39) Which of the following statements is wrong ?

In a two-stage reciprocating air compressor with complete intercooling, maximum work is saved.

The minimum work required for a two-stage reciprocating air compressor is double the work required for each stage.

The ratio of the volume of free air delivery per stroke to the swept volume of the piston is called volumetric efficiency.

None of the above

Answer is:

None of the above

KPSC Water Resource Department Assistant Engineer Mechanical Question Paper 2017 with Answer Key

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Related KPSC Water Resource Department Assistant Engineer Mechanical Question Paper 2017 with Answer Key

40) Which one of the following is the effect of blade shape on the performance of a centrifugal compressor ?

Answer is:

Forward curved blades produce lower pressure ratio

41) Detonation is harmful as

increase in the rate of heat transfer causes a reduction in the power output and efficiency of the engine.

excessive turbulence removes most of the insulating gas boundary layer from the cylinder walls.

high intensity of knock causes crankshaft vibration and the engine runs rough.

None of the above

Answer is:

None of the above

42) A ball tied at the end of a flexible inelastic string of length 'l' is executing SHM in a vertical plane. At the mean position the mass has

Answer is:

Maximum KE and Minimum PE

43) In ABC analysis, the C items are those which represent

Answer is:

Small percentage of the total annual consumption value

Explanation:

In materials management, ABC analysis is an inventory categorization technique. ABC analysis divides an inventory into three categories—
"A items" with very tight control and accurate records,
"B items" with less tightly controlled and good records, and
"C items" with the simplest controls possible and minimal records.

In ABC analysis, the C items are those which represent

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