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ME Set-1
Compressors Gas dynamics and Gas Turbines
47

Compressors Gas dynamics and Gas Turbines MCQ with Answers

47) The type of rotary compressor used in aeroplanes, is of

centrifugal type

axial flow type

radial flow type

none of these

Answer is:

axial flow type

Compressors Gas dynamics and Gas Turbines MCQ with Answers

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Related Compressors Gas dynamics and Gas Turbines MCQ with Answers

48) An axial compressor gives optimum performance at high speeds and large volume flows.

Agree

Disagree

Answer is:

Agree

49) In a reciprocating air compressor, the compression work per kg of air

increases as clearance volume increases

decreases as clearance volume increases

is independent of clearance volume

increases as clearance volume decreases

Answer is:

is independent of clearance volume

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

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

Compressors Gas dynamics and Gas Turbines MCQ with Answers

For more MCQ's Click Here

47) The type of rotary compressor used in aeroplanes, is of

axial flow type

Compressors Gas dynamics and Gas Turbines MCQ with Answers

Related Compressors Gas dynamics and Gas Turbines MCQ with Answers

48) An axial compressor gives optimum performance at high speeds and large volume flows.

Agree

49) In a reciprocating air compressor, the compression work per kg of air

is independent of clearance volume

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

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

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