1000+ Mechanical Engineering Turbomachines Quiz Questions and Answers - 1

Question: 1

For efficient operation of axial flow compressors and blades are made

(A) aerofoil section

(B) forward curved

(C) slightly curved

(D) straight

Ans: A

aerofoil section

Question: 2

An axial flow compressor has

(A) identical blades at exit as well as entry

(B) smaller blades at gas entry and larger blades at exit

(C) larger blades at gas entry and smaller blades at exit

(D) size of blades remains same only angles changes

Ans: C

larger blades at gas entry and smaller blades at exit

Question: 3

Efficiency of gas turbine is increased by

(A) adding a regenerator

(B) intercooling

(C) reheating

(D) all of the above

Ans: D

all of the above

Question: 4

The ratio of actual velocity to the local velocity of sound is called

(A) mach number

(B) speed ratio

(C) velocity factor

(D) velocity ratio

Ans: A

mach number

Question: 5

Which of the following are positive displacement rotary compressor?

(A) axial flow compressor

(B) centrifugal compressor

(C) roots blower

(D) all of the above

Ans: C

roots blower

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