1000+ Turbomachines Objective Questions and Answers Pdf - 1

Question: 1

In air compressor performance curve, a surge line represents

(A) lower critical speed of shaft

(B) limit of stable operation

(C) limit of compressor efficiency

(D) limit of compressor discharge

Ans: B

limit of stable operation

Question: 2

A nozzle used to

(A) decrease velocity and increase pressure

(B) decrease velocity as well as pressure

(C) increase velocity as well as pressure

(D) increase velocity and decrease pressure

Ans: D

increase velocity and decrease pressure

Question: 3

Which of the following rotary compressor has two shafts?

(A) lobe type compressor

(B) sliding vane compressor

(C) centrifugal compressor

(D) axial flow compressor

Ans: A

lobe type compressor

Question: 4

Which type of rotary compressor is used in oil fired furnaces?

(A) axial flow compressor

(B) centrifugal blower

(C) screw compressor

(D) sliding vane type lower

Ans: B

centrifugal blower

Question: 5

Which component of a gas turbine consumes maximum power?

(A) combustion chamber

(B) compressor

(C) regenerator

(D) starter

Ans: B

compressor

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