A 2 – core copper cable supplies a single-phase purely resistive load consisting of three 3W lamps each, and a single lamp of 9W all at 240V and 0.78 PF. The cable runs for 40m and each conductor has cross sectional area of 35mm2. Calculate; d) Voltage drop at the load end. e) I2R losses in the cable f) The MCB rating from the DB if the aggregate load is independently control. Take 0.017 copper m  = −

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

Vibration monitoring this technique uses the noise or vibration created by mechanical equipment and in seme cases by plant systems to detemine their actual condtion. a)- true b)- false

Determine the damped natural frequencies and the steady state response of a decoupled damped forced two degrees of freedom system. 10ä1 + 2q1 20q1 10 cos t; 10q2 +4q2 + 40q2 10 cos t