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ME Set-1
Compressors Gas dynamics and Gas Turbines
50

Compressors Gas dynamics and Gas Turbines MCQ with Answers

50) The degree of reaction in an axial flow compressor is defined as the ratio of static enthalpy rise in the

rotor to static enthalpy rise in the stator

stator to static enthalpy rise in the rotor

rotor to static enthalpy rise in the stage

stator to static enthalpy rise in the stage

Answer is:

rotor to static enthalpy rise in the stage

Compressors Gas dynamics and Gas Turbines MCQ with Answers

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Related Compressors Gas dynamics and Gas Turbines MCQ with Answers

51) If p₁ is the pressure of air entering the L.P, cylinder and p₃ is the pressure of air leaving the H.P. cylinder, then the ratio of cylinder diameters for a single acting, two stage reciprocating compressor with complete

D₁/D₂ = (p₁p₃)^1/2

D₁/D₂ = (p₁/p₃)^1/4

D₁/D₂ = (p₁p₃)^1/4

D₁/D₂ = (p₃/p₁)^1/4

Answer is:

D₁/D₂ = (p₃/p₁)^1/4

52) Reheating in a gas turbine

increases the thermal efficiency

increases the compressor work

increases the turbine work

decreases the thermal efficiency

Answer is:

increases the thermal efficiency

53) In a single stage, single acting reciprocating air compressor, without clearance, the workdone on the air during isentropic compression is __________ the heat required to raise the temperature of air from T₁ to T₂ at a c

equal to

less than

greater than

none of these

Answer is:

equal to

54) Workdone by an air compressor __________ upon the way in which the air is compressed.

depends

does not depend

not related

none of these

Answer is:

depends

Compressors Gas dynamics and Gas Turbines MCQ with Answers

For more MCQ's Click Here

50) The degree of reaction in an axial flow compressor is defined as the ratio of static enthalpy rise in the

rotor to static enthalpy rise in the stage

Compressors Gas dynamics and Gas Turbines MCQ with Answers

Related Compressors Gas dynamics and Gas Turbines MCQ with Answers

51) If p1 is the pressure of air entering the L.P, cylinder and p3 is the pressure of air leaving the H.P. cylinder, then the ratio of cylinder diameters for a single acting, two stage reciprocating compressor with complete

D1/D2 = (p3/p1)1/4

52) Reheating in a gas turbine

increases the thermal efficiency

53) In a single stage, single acting reciprocating air compressor, without clearance, the workdone on the air during isentropic compression is __________ the heat required to raise the temperature of air from T1 to T2 at a c

equal to

54) Workdone by an air compressor __________ upon the way in which the air is compressed.

depends

Compressors Gas dynamics and Gas Turbines MCQ with Answers

51) If p₁ is the pressure of air entering the L.P, cylinder and p₃ is the pressure of air leaving the H.P. cylinder, then the ratio of cylinder diameters for a single acting, two stage reciprocating compressor with complete

D₁/D₂ = (p₃/p₁)^1/4

53) In a single stage, single acting reciprocating air compressor, without clearance, the workdone on the air during isentropic compression is __________ the heat required to raise the temperature of air from T₁ to T₂ at a c