Which of the following refrigerant has the maximum ozone depletion potential in the stratophere?

Byadmin September 14, 2022

Question: Which of the following refrigerant has the maximum ozone depletion potential in the stratophere?
[A].

Ammonia

[B].

Carbon dioxide

[C].

Sulphur dioxide

[D].

Flourine

Answer: Option D

Explanation:

No answer description available for this question.

Engineering Mechanics | Mechanical Engineering

If the body falls freely under gravity, then the gravitational acceleration is taken as

Question: If the body falls freely under gravity, then the gravitational acceleration is taken as
[A].

+8.9 m/s2
[B].
-8.9 m/s2
[C].
+9.8 m/s2
[D].
-9.8 m/s2

Answer: Option C

Explanation:

No answer description available for this question.

Read More If the body falls freely under gravity, then the gravitational acceleration is taken as
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

A heat exchanger with heat transfer surface area A and overall heat transfer coefficient U handles two fluids of heat capacities Cmax and Cmin. The number of transfer units (NTU) used in the analysis of heat exchanger is specified as

Question: A heat exchanger with heat transfer surface area A and overall heat transfer coefficient U handles two fluids of heat capacities Cmax and Cmin. The number of transfer units (NTU) used in the analysis of heat exchanger is specified as
[A].

[B].

[C].
AU Cmin
[D].

Answer: Option D

Explanation:

No answer description available for this question.

Read More A heat exchanger with heat transfer surface area A and overall heat transfer coefficient U handles two fluids of heat capacities Cmax and Cmin. The number of transfer units (NTU) used in the analysis of heat exchanger is specified as
CHEMICAL ENGINEERING | Heat Transfer

A composite wall consists of two plates A and B placed in series normal to the flow of heat. The thermal conductivities are kA and kB and the specific heat capacities are CPA and CPB for plates A and B respectively. Plate B has twice the thickness of plate A. At steady state, the temperature difference across plate A is greater than that across plate B, when

Question: A composite wall consists of two plates A and B placed in series normal to the flow of heat. The thermal conductivities are kA and kB and the specific heat capacities are CPA and CPB for plates A and B respectively. Plate B has twice the thickness of plate A. At steady state, the temperature difference across plate A is greater than that across plate B, when
[A].

CPA > CPB
[B].
CPA < CPB
[C].
kA < 0.5kB
[D].
kA>2 kB

Answer: Option C

Explanation:

No answer description available for this question.

Read More A composite wall consists of two plates A and B placed in series normal to the flow of heat. The thermal conductivities are kA and kB and the specific heat capacities are CPA and CPB for plates A and B respectively. Plate B has twice the thickness of plate A. At steady state, the temperature difference across plate A is greater than that across plate B, when
CHEMICAL ENGINEERING | Heat Transfer

Film boiling is usually not desired in commercial equipments, because

Question: Film boiling is usually not desired in commercial equipments, because
[A].

the heat transfer rate is low in view of the large temperature drop.
[B].
it is difficult to maintain.
[C].
it is not economic.
[D].
none of these.

Answer: Option A

Explanation:

No answer description available for this question.

Read More Film boiling is usually not desired in commercial equipments, because
CHEMICAL ENGINEERING | Heat Transfer

Crystallisation of solids from a homogeneous solution is a/an __________ process.

Question: Crystallisation of solids from a homogeneous solution is a/an __________ process.
[A].

exothermic
[B].
mildly endothermic
[C].
highly endothermic
[D].
none of these

Answer: Option A

Explanation:

No answer description available for this question.

Read More Crystallisation of solids from a homogeneous solution is a/an __________ process.
Automobile Engineering | Mechanical Engineering

During braking, the brake shoe is moved outward to force the lining against the

Question: During braking, the brake shoe is moved outward to force the lining against the
[A].

wheel piston or cylinder
[B].
anchor pin
[C].
brake drum
[D].
wheel rim or axle

Answer: Option C

Explanation:

No answer description available for this question.

Read More During braking, the brake shoe is moved outward to force the lining against the

Similar Posts