A p. d. of 200<230° V is applied to two branches connected in parallel. The currents in the respective branches are 20<60º A and 40<30º A. Find the apparent power in kV
A) and the active power (in kW) in each branch and in the main network.

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At steady state, air at 200 kpa, 325 k, and mass flow rate of 0.5 kg/s enters an insulated duct having differing inlet and exit cross-sectional areas. the inlet cross-sectional area is 6 cm2. at the duct exit, the pressure of the air is 100 kpa and the velocity is 250 m/s. neglecting potential energy effects and modeling air as an 1.008 kj/kg k, determine ideal gas with constant cp = (a) the velocity of the air at the inlet, in m/s. (b) the temperature of the air at the exit, in k. (c) the exit cross-sectional area, in cm2

Different between right hand turning tool and left hand turning tool ?