QuizMaster

Question: A receiver in compressor installations is used to damp pressure waves in compressor discharge.
[A].

Yes

[B].

No

Answer: Option A

Explanation:

No answer description available for this question.

Question: 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 intercooling is given by
[A].

D1/D2 = (p1p3)1/2

[B].

D1/D2 = (p1/p3)1/4

[C].

D1/D2 = (p1p3)1/4

[D].

D1/D2 = (p3/p1)1/4

Answer: Option D

Explanation:

No answer description available for this question.

Question: If p1, is the pressure of air entering the L.P. cylinder and p2 is the pressure of air leaving the L.P. cylinder (or intercooler pressure), then the ratio of cylinder diameters for a single acting, two stage reciprocating air compressor with complete intercooling is given by (where D1 = Dia. of L.P. cylinder, and D2 = Dia. of H.P. cylinder)
[A].

D1/D2 = p1p2

[B].

D1/D2 = p1/p2

[C].

D1/D2 = p2/p1

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: For minimum work in multi-stage compression, the workdone on all stages should be equal.
[A].

Yes

[B].

No

Answer: Option A

Explanation:

No answer description available for this question.

Question: Maximum work is saved in a two stage reciprocating air compressor with incomplete intercooling.
[A].

Agree

[B].

Disagree

Answer: Option B

Explanation:

No answer description available for this question.

Question: Intercooling in multi-stage compressors is done
[A].

to cool the air during compression

[B].

to cool the air at delivery

[C].

to enable compression in two stages

[D].

to minimise the work of compression

Answer: Option D

Explanation:

No answer description available for this question.

Question: In a two stage reciprocating compressor with intercooler, the amount of work saved with incomplete intercooling is __________ that in case of complete intercooling.
[A].

less than

[B].

more than

Answer: Option A

Explanation:

No answer description available for this question.

Question: The assumption made in two stage compression with intercooler is that
[A].

there is no pressure drop in the intercooler

[B].

the compression in both the cylinders is polytropic

[C].

the suction and delivery of air takes place at constant pressure

[D].

all of the above

Answer: Option D

Explanation:

No answer description available for this question.

Question: 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.

Question: Intercooling in compressors results in saving of power in compressing given volume of air to a given pressure.
[A].

Correct

[B].

Incorrect

Answer: Option A

Explanation:

No answer description available for this question.