Refrigeration And Air Conditioning - Mechanical Engineering

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REFRIGERATION AND AIR CONDITIONING - MECHANICAL
ENGINEERING MULTIPLE CHOICE QUESTIONS AND
ANSWERS LIST ACADEMIC YEAR 2026-27
Latest Refrigeration and Air Conditioning Questions and Answers

1. Pick up the wrong statement. A refrigerant should have
(a) Tow specific heat of liquid
Labels
(b) high boiling point
(c) high latent heat of vaporisation A.C. Fundamentals
(d) higher critical temperature A.C. Fundamentals
(e) low specific volume of vapour. Online Quiz Questi
Ans: b AC Fundamentals a
Online Quiz Questi
2. A standard ice point temperature corresponds to the temperature of Airport Engineering
and Answers
(a) water at 0°C
(b) ice at - 4°C Airport Engineering
Questions
(c) solid and dry ice
Applied Mechanics
(d) mixture of ice, water and vapour under equilibrium conditions under NTP conditions Objective Question
(e) mixture of ice and water Under equilibrium conditions.
Applied Mechanics
Ans: e Online Quiz Questi
Building Materials a
3. Vapour compression refrigeration is some what like Objective Question
(a) Carnot cycle Cables Online Quiz
(b) Rankine cycle Cables Online Quiz
(c) reversed Camot cycle Answers
(d) reversed Rankine cycle Chemical Engineeri
(e) none of the above. Questions and Ans
Ans: e CIRCUIT THEORY A
NETWORKS Questi
4. Which of the following cycles uses air as the refrigerant Circuits and Circuit
(a) Ericsson Questions and Ans
(b) Stirling Civil Engineering In
(c) Carnot and Answers pdf do
(d) Bell-coleman competitive and en
(e) none of the above. Compressors
Ans: d Concrete Technolo

5. Ammonia-absorption refrigeration cycle requires
(a) very little work input




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(b) maximum work input Concrete Structure
(c) nearly same work input as for vapour compression cycle Construction Plann
(d) zero work input Objective question
(e) none of the above. Construction Plann
Ans: a Online Quiz Questi
Control Systems Q
Answers
6. An important characteristic of absorption system of refrigeration is
(a) noisy operation CSE Course Questi
(b) quiet operation Current Electricity
questions and Ans
(c) cooling below 0°C
(d) very little power consumption Current Electricity
(e) its input only in the form of heating. D.C. Generators Qu
Answers
Ans: b
D.C. Motors Quiz Q
The relative coefficient of performance is DC Generators Onli
(a) actual COP/fheoretical COP DC Motors Online Q
(b) theoretical COP/actual COP Design of Masonry
(c) actual COP x theoretical COP Questions and Ans
(d) 1-actual COP x theoretical COP Design of Steel Str
(e) 1-actual COP/fheoretical COP. Questions
Ans: a Design of Steel Str
Questions

8. Clapeyron equation is a relation between Docks and Harbor E
Questions and Ans
(a) temperature, pressure and enthalpy
ECE Objective type
(b) specific volume and enthalpy
Answers
(c) temperature and enthalpy
ECE Questions and
(d) temperature, pressure, and specil volume Competitive Questi
(e) temperature, pressure, specific volur and'enthalpy.
Economics of Powe
Ans: e Quiz Questions
Economics of Powe
19. Clapeyron equation is applicable for registration at Questions and Ans
(a) saturation point of vapour Electric Traction Qu
(b) saturation point of liquid Answers
(c) sublimation temperature Electrical Cables Qu
(d) triple point Answers
(e) critical point. Electrical Engineeri
Ans: a Questions
Electrical Engineeri
10. In vapour compression cycle, the conditii of refrigerant is saturated liquid Questions and Ans
(a) after passing through the condenser Electrical Engineeri
(b) before passing through the condensei Electrical Machine
(c) after passing through the expansion throttle valve and Answers
(d) before entering the expansion valve Electrical Mechine
(e) before entering the compressor. Electrical Mechine
Ans: a ELECTRICAL OBJEC
WITH ANSWERS
11. In vapour compression cycle, the condition of refrigerant is very wet vapour Electrolysis and Sto
(a) after passing through the condenser Online Quiz questio
(b) before passing through the condenser Electrolysis and Sto
Questions and Ans
(c) after passing through the expansion or throttle valve
(d) before entering the expansion valve Electromagnetic In
Questions
(e) before entering the compressor.
Ans: e Electromagnetic In
Questions and Ans
Electromagnetic Ob
12. In vapour compression cycle, the condition of refrigerant is high pressure saturated liquid
questions and answ
(a) after passing through the condenser
Electrostatics Onlin
(b) before passing through the condenser
Electrostatics Quiz
(c) after passing through the expansion or thiottle valve
Answers
(d) before entering the expansion valve
Engineering Materi
(e) before entering the compressor. papers
Ans: d
Engineering Materi
Questions and Ans
13. In vapour compression cycle the condition of refrigerant is superheated vapour Engineering Materi
(a) after passing through the condenser
Engineering Materi
(b) before passing through the condenser Questions and Ans
(c) after passing through the expansion or throttle valve Engineering Mecha
(d) before [entering the expansion valve Questions and Ans
(e) before entering the compressor. Engineering Mecha
Ans: b Tests
Engineering Mecha
14. In vapour compression cycle the condition off refrigerant is dry saturated vapour Questions
(a) after passing through the condenser Engineering Mecha
(b) before passing through the condenser and Answers
(c) after passing through the expansion or throttle valve Engines
(d) before entering the expansion valve Environmental Eng
(e) before entering the compressor.. type Questions and
Ans: e Environmental Eng
Questions
15. The boiling point of ammonia is Fluid Mechanics Int
(a) -100°C Fluid Mechanics Ob
(b) -50°C and Answers

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