Engineering Mechanics | Mechanical Engineering

A block of mass m1, placed on an inclined smooth plane is connected by a light string passing over a smooth pulley to mass m2, which moves vertically downwards as shown in the below figure. The tension in the string is

Byadmin September 14, 2022

Question: A block of mass m1, placed on an inclined smooth plane is connected by a light string passing over a smooth pulley to mass m2, which moves vertically downwards as shown in the below figure. The tension in the string is
[A].

m1/m2

[B].

m1.g sin α

[C].

m1.m2/m1+m2

[D].

Answer: Option D

Explanation:

No answer description available for this question.

Hydraulics and Fluid Mechanics | Mechanical Engineering

A flow through an expanding tube at constant rate is called

Question: A flow through an expanding tube 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 B

Explanation:

No answer description available for this question.

Read More A flow through an expanding tube at constant rate is called
Mechanical Engineering | Production Engineering

A dynamometer is a device used for the measurement of

Question: A dynamometer is a device used for the measurement of
[A].

chip thickness ratio
[B].
forces during metal cutting
[C].
wear of the cutting tool
[D].
deflection of the cutting tool

Answer: Option B

Explanation:

No answer description available for this question.

Read More A dynamometer is a device used for the measurement of
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

A heat pump working on a reversed Carnot cycle has a C.O.P. of 5. It works as a refrigerator taking 1 kW of work input. The refrigerating effect will be

Question: A heat pump working on a reversed Carnot cycle has a C.O.P. of 5. It works as a refrigerator taking 1 kW of work input. The refrigerating effect will be
[A].

1 kW
[B].
2 kW
[C].
3 kW
[D].
4 kW

Answer: Option D

Explanation:

No answer description available for this question.

Read More A heat pump working on a reversed Carnot cycle has a C.O.P. of 5. It works as a refrigerator taking 1 kW of work input. The refrigerating effect will be
Ic Engines And Nuclear Power Plants | Mechanical Engineering

A fuel of an octane number rating of 75 matches in knocking intensity as a mixture of

Question: A fuel of an octane number rating of 75 matches in knocking intensity as a mixture of
[A].

75% iso-octane and 25% normal heptane
[B].
75% normal heptane and 25% iso-octane
[C].
75% petrol and 25% diesel
[D].
75% diesel and 25% petrol

Answer: Option A

Explanation:

No answer description available for this question.

Read More A fuel of an octane number rating of 75 matches in knocking intensity as a mixture of
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

For air conditioning the operation theatre in a hospital, the percentage of outside air in the air supplied is

Question: For air conditioning the operation theatre in a hospital, the percentage of outside air in the air supplied is
[A].

zero
[B].
20
[C].
50
[D].
100

Answer: Option D

Explanation:

No answer description available for this question.

Read More For air conditioning the operation theatre in a hospital, the percentage of outside air in the air supplied is
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

In a psychrometric process, the sensible heat added is 30 kJ/s and the latent heat added is 20 kJ/s. The sensible heat factor for the process will be

Question: In a psychrometric process, the sensible heat added is 30 kJ/s and the latent heat added is 20 kJ/s. The sensible heat factor for the process will be
[A].

0.3
[B].
0.6
[C].
0.67
[D].
1.5

Answer: Option B

Explanation:

No answer description available for this question.

Read More In a psychrometric process, the sensible heat added is 30 kJ/s and the latent heat added is 20 kJ/s. The sensible heat factor for the process will be

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