Aresistor heater is used for heating water for 3 minute at 120 volts and s amps. how much of the electrical power is consumed? a)- 1800w b)- 108 kw c)-600 w d)- 10800 w e)- 1800 kw

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