In gas turbines, high thermal efficiency is obtained in
A). Closed cycle
B). Open cycle
C). Both of the above
D). Closed/open depending on other considerations
The compressor capacity with decrease in suction temperature
A). Increases
B). Decreases
C). Remain unaffected
D). May increase or decrease depending on compressor capacity
A gas turbine used in air craft should have
A). High h.p. and low weight
B). Low weight and small frontal area
C). Small frontal area and high h.p.
D). High speed and high h.p.
Pick up the correct statement
A). Gas turbine uses low air-fuel ratio to economise on fuel
B). Gas turbine uses high air-fuel ratio to reduce outgoing temperature
C). Gas turbine uses low air-fuel ratio to develop the high thrust required
D). All of the above
Pick up the correct statement
A). Large gas turbines use radial inflow turbines
B). Gas turbines have their blades similar to steam turbine
C). Gas turbine's blade will appear as impulse section at the hub and as a reaction section at tip
D). Gas turbines use both air and liquid cooling