TRAVIS CANNING
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power engineering 3b2 Quiz on power prep quiz 6, created by TRAVIS CANNING on 27/02/2016.

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TRAVIS CANNING
Created by TRAVIS CANNING almost 9 years ago
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power prep quiz 6

Question 1 of 18

1

Some of the characteristics which make the gas turbine a better choice over other prime movers are
1. low maintenance
2. minimum cooling water
3. high thermal efficiency
4. rapid start-up and loading

Select one of the following:

  • 1,2,3,4

  • 1,2,3

  • 1,2,4

  • 1,3,4

  • 2,3,4

Explanation

Question 2 of 18

1

The air side of a gas turbine regenerator is located

Select one of the following:

  • before the compressor

  • after the combustion chamber

  • between the turbine and combustion chamber

  • downstream of the compressor

Explanation

Question 3 of 18

1

A gas turbine performs most effectively if

Select one of the following:

  • lube oil is of the proper viscosity

  • cooling water temperature is kept low

  • ambient air temperature is high

  • ambient air temperature is low

  • loaded immediately after starting

Explanation

Question 4 of 18

1

A combined steam and gas turbine arrangement can be termed

Select one of the following:

  • an ideal system

  • a cogeneration system

  • a once through system

  • ideal relative to system efficiency

  • a higher capacity system

Explanation

Question 5 of 18

1

The purpose of a regenerator is

Select one of the following:

  • to clean the exhaust gases

  • to improve the efficiency of the turbine

  • to increase the temperature in the combustion chamber

  • to lower the temperature in the combustion chamber

  • to recirculate the exhaust gases back through the compressor

Explanation

Question 6 of 18

1

A __________ is suitable for use in unmanned and remote locations

Select one of the following:

  • steam turbine plant

  • cogeneration plant

  • gas turbine system

  • nuclear plant

  • thermal generating plant

Explanation

Question 7 of 18

1

Gas turbine advantages include
1. high thermal efficiency
2. lower initial cost
3. quick start up
4. little cooling water requirements
5. power to mass ratio is high
6. remote operation

Select one of the following:

  • 1,2,3

  • 2,3,4,5,6

  • 1,2,4,6,

  • 1,3,4

  • 1,2,3,4,5,6

Explanation

Question 8 of 18

1

Disadvantages of a closed cycle gas turbine include:
1. higher initial cost
2. increased cooling water requirements
3. turbine blade fouling
4. they require more creep resistant material than open cycle turbines

Select one of the following:

  • 1,2

  • 2,3,4

  • 1,2,4

  • 1,2,3

  • 1,2,3,4

Explanation

Question 9 of 18

1

The output power on a gas turbine increases when its colder outside because

Select one of the following:

  • cooling water requiremetns are lower

  • colder air has the ability to hold more moisture

  • higher compressor volumetric efficiency

  • mass flow of the incoming air is greater

  • all of the above

Explanation

Question 10 of 18

1

A ________ gas turbine system uses the same working fluid over and over again.

Select one of the following:

  • open cycle

  • dual shaft

  • closed cycle

  • regenerator

  • emergency power

Explanation

Question 11 of 18

1

The major components of a gas turbine system include.

Select one of the following:

  • low pressure compressor, turbine and duxt burner

  • compressor, combustor and regenerator

  • compressor, combustor and turbine

  • starting motor, oil coolers and flux capacitor

  • generator, compressor, turbine and combustor

Explanation

Question 12 of 18

1

Two stage compression is used in a gas turbine system to:

Select one of the following:

  • increase turbine output

  • reduce the size of the machine

  • lower the amount of fuel consumed

  • reduce maintenance costs

  • increase the compressor life

Explanation

Question 13 of 18

1

A regenerator in a gas turbine cycle is located:

Select one of the following:

  • between the combustor and the turbine

  • between air compressor stages

  • prior to air compression

  • between the compressor and the combustor

  • at the turbine outlet

Explanation

Question 14 of 18

1

A gas turbine is most efficient when
1. clean fuel is used
2. turbine blades are clean
3. gas path is clean
4. lubricating oil is clean
5. ambient air temp is low
6. operated at 1/2 load

Select one of the following:

  • 1,2,3,4,6

  • 1,2,3,4,5

  • 2,3,4,5,6

  • 1,3,5

  • 1,2,3,5

Explanation

Question 15 of 18

1

A gas turbine operatos on the:

Select one of the following:

  • otto cycle

  • Daltons law

  • brayton cycle

  • Charles law

  • diesel

Explanation

Question 16 of 18

1

Remote gas turbines may be started by:
1. mechanical linkages
2. telephone
3. radio link
4. tiber relays

Select one of the following:

  • 2,3

  • 1,2

  • 3,4

  • 1,4

  • 2,4

Explanation

Question 17 of 18

1

In a total energy arrangement a gas turbine may exhaust its flue gas to
1.HRSG
2. waste heat boiler
3. atmosphere
4. SAGD

Select one of the following:

  • 1,2

  • 1,3

  • 2,4

  • 1,4

  • 1,2,4

Explanation

Question 18 of 18

1

A gas turbine may be used as a prime mover to operate:

Select one of the following:

  • air compressors

  • fire pumps

  • generators

  • emergency equipment

  • all of the above

Explanation

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