Power Systems In a 3-phase transmission line, each phase is supported by 3 insulated discs, maximum voltage of each disc is 20 kV. Find the operating voltage of the transmission line per phase if efficiency of string is 80.6%. 48.36 kV 83.76 kV 20 kV 52.84 kV 48.36 kV 83.76 kV 20 kV 52.84 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems In Rankine cycle, the work output from a turbine is given by change in internal energy between inlet and outlet. change of entropy between inlet and outlet. change of enthalpy between inlet and outlet. change in temperature between inlet and outlet. change in internal energy between inlet and outlet. change of entropy between inlet and outlet. change of enthalpy between inlet and outlet. change in temperature between inlet and outlet. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is used in thermal plants Otto cycle Joule cycle Rankine cycle All of these Otto cycle Joule cycle Rankine cycle All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a 220 kV system, the inductance and capacitance up to the circuit breaker location are 25 mH and 0.025 µF respectively. The value of resistor required to be connected across the breaker contacts which will give no transient oscillations, is 1000 Ω 500 Ω 25 Ω 250 Ω 1000 Ω 500 Ω 25 Ω 250 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems An alternator having an induced emf of 1.6 pu is connected to an infinite bus of 1 pu. If the bus bar has reactance of 0.6 pu and alternator has reactance of 0.2 pu, what is the maximum power that can be transferred? 6 pu 5 pu 2 pu 2.67 pu 6 pu 5 pu 2 pu 2.67 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems Bonding is done at the both ends of the cable to reduce the sheath loss copper loss None of these iron loss sheath loss copper loss None of these iron loss ANSWER DOWNLOAD EXAMIANS APP
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