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Home Mechanical Engineering Compressors, Gas Dynamics and Gas Turbines Comments

  • Question
  • An axial compressor gives optimum performance at high speeds and large volume flows.


  • Options
  • A. Agree
  • B. Disagree

  • Correct Answer
  • Agree 


  • Compressors, Gas Dynamics and Gas Turbines problems


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    • 1. The capacity of a compressor is expressed in

    • Options
    • A. kg/m2
    • B. kg/m3
    • C. m3/min
    • D. m3/kg
    • Discuss
    • 2. The type of rotary compressor used in gas turbines, is of

    • Options
    • A. centrifugal type
    • B. axial flow type
    • C. radial flow type
    • D. none of these
    • Discuss
    • 3. Rotary compressors are used for delivering

    • Options
    • A. small quantities of air at high pressures
    • B. large quantities of air at high pressures
    • C. small quantities of air at low pressures
    • D. large quantities of air at low pressures
    • Discuss
    • 4. The actual volume of air delivered by a compressor, When reduced to the normal temperature and pressure conditions is called compressor capacity.

    • Options
    • A. Yes
    • B. No
    • Discuss
    • 5. Workdone by a two-stage reciprocating air compressor per cycle is equal to the workdone in LP. cylinder and H.P. cylinder.

    • Options
    • A. True
    • B. False
    • Discuss
    • 6. A large clearance Volume in a reciprocating compressor results in

    • Options
    • A. reduced volume flow rate
    • B. increased volume flow rate
    • C. lower suction pressure
    • D. lower delivery pressure
    • Discuss
    • 7. Intercooling in gas turbines

    • Options
    • A. decreases net output but increases thermal efficiency
    • B. increases net output but decreases thermal efficiency
    • C. decreases net output and thermal efficiency both
    • D. increases net output and thermal efficiency both
    • Discuss
    • 8. The rotary compressors are suitable for large discharge of air at low pressure.

    • Options
    • A. True
    • B. False
    • Discuss
    • 9. The ratio of the volume of free air delivery per stroke to the swept volume of the piston, is known as

    • Options
    • A. compressor efficiency
    • B. volumetric efficiency
    • C. isothermal efficiency
    • D. mechanical efficiency
    • Discuss
    • 10. The heat transfer by conduction through a thick sphere is given by

    • Options
    • A.
    • B.
    • C.
    • D.
    • Discuss


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