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Unit 4 Quiz 2
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1. When checking disc rotors, which of these measurements need to be performed?
OA. Radial runout and lateral runout
OB. Warpage and radial runout
OC. Radial runout and thickness variation
OD. Lateral runout and thickness variation
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Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 mpa and -10°c at a rate of 0.05 ka/s and leaves at 0.8 mpa and 50°c. the refrigerant is cooied in the condenser to 0.72 mpa and 26'c. it is then throttled to 0.15 mpa. sketch the t-s diagram for the system and evaluate: 6) the rate of heat removai from the refrigerated space (kw), it) the power input to the compressor (kw), ii) the isentropic efficiency of the compressor (%), and iv) the cop of the refrigerator.