30) In a centrifugal compressor, an increase in speed at a given pressure ratio causes

increase in flow

decrease in flow

increase in efficiency

increase in flow and decrease in efficiency

Answer is:

increase in flow and decrease in efficiency

reduced volume flow rate

increased volume flow rate

lower suction pressure

lower delivery pressure

Answer is:

same

lower

higher

none of these

Answer is:

requires less space for installation

has compressor and combustion chamber

has less efficiency

all of these

Answer is:

Explanation:

Gas turbine as compared to steam turbine
* requires less space for installation
* has compressor and combustion chamber
* has less efficiency

decreases net output but increases thermal efficiency

increases net output but decreases thermal efficiency

decreases net output and thermal efficiency both

increases net output and thermal efficiency both

Answer is: