Compressors, Gas Dynamics and Gas Turbines - Section 1 (3)

Directions to Solve

Compressors, Gas Dynamics and Gas Turbines - Section 1

17.

Intercooling in gas turbines

A.	decreases net output but increases thermal efficiency
B.	increases net output but decreases thermal efficiency
C.	decreases net output and thermal efficiency both
D.	increases net output and thermal efficiency both

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

18.

Gas turbine as compared to steam turbine

A.	requires less space for installation
B.	has compressor and combustion chamber
C.	has less efficiency
D.	all of these

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

19.

A closed cycle gas turbine gives __________ efficiency as compared to an open cycle gas turbine.

A.	same
B.	lower
C.	higher

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

20.

A large clearance Volume in a reciprocating compressor results in

A.	reduced volume flow rate
B.	increased volume flow rate
C.	lower suction pressure
D.	lower delivery pressure

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

21.

In a centrifugal compressor, an increase in speed at a given pressure ratio causes

A.	increase in flow
B.	decrease in flow
C.	increase in efficiency
D.	increase in flow and decrease in efficiency

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

22.

A rotary compressor is driven by an

A.	electric motor
B.	engine
C.	either (a) or (b)
D.	none of these

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

23.

Workdone by a two-stage reciprocating air compressor per cycle is equal to the workdone in LP. cylinder and H.P. cylinder.

A.	True
B.	False

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

24.

Rotary compressors are used for delivering

A.	small quantities of air at high pressures
B.	large quantities of air at high pressures
C.	small quantities of air at low pressures
D.	large quantities of air at low pressures

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

1
2
3
4
5
6
7