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Showing posts from February, 2023
A long shunt compound generator has an armature winding resistance of 0.05 ohm . The series field winding resistance of 0.03 ohm and the shunt field winding of 75 ohm. The generator supplies a load of 20 kW at 300 V. Calculate induced emf in the generator if the voltage drop per brush is 1 v.
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A closed vessel contains 2 kg of carbon-dioxide at temperature degree celsius and pressure 0.7 bar. Heat is supplied to the vessel till the gas occupies a pressure of 14 bar, Calculate (a) final temperature (h) work done on or by the gas, (e) heat added and (d) change in internal energy e) Change in entropy. Take specific heat of gas at constant volume as 0.657 kJ/kg K.
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