Estimate the design-stage uncertainty in determining the voltage drop(v)across an electric heatingelement. the device has a nominal resistance of 30 ωand power rating of 500 w. available is anohmmeter (accuracy: within 0.5%; resolution: 1 v) and ammeter (accuracy: within 0.1%; resolution: 100 ma).

The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false

Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false

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