The water in a large lake is to be uses to generate electricity by installing a hydraulic turbine- generator at 50 m below the free surface of the water. water is supplied at a rate of 5000 kg/s and the electricity generated is 1862 kw. if the efficiency of the generator is 95%, determine: a. the overall efficiency of the turbine-generator. b. the efficiency of the turbine. c. the shaft power supplied by the turbine to the generator,

The higher the astm grain size number, the finer the gran is. a)-true b)-false

What are the two (02) benefits, which may result from a successful implementation of preventive maintenance (pm) program in an organization? (clo3)a)- lean manufacturing b)-overlapping responsibilities c)-the planner is not qualified d)-accurate contractor information e)-reduction in equipment redundancies f)-accurate stores information

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.