The efficiency and work ratio of a gas turbine plant can be increased by _____________________? 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…
The compression ratio in a jet engine varies proportional to ____________________? A. speedB. speed C. altitude D. Vspeed E. does not Vary
For speed above 3000 km/hour, it is more advantageous to use____________________? A. turbo-jet engineB. ram-jet engine C. propellers D. rockets E. hydraulic jet propulsion
The efficiency of jet engine is__________________? A. higher at groundB. higher at high altitudes C. same at all altitudes D. higher at high speed E. lower at low speed
In air breathing jet engine, the jet is formed by expanding__________________? A. gases B. solids C. liquid D. plasmaE. highly heated atmospheric air
Maximum temprature in a gas turbine is of the order of COMPRESSORS, GAS TURBINES AND JET ENGINES______________________? A. 2500°C B. 2000°C C. 1500°C D. 1000°CE. 700°C
Reheating in multistage expansion gas turbine results in____________________? A. high thermal efficiency B. reduction in compressor work C. decrease of heat loss in exhaustD. maximum work output E. none of the above
Gas turbine cycle with Regenerator __________________? 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
The main purpose of reheating in gas turbine is to__________________? A. increase temperature B. reduce turbine sizeC. increase power output D. increase speed E. increase pressure ratio
Work ratio of a gas turbine plant is ratio of______________________? A. net work output and work done by turbine B. net work output and heat supplied C. work done by turbine and heat supplied D. work done by turbine and…