Question 128Refrigeration & AC - Assistant Engineer
70% to passA refrigeration unit will tend to short cycle when operating under what conditions?
Aduring starting conditions
Black of refrigerant
Cduring hot gas defrost
Dunder heavy loads
AI Explanation
The correct answer is B) lack of refrigerant. A refrigeration unit will short cycle (cycle on and off frequently) when there is a lack of refrigerant in the system. This is because insufficient refrigerant leads to improper cooling, causing the compressor to constantly turn on and off in an attempt to maintain the desired temperature. The other answer choices are incorrect because starting conditions (A), hot gas defrost (C), and heavy loads (D) do not directly cause short cycling on their own. Short cycling is primarily a symptom of low refrigerant levels in the system.
Related Questions
Q37:If the discharge reed valves used in a refrigeration compressor are leaking badl... Q201:What is the pressure and condition of the refrigerant entering the receiver of a... Q220:A box solenoid valve used in a multi-box refrigeration system is operated by ele... Q48:The most cost-effective method of recovering refrigerant from a low-pressure chi... Q2:In a refrigeration system that is not protected by a water failure switch, if th...
Ready to test your knowledge?
Take a Refrigeration & AC - Assistant Engineer Practice ExamOfficial Resources