Mechanical Engineering Questions And Answers :: Compressors: part1

Mechanical Engineering : Compressors QUESTIONS AND ANSWERS :: part1 : 6 to 10

Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2014 and IES 2014 examinations :

6.The- most efficient method of compressing air is to compress it

as per law pV

7.Ratio of indicated H.P. and brake H.P. is known as

mechanical efficiency
volumetric efficiency
isothermal efficiency
adiabatic efficiency
relative efficiency.

8.An ideal air compressor cycle with clearance on p-v diagram can be represented by following processes

one adiabatic, two isobaric, and one constant volume
two adiabatic and two isobaric
two adiabatic, one isobaric and one constant volume,
one adiabatic, one isobaric and two constant volume
two isobaric, two adiabatic and one constant volume.

9.The overall isothermal eiffciency of compressor is defined as the ratio of

isothermal h.p. to the BHP of motor
isothermal h.p. to adiabatic h.p.
power to drive compressor to isothermal h.p.
work to compress air isothermally to work for actual compression
isothermal work to ideal work.

10.Compression efficiency is compared against

ideal compression
adiabatic compression
botii isothermal and adiabatic compression
isentropic compression
isothermal compression.

More Compressors QUESTIONS AND ANSWERS available in next pages

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