E)Purely resistive loads of 24 kW, 18 kW, and 12 kW are connected between the neutral and the red, yellow and blue phases respectively of a 3-Φ, four-wire system. The line voltage is 415 V. Calculate: i. the current in each line conductor (i. e., IR, IY and IB); and
ii. the current in the neutral conductor.

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

The thermal expansion or contraction of a given metal is a function of the f a)-density b)-initial temperature c)- temperature difference d)- linear coefficient of thermal expansion e)- final temperature f)- original length

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