TRAVIS CANNING
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power engineering 3b2 Quiz on Power prep quiz 9, created by TRAVIS CANNING on 28/02/2016.

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TRAVIS CANNING
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Power prep quiz 9

Power prep quiz 9

Question 1 of 12

1

An essential auxillary in a gas turbine system is

Select one of the following:

  • regenerator

  • starting motor

  • intercooler

  • waste heat boiler

  • combustor

Explanation

Question 2 of 12

1

A gas turbine is started in the following sequence of operation
1. air is heated in the combustor
2. air is drawn into the compressor
3. exhaust gases expand through the turbine
4. air is exhausted to atmosphere or hrsg

Select one of the following:

  • 1,2,3,4

  • 2,1,3,4

  • 4,2,3,1

  • 2,4,1,3

  • 3,1,2,4

Explanation

Question 3 of 12

1

Air choking in the high pressure end of the compressor is also termed:

Select one of the following:

  • sputtering

  • back-firing

  • choking

  • surging

  • dead-heading

Explanation

Question 4 of 12

1

When starting a gas turbine in manual mode, what would be the first step

Select one of the following:

  • start the starting motor

  • engage the ignitors

  • load the power turbine

  • engage the turning gear

  • start the auxillary systems

Explanation

Question 5 of 12

1

Water washing and adding chemicals to fuels that contain sodium or vanadium is primarily for

Select one of the following:

  • reducing deposits on turbine blades

  • reduce blade erosion

  • lower exhaust gas temperatures

  • reduce turbine blade erosion

  • lower NOX emmisions

Explanation

Question 6 of 12

1

Major overhauls are performed on a gas turbine:

Select one of the following:

  • annualy

  • when performance is poor

  • monthly

  • according to the manufacturers specifications

  • during off-peak hours

Explanation

Question 7 of 12

1

Which of the following components will reduce noise pollution from a gas turbine system:
1. inlet silencers
2. exhaust silencers
3. acoustic insulation
3. using axial air compressors

Select one of the following:

  • 1,2

  • 2,3,4

  • 1,2,4

  • 1,2,3

  • 1,2,3,4

Explanation

Question 8 of 12

1

Which interlocks need to be in the start position to start a gas turbine
1. oil pressure normal
2. dampers and ducting open
3. controls circuits energized
4. governer in start position

Select one of the following:

  • 1,2

  • 2,3,4

  • 1,2,4

  • 1,2,3

  • 1,2,3,4

Explanation

Question 9 of 12

1

Minor servicing carried out on a gas turbine:

Select one of the following:

  • is done monthly

  • is done annualy

  • may only allow some adjusting to the combustor unit

  • will include power turbine blade replacement

  • will include compressor balancing and mechanical maintenance

Explanation

Question 10 of 12

1

when inspecting the flame tube of a gas turbine during a turnaround the operator should check for

Select one of the following:

  • distortion

  • proper ignition

  • air flow restrictions

  • scaling

  • corrosion salts

Explanation

Question 11 of 12

1

combustion unit inspections and maintenance includes
1. cleaning
2. ignition checks
3. adjusting fuel flows
4. igniters and retraction gear tested

Select one of the following:

  • 1,2

  • 2,3,4

  • 1,2,4

  • 1,2,3

  • 1,2,3,4

Explanation

Question 12 of 12

1

The lubrication system on a gas turbine for be checked for:
1. leaks
2. water
3. dirt
4. metal particles

Select one of the following:

  • 1,2

  • 2,3,4

  • 1,2,4

  • 1,2,3

  • 1,2,3,4

Explanation

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