Steam and Gas Turbines Multiple Choice Questions on “Introduction”.
1. Gas turbines burn fuel to run their turbines.
a) True
b) False
Answer: a
Clarification: Gas turbines have combustors where fuels are burned and the exhaust at high pressure is used to run the turbine.
2. Gas turbine is also called as _______________
a) Velocity turbine
b) Steam turbine
c) Combustion turbine
d) None of the mentioned
Answer: c
Clarification: In gas turbines fuel is combusted in combustor and hence it is also called as combustion turbines.
3. In gas turbine upstream compressor is connected to downstream turbine.
a) True
b) False
Answer: a
Clarification: In gas turbines both compressor and turbine are connected by same shaft.
4. Gas turbine is a type of ___________ combustion engine.
a) depends
b) external
c) internal
d) none of the mentioned
Answer: c
Clarification: In gas turbine combustion takes place inside the engine and hence it is also a type of internal combustion engines.
5. _________ gas turbines are called as Auxiliary power units.
a) Smaller
b) Larger
c) Medium
d) None of the mentioned
Answer: a
Clarification: Smaller gas turbines are called as auxiliary power units.
6. Auxiliary power units are used to supply __________ air for air conditioning and ventilation.
a) low pressure
b) high pressure
c) medium pressure
d) none of the mentioned
Answer: b
Clarification: APUs supply compressed air for air conditioning. High pressure air is also called as compressed air.
7. All modern helicopters are powered by _________ engines.
a) Turbo shaft
b) Turbo jet
c) Turbo prop
d) None of the mentioned
Answer: a
Clarification: Turbo shaft engines are used to power trains, helicopters, etc.
8. Micro turbines are used to power _________
a) None of the mentioned
b) Air crafts
c) Ships
d) Hybrid vehicles
Answer: d
Clarification: Micro turbines are used to power hybrid vehicles whereas air crafts are powered by turbofans, turbojets, etc.
9. Micro turbines are also known as ___________
a) Turbo alternators
b) Turbo generators
c) Turbo alternators & generators
d) None of the mentioned
Answer: c
Clarification: Micro turbines are also called as turbo alternators.
10. Micro turbines are also called as ____________
a) Turbo alternators
b) Turbo alternators & generators
c) Turbo generators
d) None of the mentioned
Answer: b
Clarification: Micro turbines are also called as turbo generators.