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Flashcards in Important Things to Know Deck (127)
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1

What is the turbine called that has HP and LP section on separate shaft?

Cross Compound

2

The greatest amount of steam expansion takes place in the?

LP Stage

3

On a reaction turbine the largest blades are in the?

LP Reaction

4

Gas turbines have the highest pressure in the?

Compressor Diffuser

5

Emergency blowdown valves prevent?

Over Pressuring the system

6

what does large diameter steam blading allows for?

High Volume Of Steam

7

What is used to help prevent steam leakage from blade sections?

Shrouding or Shrouds

8

Condenser in the turbine allows steam to perform more work by reducing pressure and?

Less Back Pressure and Recycle Condensate
(Time more efficient)

9

S.A.V is closed by?

Governor

10

Is the overspeed trip mounted on the rotor shaft?

Yes, the bolt has the center of gravity slightly of center of the shaft.

11

What is the first step in starting a gas turbine?

Start button but always follow Manufactures Pre-startup Checks

12

The transition piece connects the inner lines of the power plant combustor to?

Combustion chambers to the turbine and it's duct.

13

What do the moving blades of the turbine consist of?

Disc or Drum Wheels

14

Name for stationary blades?

Nozzles

15

For expansion on turbines sliding dovetails are used?

On rotors for holding reaction blades

16

Spherical bearings used on turbines to?

To compensate for sag on shaft

17

Carbon rings are machined because they?

Fit with very close tolerance

18

On a gasoline carburetor how is the amount of gas delivery controlled?

(Butterfly Valve) Throttle Valve

19

Propane and most carbs used a?

Spray Bar or Nozzles

20

Excessive crankshaft deflection will most likely cause?

Broken crank or fatigue failure

21

What is a micron?

Millionth of a meter
.001 mm

22

What does a magneto ignition system consist of?

*Magnets
*Coil (transformer)
*Spark Plug
*Generates its own power

23

On a 4 stage cycle engine, intake valves opens and closes once, while the crankshaft turns how many degrees?

720°

24

What is artificial respiration when dealing with stationary engines?

Air is forced in to the cylinder

25

What controls the collapse of the primary field of the coil on an electric ignition system?

Transistors

26

Lacing is used in what section of the turbine?

LP Section
(Reaction Blades)

27

Labyrinth seals, seal on the principal of?

Bernoulli Principle
(Knife edges)

28

You start up a piece of equipment after an overhaul you get very high vibration readings, the next step is to?

Shut it down!

29

If you get fluctuations readings when you first start the equipment, wait for readings to settle, this is known as?

Hunting

30

On electric motor, vibration readings are highest in the axial direction, the problem is most likely?

Misalignment