.Engine torsion vibrations to the driven shaft are eliminated
D.It aids in maintaining power factor

单项选择题

Diesel engines driving alternators operating in parallel must maintain set frequency regardless of load changesThe governor characteristic used to accomplish this is known as （）

A.actuation
B.sensitivity
C.compensation
D.thrust shaft