A3 cm diameter electric transmission line dissipates heat at a rate of 50w per meter. if the cable is in otherwise motionless air calculate the surface temperature of the power line if: a. the air temperature is 25°c in summer b. the air temperature is 5°c in winter

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

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

Inspection for bearing condition will include: (clo4) a)-color b)-smell c)-size d)-none of the above