I) a circular coil with radius 20 cm is placed with it's plane parallel and between two straight
wires p and q. the coil carries current i = 0.5a .current of the coil is in clockwise direction when viewed from left side. wire p is located 40 cm to the left of a circular coil and carries current of wire p = 0.2a
while wire q is located 80 cm to the right of the circular coil and carries current of wire q=0.6a. both current of wire p and q are in the same directions into the paper. determine the resultant of magnetic field at the centre of a circular coil from the top view.

Asteam power plant operates on an ideal reheat rankine cycle between the pressure limits of 15 mpa and 10 kpa. the mass flow rate of steam through the cycle is 12 kg/s. steam enters both stages of the turbine at 500°c. if the moisture content of the steam at the exit of the low-pressure turbine is not to exceed 10 percent, determine (a) the pressure at which reheating takes place, (b) the total rate of heat input in the boiler, and (c) the thermal efficiency of the cycle. also, show the cycle on a t-s diagram with respect to the saturation lines. (2.15 mpa; 45.0 mw; 42.6%)

Which situation will produce the greatest change of momentum

Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.1 m below the tank bottom which is a = 7.4 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute)