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Gas Turbine Exam Questions and Answers 100% Solved | Latest Update
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Gas Turbine Exam Questions and Answers 100% Solved | Latest Update The thermal efficiency of gas turbine is ________________. - 20 to 30 percent Major field of application of gas turbines - Aviation, Power generation, oil and gas industry and marine propulsion Is efficiency of gas turbine the...

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  • December 8, 2024
  • 10
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • Gas Turbine Mechanic
  • Gas Turbine Mechanic

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Gas Turbine Exam Questions and

Answers 100% Solved | Latest Update


The thermal efficiency of gas turbine is ________________. - ✔✔20 to 30

percent

Major field of application of gas turbines - ✔✔Aviation, Power generation,

oil and gas industry and marine propulsion

Is efficiency of gas turbine the criteria for the choice of the plant? - ✔✔No

Advantages of gas turbine - ✔✔self-contained unit; light weight; not require

cooling water;generally fit into overall shape of the structure

Disadvantages of gas turbine - ✔✔Not self-starting; low efficiencies at part

load; non-reversibility; higher rotor speed and low overall plant efficiency

Applications of gas turbine power plant (GTPP) - ✔✔To drive generator

and supply peak loads in other power plant

To work as combination plants with conventional steam boilers

To supply mechanical drive to auxiliaries

Advantages over diesel power plant - ✔✔more work developed per kg of

air; less vibration due to perfect balancing; less space requirements; low
1
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.

, cost (capital, installation and maintenance); higher mechanical η; better

torque characteristics; higher RPM (1 lacs to 40K); simpler ignition &

lubrication systems; poor quality fuel can be used; sfc doesn't increase

drastically with time;

disadvantages over diesel power plant - ✔✔low part load η; special metals

and alloys; special cooling methods; short life

advantages over steam power plants - ✔✔lower cost; no ash handling;

compact; fewer auxiliaries; built quicker; preferable to work as peak load

plant;

✔✔✔✔For same pressure and initial temperature conditions, the ratio of

exhaust to inlet volume would only be 3.95 in gas turbine power plant while

in case of steam power plant, it would be ______________. - ✔✔250

The site of the steam power plant is dictated by the availability of large

__________________________. - ✔✔cooling water

The open cycle GT can be located near the load center as

_____________________________________________. - ✔✔no cooling

water is required

The cooling water required for closed cycle GT is hardly ____________ %

of the steam power plant. - ✔✔10

2
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.

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