@⇒ Refrigeration and Air Conditioning ⇒ Mechanical Engineering Multiple Choice Questions / Objective type questions, MCQ's, with question and answers, download free PDF, short cut notes, rapid fire notes, best theory

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Q1.	Most air cooled condensers are designed to operate with a temperature difference of
A.	5Â°C [Wrong Answer]
B.	8Â°C [Wrong Answer]
C.	14Â°C [Correct Answer]
D.	22Â°C [Wrong Answer]
View Answer 22 -12 Explanation:- Answer : C Discuss it below : Click here for more comments


Q2.	Logarithmic mean temperature difference is the same as the arithmetic mean temperature difference.
A.	Agree [Wrong Answer]
B.	Disagree [Correct Answer]
C.	Both (a) and (b) [Wrong Answer]
D.	None of these [Wrong Answer]
View Answer 14 -8 Explanation:- Answer : B Discuss it below : Click here for more comments


Q3.	The relative humidity is defined as.
A.	the mass of water vapour present in 1 m3 of dry air [Wrong Answer]
B.	the mass of water vapour present in 1 kg of dry air [Wrong Answer]
C.	the ratio of the actual mass of water vapour in a unit mass of dry air to the mass of water vapour in the same mass of dry air when it is saturated at the same temperature and pressure. [Wrong Answer]
D.	the ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour in the same volume of saturated air at the same temperature and pressure [Correct Answer]
View Answer 7 -8 Explanation:- Answer : D Discuss it below : Click here for more comments


Q4.	The condition of refrigerant after passing through the condenser in a vapour compression system is
A.	saturated liquid [Correct Answer]
B.	wet vapour [Wrong Answer]
C.	dry saturated vapour [Wrong Answer]
D.	superheated vapour [Wrong Answer]
View Answer 13 -10 Explanation:- Answer : A Discuss it below : Click here for more comments


Q5.	The total radiation from a black body per second per unit area is __________ fourth power of the absolute temperature. This statement is known as Stefan-Boltzmann law.
A.	equal to [Wrong Answer]
B.	directly proportional to [Correct Answer]
C.	inversely proportional to [Wrong Answer]
D.	none of these [Wrong Answer]
View Answer 3 -1 Explanation:- Answer : B Discuss it below : Click here for more comments

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