If the condenser temperature is kept constant, the coefficient of performance of a refrigeration cycle increases with the increase in evaporator temperature.

Byadmin September 14, 2022

Question: If the condenser temperature is kept constant, the coefficient of performance of a refrigeration cycle increases with the increase in evaporator temperature.
[A].

Yes

[B].

Answer: Option A

Explanation:

No answer description available for this question.

Hydraulic Machines | Mechanical Engineering

By fitting an air vessel to the reciprocating pump, there is always a saving of work done and subsequently saving of power. This saving in case of a single acting reciprocating pump is

Question: By fitting an air vessel to the reciprocating pump, there is always a saving of work done and subsequently saving of power. This saving in case of a single acting reciprocating pump is
[A].

39.2%
[B].
48, 8%
[C].
84.8%
[D].
88.4%

Answer: Option C

Explanation:

No answer description available for this question.

Read More By fitting an air vessel to the reciprocating pump, there is always a saving of work done and subsequently saving of power. This saving in case of a single acting reciprocating pump is
Hydraulic Machines | Mechanical Engineering

A hydraulic intensifier is a device used to increase the intensity of pressure of water by means of energy available from a large quantity of water at a low pressure.

Question: A hydraulic intensifier is a device used to increase the intensity of pressure of water by means of energy available from a large quantity of water at a low pressure.
[A].

Correct
[B].
Incorrect

Answer: Option A

Explanation:

No answer description available for this question.

Read More A hydraulic intensifier is a device used to increase the intensity of pressure of water by means of energy available from a large quantity of water at a low pressure.
Hydraulic Machines | Mechanical Engineering

Discharge (Q) of a centrifugal pump is given by (where D = Diameter of impeller at inlet, b = Width of impeller at inlet, and Vf = Velocity of flow at inlet)

Question: Discharge (Q) of a centrifugal pump is given by (where D = Diameter of impeller at inlet, b = Width of impeller at inlet, and Vf = Velocity of flow at inlet)
[A].

Q = π.D.Vf
[B].
Q = π.b.Vf
[C].
Q = π.D.b.Vf
[D].
Q = D.b.Vf

Answer: Option C

Explanation:

No answer description available for this question.

Read More Discharge (Q) of a centrifugal pump is given by (where D = Diameter of impeller at inlet, b = Width of impeller at inlet, and Vf = Velocity of flow at inlet)
Industrial Engineering And Production Management | Mechanical Engineering

A device used for lifting or lowering objects suspended from a hook at the end of retractable chains or cable is called

Question: A device used for lifting or lowering objects suspended from a hook at the end of retractable chains or cable is called
[A].

hoist
[B].
jib crane
[C].
portable elevator
[D].
chain conveyor

Answer: Option A

Explanation:

No answer description available for this question.

Read More A device used for lifting or lowering objects suspended from a hook at the end of retractable chains or cable is called
Hydraulics and Fluid Mechanics | Mechanical Engineering

A flow through a long pipe at constant rate is called

Question: A flow through a long pipe at constant rate is called
[A].

steady uniform flow
[B].
steady non-uniform flow
[C].
unsteady uniform flow
[D].
unsteady non-uniform flow

Answer: Option A

Explanation:

No answer description available for this question.

Read More A flow through a long pipe at constant rate is called
Heat Transfer

When heat is transferred form hot body to cold body, in a straight line, without affecting the intervening medium, it is referred as heat transfer by __________________?

When heat is transferred form hot body to cold body, in a straight line, without affecting the intervening medium, it is referred as heat transfer by __________________?

A. conduction
B. convection
C. radiation
D. conduction and convection
E. convection and radiation

Read More When heat is transferred form hot body to cold body, in a straight line, without affecting the intervening medium, it is referred as heat transfer by __________________?

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