AIR CONDITIONING MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS MCQ makes understanding full. It also increases the level of clarity. Air conditioning is simultaneous control of temperature, humidity, purity and velocity. Comfort and industrial air conditioning are two types of air conditioning. Industrial air conditioning improves the quality and quantity of a product. Comfort air…
COOLING LOAD CALCULATIONS MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS MCQ increases level of clarity and understanding. Cooling load calculations means finding the capacity of the cooling plant for a particular application. Cooling loads consist of sensible and latent heat load contributed by different sources. Inside and outside design conditions along with cooling loads help in…
PSYCHROMETRY MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS MCQ on psychrometry increases level of understanding & clarity. Psychrometry deals with the properties of moist air. Psychrometric processes on psychrometry chart help to reach from the existing condition of air to reach the design conditions. It is very useful in air conditioning applications. Fig. Psychrometric Chart (…
STEAM JET REFRIGERATION MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS MCQ increases clarity and understanding. It is applied where steam is available. It is vibration free. This is economical as compared to other systems of refrigeration. Number of nozzles in Steam Jet Refrigeration is Two Four Six None ANS: (d) Number of nozzles in Steam Jet…
GAS REFRIGERATION MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS COP of gas refrigeration is much less than one. All the aircrafts use Gas refrigeration because of easy availability, free, safe & eco-friendly nature of air as refrigerant. Fig. Bell-Coleman Cycle Fig. Bell Coleman Cycle on Temperature-Entropy Chart A gas refrigeration works on Carnot Cycle Rankine Cycle…
LIQUEFACTION OF GASES MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS When a gas is at a lower than its inversion temperature, cooling occurs on expansion. Thus, must bring gases below inversion temperatures before liquefaction. 1. When air expands at room temperature (a) Produce heating (b) Cooling produces (c) Neither heating nor cooling produces (d) None (Ans:…
VAPOR COMPRESSION REFRIGERATION MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS MCQ increases clarity and understanding. Most commonly used method of refrigeration is vapor compression refrigeration. Cooling capacity is the cooling produced per minute. Refrigeration is measured in tons of refrigeration (1 ton = 211kJ/min of cooling effect).Cooling effect is caused by latent heat in vapor refrigeration…
NON CONVENTIONAL REFRIGERATION MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS MCQ makes the concept very clear. More MCQ may be practiced to improve knowledge further. Then, it is very useful in the design, construction and working of the system. 1. The materials of thermoelectric refrigeration systems should have: (a) High electrical and thermal…
CASCADE REFRIGERATION MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS Cascade refrigeration is an extension of vapor compression refrigeration in order to achieve lower temperatures. There are independent refrigeration circuits using different refrigerants. These are interconnected. Two-three-four stage systems are in use. Fig. Two stage Cascade refrigeration Line diagram & its representation on p-h Chart 1. Cascade…
VAPOR ABSORPTION REFRIGERATION MULTIPLE CHOICE QUESTIONS WITH ANSWERS (MCQ) Vapor absorption refrigeration is like a vapor compression system. The means of compression are different. It causes refrigeration from heat. 1. Vapor absorption refrigeration uses (a) Mechanical energy (b) Electric energy (c) Kinetic energy (d) None (Ans: d) 2. Vapor absorption refrigeration uses (a) Mechanical energy…