Get App on

Play Store

Mechanical Engineering Mcqs

Volumetric efficiency is_____________________?

  • (A)  the ratio of stroke volume to clearance volume
  • (B)  the ratio of the air actually delivered to the amount of piston displacement
  • (C)  reciprocal of compression ratio
  • (D)  index of compressor performance
  • (E)  proportional to compression ratio
Submitted By :Ali Uppal

Volumetric efficiency of a compressor without clearance volume________________?

  • (A)  increases with increase in compression ratio
  • (B)  decreases with increase in compression ratio
  • (C)  is not dependent upon compressin ratio
  • (D)  may increase/decrease depending on compressor capacity
  • (E)  unpredictable
Submitted By :Ali Uppal

Volumetric efficiency of air compressors is of the order of________________?

  • (A)  20-30%
  • (B)  40-50%
  • (C)  60-70%
  • (D)  70-90%
  • (E)  90-100%
Submitted By :Ali Uppal

Cylinder clearance in a compressor should be _________________?

  • (A)  as large as possible
  • (B)  as small as possible
  • (C)  about 50% of swept volume
  • (D)  about 100% of swept volume
  • (E)  none of the above
Submitted By :Ali Uppal

Ratio of indicated H.P. and brake H.P. is known as_________________?

  • (A)  mechanical efficiency
  • (B)  volumetric efficiency
  • (C)  isothermal efficiency
  • (D)  adiabatic efficiency
  • (E)  relative efficiency
Submitted By :Ali Uppal

Aeroplanes employ following type of compressor_______________?

  • (A)  radial flow
  • (B)  axial flow
  • (C)  centrifugal
  • (D)  combination of above
  • (E)  none of the above
Submitted By :Ali Uppal

Compression efficiency is compared against_____________________?

  • (A)  ideal compression
  • (B)  adiabatic compression
  • (C)  botii isothermal and adiabatic compression
  • (D)  isentropic compression
  • (E)  isothermal compression
Submitted By :Ali Uppal

An ideal air compressor cycle with clearance on p-v diagram can be represented by following processes_______________?

  • (A)  one adiabatic, two isobaric, and one constant volume
  • (B)  two adiabatic and two isobaric
  • (C)  two adiabatic, one isobaric and one constant volume,
  • (D)  one adiabatic, one isobaric and two constant volume
  • (E)  two isobaric, two adiabatic and one constant volume
Submitted By :Ali Uppal

Submitted By :Ali Uppal

Which is false statement about air receivers ___________________?

  • (A)  These are used to dampen pulsations ,
  • (B)  These act as reservoir to- take care of sudden demands
  • (C)  These increase compressor efficiency
  • (D)  These knock out some oil and moisture
  • (E)  These reduce frequent on/off operation of compressors
Submitted By :Ali Uppal

Submit Your Mcqs


Mcqs Home Categories


Management Sciences


Engineering Subjects


Medical Subjects


LIKE US ON