A refrigerant with the highest critical pressure is

Byadmin September 14, 2022

Question: A refrigerant with the highest critical pressure is
[A].

R-11

[B].

R-12

[C].

R-22

[D].

Ammonia

Answer: Option D

Explanation:

No answer description available for this question.

Industrial Engineering And Production Management | Mechanical Engineering

Job evaluation is the method of determining the

Question: Job evaluation is the method of determining the
[A].

relative values of a job
[B].
worker’s performance on a job
[C].
worth of the machine
[D].
value of overall production

Answer: Option A

Explanation:

No answer description available for this question.

Read More Job evaluation is the method of determining the
CHEMICAL ENGINEERING | Heat Transfer

A metal ball of radius 0.1 m at a uniform temperature of 90°C is left in air at 30°C. The density and the specific heat of the metal are 3000 kg/m3 and 0.4 kJ/kg.K respectively. The heat transfer co-efficient is 50 W/m2.K Neglecting the temperature gradients inside the ball, the time taken (in hours) for the ball to cool to 60°C is

Question: A metal ball of radius 0.1 m at a uniform temperature of 90°C is left in air at 30°C. The density and the specific heat of the metal are 3000 kg/m3 and 0.4 kJ/kg.K respectively. The heat transfer co-efficient is 50 W/m2.K Neglecting the temperature gradients inside the ball, the time taken (in hours) for the ball to cool to 60°C is
[A].

555
[B].
55.5
[C].
0.55
[D].
0.15

Answer: Option D

Explanation:

No answer description available for this question.

Read More A metal ball of radius 0.1 m at a uniform temperature of 90°C is left in air at 30°C. The density and the specific heat of the metal are 3000 kg/m3 and 0.4 kJ/kg.K respectively. The heat transfer co-efficient is 50 W/m2.K Neglecting the temperature gradients inside the ball, the time taken (in hours) for the ball to cool to 60°C is
Refrigeration and Air Conditioning

Highest pressure encountered in a refrigeration system should be________________?

Highest pressure encountered in a refrigeration system should be________________?

A. critical pressure of refrigerant
B. much below critical pressure
C. much above critical pressure
D. near critical pressure
E. there is no such restriction

Read More Highest pressure encountered in a refrigeration system should be________________?
Mechanical Engineering | Production Engineering

In metal cutting, use of low feeds and high cutting speeds is desired when the objective is

Question: In metal cutting, use of low feeds and high cutting speeds is desired when the objective is
[A].

high metal removal rate
[B].
dry machining
[C].
use of soft cutting tool
[D].
surface finish

Answer: Option D

Explanation:

No answer description available for this question.

Read More In metal cutting, use of low feeds and high cutting speeds is desired when the objective is
Engineering Mechanics | Mechanical Engineering

In actual machines, mechanical advantage is __________ velocity ratio.

Question: In actual machines, mechanical advantage is __________ velocity ratio.
[A].

equal to
[B].
less than
[C].
greater than

Answer: Option B

Explanation:

No answer description available for this question.

Read More In actual machines, mechanical advantage is __________ velocity ratio.
Hydraulics and Fluid Mechanics | Mechanical Engineering

A piezometer tube is used only for measuring

Question: A piezometer tube is used only for measuring
[A].

low pressure
[B].
high pressure
[C].
moderate pressure
[D].
vacuum pressure

Answer: Option C

Explanation:

No answer description available for this question.

Read More A piezometer tube is used only for measuring

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