| 1. | If the flow of air through the compressor is perpendicular to its ? | |
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reciprocating compressor
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centrifugal compressor
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axial flow compressor
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turbo compres
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Report Question| 2. | In an axial flow compressor, the ratio of pressure in the rotor blades to the pressure rise in the compressor in one stage is known as ? | |
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work factor
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slip factor
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degree of reaction
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pressure coefficient
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| 3. | Separators are generally used in air compressor installations ? | |
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before the intercooler
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after the intercooler
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between the aftercooler and receiver
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before first stage suction
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| 4. | The ratio of work done per cycle to the stroke volume of the compressor is known as ? | |
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compressor capacity
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compression ratio
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compressor efficiency
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mean effective pressure
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| 5. | The stagnation pressure rise in a centrifugal compressor takes place ? | |
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in the diffuser only
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in the impeller only
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in the diffuser and impeller
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in the inlet guide vanes only
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| 6. | When air is to be compressed at a high pressure, then it is advantageous to use ? | |
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single stage compression
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multi-stage compression without intercooling
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multi-stage compression with intercooling
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none of these
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| 7. | Which of the following statement is correct ? | |
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The reciprocating compressors are best suited for high pressure and low volume capacity
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The effect of clearance volume on power consumption is negligible for the same volume of discharge
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both (a) and (b)
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none of these
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| 8. | The compression ratio in a gas turbine is ? | |
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4
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7
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9
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12
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| 9. | In a single acting reciprocating compressor, the suction, compression and delivery of air takes place in ........of the piston ? | |
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one stroke
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two strokes
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three strokes
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four strokes
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| 10. | In a high pressure compressor, the delivery pressure is ? | |
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1 to 5 bar
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5 to 8 bar
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8 to 10 bar
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10 to 15 bar
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