Aheat pump is used to maintain a house at 25c by extracting heat from the outside air on a day when the outside air temperature is 4c. the house is estimated to lose heat at a rate of 110,000 kj/h, and the heat pump consumes 4.75 kw of electric power when running. is this heat pump powerful enough to do the job?

Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned

An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature

Aquick transition of the operating speed of a shaft from its critical speed will whirl amplitude. (a) increase (b) limit (c) not affect (d) zero