Question: For perfect intercooling in a two stage compressor,
[A].p1 = p3
p1 = p2p3
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
Mechanical Engineering
For minimum work required to compress and deliver a quantity of air by multi-stage compression,
Question: For minimum work required to compress and deliver a quantity of air by multi-stage compression,
[A].the compression ratio in each stage should be same
the intercooling should be perfect
the workdone in each stage should be same
all of the above
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
In a high pressure compressor, the delivery pressure is
Question: In a high pressure compressor, the delivery pressure is
[A].1 to 5 bar
5 to 8 bar
8 to 10 bar
10 to 15 bar
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
A compressor at high altitudes will require __________ power.
Question: A compressor at high altitudes will require __________ power.
[A].same
less
more
[A].
[B].
[C].
Answer: Option B
Explanation:
No answer description available for this question.
An aftercooler is used to
Question: An aftercooler is used to
[A].remove impurities from air
reduce volume of air
cause moisture and oil vapour to drop out
cool the air
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
A receiver in compressor installations is used to damp pressure waves in compressor discharge.
Question: A receiver in compressor installations is used to damp pressure waves in compressor discharge.
[A].Yes
No
[A].
[B].
Answer: Option A
Explanation:
No answer description available for this 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
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
D1/D2 = (p1/p3)1/4
D1/D2 = (p1p3)1/4
D1/D2 = (p3/p1)1/4
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this 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)
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
D1/D2 = p1/p2
D1/D2 = p2/p1
none of these
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
For minimum work in multi-stage compression, the workdone on all stages should be equal.
Question: For minimum work in multi-stage compression, the workdone on all stages should be equal.
[A].Yes
No
[A].
[B].
Answer: Option A
Explanation:
No answer description available for this question.
Maximum work is saved in a two stage reciprocating air compressor with incomplete intercooling.
Question: Maximum work is saved in a two stage reciprocating air compressor with incomplete intercooling.
[A].Agree
Disagree
[A].
[B].
Answer: Option B
Explanation:
No answer description available for this question.