| 1. | The volume of air sucked by the compressor during its suction stroke is called ? | |
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free air delivery
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compressor capacity
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swept volume
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none of these
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Report Question| 2. | A turbo-prop is preferred to turbo-jet because ? | |
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it has high propulsive efficiency at high speeds
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it can fly at super sonic speeds
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it can fly at high elevations
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it has high power for take off
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| 3. | The maximum temperature in a gas turbine is ? | |
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200°C
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500° C
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700° C
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1000° C
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| 4. | Standard air is the air at .............and relative humidity of 36 percent ? | |
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0.1 bar and 20° C
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1 bar and 20° C
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0.1 bar and 40° C
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1 bar and 40° C
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| 5. | A rocket engine uses ........ for the combustion of its fuel ? | |
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surrounding air
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compressed atmospheric air
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its own oxygen
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none of these
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| 6. | The negative displacement compressor is ? | |
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roots blower compressor
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vane blower compressor
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centrifugal blower compressor
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both b and c
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| 7. | In axial flow compressor, exit flow angle deviation from the blade angle is a function of ? | |
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blade camber
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blade camber and incidence angle
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space-chord ratio
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blade camber and space-chord ratio
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| 8. | A machine used to raise the pressure of air is called ? | |
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gas turbine
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I.C. engine
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compressor
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air motor
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| 9. | Which of the following statement is wrong ? | |
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In a two stage reciprocating air compressor with complete intercooling, maximum work is saved
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The minimum work required for a two stage reciprocating air compressor is double the work required for each stage
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The ratio of the volume of free air delivery per stroke to the swept volume of the piston is called volumetric efficiency
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none of the above
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| 10. | In a single stage, single acting reciprocating air compressor, without clearance volume, the workdone is minimum during ? | |
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isothermal compression
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isentropic compression
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polytropic compression
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none of these
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