A cyclic steam power plant is designed to supply steam from the boiler at 10 MPa and 550 °C when the boiler is supplied with feed water at a temperature of 210 °C. It is estimated that the thermal efficiency of the cycle will be 38.4% when the net power output is 100MW. Calculate the steam consumption rate (m,). The enthalpy of the feed water may be taken as being equal to the enthalpy of saturated water at the same temperature. The boiler efficiency is 87% and the HHV of the fuel is 42500 kJ/kg. Calculate the rate of fuel consumption in kg/s (m,) and ton/min.

a) A sinewave is having a frequency of 100 Hz and instantaneous value of 150 Volts at 1.4 milli seconds. Find i) The maximum value of sinusoidal voltage waveform and ii) The value of voltage at 1.8 milli seconds. b) Determine the instantaneous equation for the voltage waveform shown in figure, if Vp=100 Volts, Time period is 10 milli seconds and o =30 degrees. Vp t= 0 Upload your Answers steps in the "Final Answer Submission" Link provided in the Moodle. a) (i) Maximum value = a) (ii) Value of voltage at 1.8 ms b) Angular frequency =

step down chopper has Vs = 230 V and R = 10 0. For a duty cycle of 0.4, the power taken by the chopper is 2097 Watts. Find the chopper efficiency. Take the voltage drop across the chopper switch as 2 V. a) 98 % b) 89.96 % c) 99.14 % d) 96.54 %

Instantaneous voltage is multiplication of the resistace and .......... current in the resistive circuit. a) instantaneous    b) average        c) rms        d) peak