A. one air stream
B. two or more air streams
C. no air stream
D. solid fuel firing
E. rocket principle for its operation
Turbofan engine employs ____________________ ? Read More »
Compressors, Gas Turbines and Jet Engines A. using mulit-stage compressor with mfercooler
B. adding heat exchanger
C. injecting water in/around combustion chamber
D. reheating the air after partial expansion in the turbine
E. all of the above
A. speed
B. speed
C. altitude
D. Vspeed
E. does not Vary
The compression ratio in a jet engine varies proportional to ____________________? Read More »
Compressors, Gas Turbines and Jet Engines A. turbo-jet engine
B. ram-jet engine
C. propellers
D. rockets
E. hydraulic jet propulsion
For speed above 3000 km/hour, it is more advantageous to use____________________? Read More »
Compressors, Gas Turbines and Jet Engines A. higher at ground
B. higher at high altitudes
C. same at all altitudes
D. higher at high speed
E. lower at low speed
The efficiency of jet engine is__________________? Read More »
Compressors, Gas Turbines and Jet Engines A. gases
B. solids
C. liquid
D. plasma
E. highly heated atmospheric air
In air breathing jet engine, the jet is formed by expanding__________________? Read More »
Compressors, Gas Turbines and Jet Engines A. 2500°C
B. 2000°C
C. 1500°C
D. 1000°C
E. 700°C
A. high thermal efficiency
B. reduction in compressor work
C. decrease of heat loss in exhaust
D. maximum work output
E. none of the above
Reheating in multistage expansion gas turbine results in____________________? Read More »
Compressors, Gas Turbines and Jet Engines A. increases thermal efficiency
B. allows high compression ratio
C. decreases heat loss is exhaust
D. allows operation at very high altitudes
E. permits high moisture content fuel to be used
Gas turbine cycle with Regenerator __________________? Read More »
Compressors, Gas Turbines and Jet Engines A. increase temperature
B. reduce turbine size
C. increase power output
D. increase speed
E. increase pressure ratio
The main purpose of reheating in gas turbine is to__________________? Read More »
Compressors, Gas Turbines and Jet Engines