Question: The boiling point of __________ is -10.5°C.
[A].ammonia
R-12
sulphur dioxide
carbon dioxide
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
Mechanical Engineering
The boiling point of carbon dioxide is
Question: The boiling point of carbon dioxide is
[A].-20.5°C
-50°C
-63.3°C
-78.3°C
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
The boiling point of ammonia is
Question: The boiling point of ammonia is
[A].-10.5°C
-30°C
-33.3°C
-77.7°C
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
Which of the following statement is correct for ammonia as a refrigerant?
Question: Which of the following statement is correct for ammonia as a refrigerant?
[A].It is toxic to mucous membranes.
it requires large displacement per TR compared to fluoro carbons.
It reacts with copper and its alloys.
all of these
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
A refrigerant with the highest critical pressure is
Question: A refrigerant with the highest critical pressure is
[A].R-11
R-12
R-22
Ammonia
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
Which of the following refrigerant has the lowest freezing point?
Question: Which of the following refrigerant has the lowest freezing point?
[A].R-11
R-12
R-22
Ammonia
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
A good refrigerant should have
Question: A good refrigerant should have
[A].high latent heat of vaporisation and low freezing point
high operating pressures and low freezing point
high specific volume and high latent heat of vaporisation
low C.O.P. and low freezing point
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
In a lithium bromide absorption refrigeration system
Question: In a lithium bromide absorption refrigeration system
[A].lithium bromide is used as a refrigerant and water as an absorbent
water is used as a refrigerant and lithium bromide as an absorbent
ammonia is used as a refrigerant and lithium bromide as an absorbent
none of the above
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Hydrogen is used in electrolux refrigeration system so as to __________ the rate of evaporation of the liquid ammonia passing through the evaporator.
Question: Hydrogen is used in electrolux refrigeration system so as to __________ the rate of evaporation of the liquid ammonia passing through the evaporator.
[A].equalise
reduce
increase
[A].
[B].
[C].
Answer: Option C
Explanation:
No answer description available for this question.
An electrolux refrigerator is called a __________ absorption system.
Question: An electrolux refrigerator is called a __________ absorption system.
[A].single fluid
two fluids
three fluids
[A].
[B].
[C].
Answer: Option C
Explanation:
No answer description available for this question.