MCQ Questions Mechanical Engineering Refrigeration and Air Conditioning

Take a look at these MCQ Questions Refrigeration and Air Conditioning for engineering interview questions and our tips on how to answer them. If you’re applying for an engineering internship, graduate scheme or entry-level job, you’ll face at least one interview as part of an engineering employer’s recruitment process. You may be interviewed by one or more members of the HR team, senior members of the engineering team you’d be joining or a mixture of both. In this section we will study MCQ Questions Mechanical Engineering Refrigeration and Air Conditioning.

As well as questions about your reasons for applying to the role and the employer in question, engineering recruiters will be assessing your potential in the areas that is crucial to any engineering role: technical expertise. Engineers may be asked to perform feats of fantastic technical prowess, but it will be as as part of a Justice League rather than as a solo engineering super hero.

The interviewer is almost as nervous as the candidate in most interviews. You might wonder if you look confident enough, if you will hire the right person, or if you are asking the right engineering interview questions. The last question is arguably the most crucial part to worry about when you’re interviewing candidates.

MCQ Questions Mechanical Engineering Refrigeration and Air Conditioning - Set - 3

Question 1:

Refrigeration in aeroplanes usually employs the following refrigerant
(a) Co2
(b) Freon-11
(c) Freon-22
(d) Air

Check Answer

Correct Answer – (D)

Question 2 :

The domestic refrigerator uses following type of compressor
(a) centrifugal
(b) axial
(c) miniature sealed unit
(d) piston type reciprocating

Check Answer

Correct Answer – (D)

Question 3 :

Rating of a domestic refrigerator is of the order of
(a) 0.1 ton
(b) 5 tons
(c) 10 tons
(d) 40 tons

Check Answer

Correct Answer – (A)

Question 4 :

Critical temperature is’ the temperature above which
(a) a gas will never liquefy
(b) a gas will immediately liquefy
(c) water will evaporate
(d) water will never evaporate

Check Answer

Correct Answer – (A)

Question 5 :

The condensing pressure due to the presence of non-condensable gases, as compared to that actually required for condensing temperatures without non-condensable gases,
(a) will be higher
(b) will be lower
(c) will remain unaffected
(d) may be higher or lower depending upon the nature of non-condensable gases

Check Answer

Correct Answer – (A)

MCQ Questions Mechanical Engineering Refrigeration and Air Conditioning

Question 6:

Presence of moisture in a refrigerant affects the working of
(a) compressor
(b) condenser
(c) evaporator
(d) expansion valve.

Check Answer

Correct Answer – (D)

Question 7:

The COP of a domestic refrigerator
(a) is less than 1
(b) is more than 1
(c) is equal to 1
(d) depends upon the make

Check Answer

Correct Answer – (B)

Question 8:

The refrigerant for a refrigerator should have
(a) high sensible heat
(b) high total heat
(c) high latent heat
(d) low sensible heat

Check Answer

Correct Answer – (C)

Question 9:

Critical pressure of a liquid is the pressure
(a) above which liquid will remain liquid
(b) above which liquid becomes gas
(c) above which liquid becomes vapour
(d) above which liquid becomes solid

Check Answer

Correct Answer – (A)

Question 10:

The moisture in a refrigerant is removed by
(a) evaporator
(b) safety relief valve
(c) dehumidifier
(d) driers

Check Answer

Correct Answer – (D)

MCQ Questions Mechanical Engineering Refrigeration and Air Conditioning

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