The mean effective pressure of the compressor is the
A). Actual volume of the air delivered by the compressor when reduced to normal temperature and pressure conditions
B). Volume of air delivered by the compressor
C). Volume of air sucked by the compressor during its suction stroke
D). None of the above
The effective power of gas turbines is increased by adding the following in compressor
A). Ammonia and water vapour
B). Carbon dioxide
C). Nitrogen
D). Hydrogen
During base load operation, the best method of controlling compressor is
A). Start-stop motor
B). Constant speed unloader
C). Relief valve
D). Variable speed
A closed cycle gas turbine consists of a
A). Compressor
B). Heating chamber
C). Cooling chamber
D). All of these
The thermal efficiency of a simple gas turbine for a given turbine inlet temperature with increase in pressure ratio
A). Increases
B). Decreases
C). First increases and then decreases
D). First decreases and then increases