Compressors - Interview Questions | Exam2Win

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6. The degree of reaction of an axial flow turbine is the ratio of is entropic temperature drop in a blade row to the

A. adiabatic temperature drop in the stage

B. total temperature drop

C. total temperature drop in the stage

D. total adiabatic temperature drop

E. difference of maximum and minimum temperature in the cycle.

Explanation:

7. Temperature of gases at end of compression as compared to exhaust gases in a gas turbine is

A. higher

B. lower

C. equal

D. can't be compared

E. unpredictable.

Explanation:

8. A gas turbine used in air craft should have

A. high h.p. and low weight

B. low weight and small frontal area

C. small frontal area and high h.p.

D. high speed and high h.p.

E. all of the above.

Explanation:

9. The maximum combustion pressure in gas turbine as compared to I.C. engine is

A. more

B. less

C. same

D. depends on other factors

E. unpredictable.

Explanation:

10. For an irreversible gas turbine cycle, the efficiency and work ratio both depend on

A. pressure ratio alone

B. maximum cycle temperature alone

C. minimum cycle temperature alone

D. both pressure ratio and maximum cycle temperature

E. none of the above.

Explanation: