IV Match the clauses together to make sentences.

A

1 The motor-generator control provides voltage regulation for,

2 When the motor-generator is operating, PMG power flows to the rectifier,

3The dc signal is for

4 The signal then flows to

5 The voltage regulator supplies

6Monitoring protective circuits in the motor-generator control prevents

7The motor-generator solenoid control valve controls

8 The valve drives electrically to the closed position when

9When primary electrical power fails, the valve de-energizes and opens,

10 The entire operation is

B

a completely automatic upon primary electrical power failure. b routing hydraulic pressure to the hydraulic motor, driving the generator.

c primary electrical power is available.

d the operation of the emergency electrical power system.

e out-of-tolerance power from being connected to the essential bus system. f field excitation to the motor-generator and monitors the output voltage.

g the voltage regulator section of the motor-generator control unit.

h control panel and relay control power.

i where the three-phase ac is rectified to a dc signal.

j and fault detection of, motor-generator output.

1 Why can the hydraulic driven emergency generator only power a small number

of circuits?

2 What causes the rotor in the generator to turn?

3 What helps to maintain generator output frequency?

4 How is the generator cooled?

5 What is the purpose of the motor-generator control?

6 What is the function of the solenoid control valve?