Power Systems Making and breaking currents of 3 phase AC circuit breakers in power system are respectively in what form? RMS and Instantaneous value RMS and RMS value any of the above Instantaneous and RMS value RMS and Instantaneous value RMS and RMS value any of the above Instantaneous and RMS value ANSWER DOWNLOAD EXAMIANS APP
Power Systems A Pelton wheel turbine having a rated speed of 300 rpm is connected to an alternator to produce power at 50 Hz. The number of poles required in the alternator is 20 4 10 8 20 4 10 8 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Due to proximity effect, the increase in conductor resistance is not negligible in communication lines overhead transmission lines All of these underground cable communication lines overhead transmission lines All of these underground cable ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statement is/are true?Zn both 1 and 2 The neutral grounding impedance Zn appears as 3Zn in zero sequence equivalent circuit The neutral grounding impedance Zn appears as Zn in zero sequence equivalent circuit nether 1 nor 2 both 1 and 2 The neutral grounding impedance Zn appears as 3Zn in zero sequence equivalent circuit The neutral grounding impedance Zn appears as Zn in zero sequence equivalent circuit nether 1 nor 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 3-phase transmission line operating at Vs = 400 kV and has ABCD parameters A= D = 0.8∠0°, B = 100∠90° Ω, C = 0.5*10^-6∠90° ℧. Find the shunt reactor required for compensating ferranti effect? 1500 Ω 2000 Ω 500 Ω 3000 Ω 1500 Ω 2000 Ω 500 Ω 3000 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems Taking the density of water to be 1000 kg/m³, how much power would be developed by a hydro electric generator unit, assume 100% efficiency, with 1 m head and 1 m³/s discharge? 4.45 kW 19.60 kW 2.90 kW 9.81 kW 4.45 kW 19.60 kW 2.90 kW 9.81 kW ANSWER DOWNLOAD EXAMIANS APP
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