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Governors > Class > Flashcards

Class Flashcards

1
Q

A governor by definition is

A

An automatic attachment for controlling speed

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2
Q

A governor by definition is

A

An automatic attachment for controlling speed

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3
Q

When a governor regulates a turbine by itself in isochronous form, it has speed droop true or false

A

False

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4
Q

Name four parts of a simple governor

A

Bald head, pilot and relay valve, servo motor, restoring mechanism

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5
Q

Name four parts of a simple governor

A

Bald head, pilot and relay valve, servo motor, restoring mechanism

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6
Q

What is the function of the pilot valve?

A

The function of the pilot valve is to provide hydraulic force that operates the relay valve

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7
Q

From which device does the governor get its sensitivity from?

A

The flyball

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8
Q

Which device is used to achieve stability within the governor system?

A

The compensating dashpot is used to achieve stability

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9
Q

Which device is used to achieve stability within the governor system?

A

The compensating dashpot is used to achieve stability

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10
Q

A generator with 5% speed droop applied senses a change in load true or false

A

True

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11
Q

A compensating dash pot has two pistons and

A

A needle valve

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12
Q

What is the function of the vibrating discs on the governor?

A

To reduce the sticking of the pilot valve and provide more sensitivity

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13
Q

Name four safety devices on the generator

A

The over speed device, low oil, pressure, switch, nozzle, deflectors, broken belt device

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14
Q

The auxiliary valve is used to

A

Manually operate the servo motor

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15
Q

What is the function of the restoring mechanism on the governor?

A

To re-center the pilot valve in its neutral position

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16
Q

What is the function of a permanent magnet generator on the turbine?

A

To supply electrical power to operate the ball head motor

17
Q

Where is the speeder spring located on the governor?

A

It is located next to the fly ball

18
Q

What is the function of the gate limit device?

A

D all of the above

19
Q

the Gov ball head has to spin at the same speed as the PMG. True or false

A

False

20
Q

The relay valve is positioned or operated by

A

The pilot valve

21
Q

What are the principle parts of a governor oil system?

A

Reservoir, accumulator, pump, and piping system

22
Q

The auxiliary valve provides control to the servo motor during these times

A

For maintenance purposes

23
Q

If a load on the turbine suddenly is rejected the ball head will

A

Increase speed immediately

24
Q

If load on the turbine suddenly increases, what will the floating lever do?

A

The upper floating lever will rise up

25
Q

The restoring mechanism transmits the amount and direction back to the governor control pilot valve until

A

The ports are closed or re-centered

26
Q

What is forced downward to unentered the pilot valve?

A

The speeder rod

27
Q

What is four indications of dirty governor oil

A

A dirty filter, varnish, dark color, sludge

28
Q

What are four desirable oil qualities for a governor?

A

Good lubricating quality, dissipates in trapped air, does not precipitate solids nor breaks down

29
Q

What are four desirable oil qualities for a governor?

A

Good lubricating quality, dissipates in trapped air, does not precipitate solids nor breaks down

30
Q

The ball head is connected to the relay valve true or false

A

False

31
Q

The dash pot needle is a means of adjustment to the wikit kits true or false

A

False

32
Q

The over speed device operates the shut down, solenoid, true or false

A

True

33
Q

The over speed device operates the shut down, solenoid, true or false

A

True

34
Q

The servo motor is a single acting cylinder that operates the wicked gates true or false

A

False it is a double acting cylinder

35
Q

On the restoring mechanism levers all of the fulcrum are not a fixed point true or false

A

True

36
Q

If the dash pot is adjusted to give too much compensation to the governor, it becomes sluggish, true or false

A

True

Governors (1 decks)

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