Category Archives: Refrigeration and Air Conditioning MCQ

This set of Refrigeration Multiple Choice Questions & Answers (MCQs) focuses on “Two/Multi Stage Compression with Water Intercooling and Liquid Subcooling – 1”. 1. What type of compound vapor compression is the following diagram of? a) Two stage vapor compression with liquid intercooler b) Three stage vapor compression with water intercooler and liquid subcooler c) … Read more

This set of Refrigeration Multiple Choice Questions & Answers focuses on “Two/Multi Stage Compression with Liquid Intercooling – 2”. 1. Why multi-stage or compound VCR with intercooler is used? a) To improve C.O.P. b) To decrease the refrigeration effect c) To increase work d) To increase leakage loss 2. What is the purpose of using … Read more

This set of Refrigeration Multiple Choice Questions & Answers (MCQs) focuses on “Two/Multi Stage Compression with Liquid Intercooling – 1”. 1. Which one of the following is not an advantage of compound vapor compression with intercooler? a) It improves the volumetric efficiency for the given pressure ratio b) It reduces the leakage losses c) It … Read more

This set of Refrigeration Multiple Choice Questions & Answers (MCQs) focuses on “Simple VCR System – Pressure – Enthalpy Chart”. 1. What is the effect of using a flash chamber in VCR system? a) C.O.P. increases b) C.O.P. decreases c) C.O.P. remains the same d) Mass of refrigerant flowing through evaporator increases 2. From the … Read more

This set of Refrigeration MCQs focuses on “Effect of Various Parameters on VCR System – 2”. 1. What is the use of a flash chamber in VCR system? a) To increase pressure b) To decrease pressure c) To separate vapour and liquid refrigerant d) To evaporate refrigerant partially 2. What is the amount of mass … Read more

This set of Refrigeration Multiple Choice Questions & Answers (MCQs) focuses on “Effect of Various Parameters on VCR System – 1”. 1. Which of these is not an effect of superheat in suction vapour? a) increase in refrigeration effect b) increase in compression work c) decrease the capacity of compressor per ton of refrigeration d) … Read more

This set of Refrigeration Multiple Choice Questions & Answers (MCQs) focuses on “Actual VCR Cycle”. 1. Which of the following is not the difference between theoretical and actual VCR cycle? a) Pressure drops in the evaporator b) Pressure drops in the condenser c) Compression of refrigerant is never polytropic d) Compression of refrigerant is always … Read more

This set of Refrigeration Problems focuses on “Theoretical VCR with Under Cooling or Sub-Cooling”. 1. What type of VCR is shown in the T – s diagram? a) Theoretical VCR with sub-cooling or under cooling b) Theoretical VCR with wet before compression c) Theoretical VCR with wet after compression d) Theoretical VCR with dry compression … Read more

This set of Advanced Refrigeration Questions and Answers focuses on “Theoretical VCR with Superheated Vapour before and after Compression”. 1. The net effect of superheating is to have ________ COP. a) higher b) lower c) moderate d) higher or lower depending on the refrigerant used 2. The COP of vapor compression when vapor is superheated … Read more

This set of Refrigeration Multiple Choice Questions & Answers (MCQs) focuses on “Theoretical VCR with Wet Vapour after Compression”. 1. The COP of vapor compression when vapor is wet after compression having refrigeration effect (Re) of 60 and work done (W) of 20 is? a) 3 b) 4 c) 4.2 d) 5 2. Which case … Read more