Power Systems The equation of area control error(ACE) is ACE = ΔPtie + b.Δf ACE = ΔPtie - b.Δf ACE = ΔPtie +1/ b.Δf ACE = ΔPtie - 1/b.Δf ACE = ΔPtie + b.Δf ACE = ΔPtie - b.Δf ACE = ΔPtie +1/ b.Δf ACE = ΔPtie - 1/b.Δf ANSWER DOWNLOAD EXAMIANS APP
Power Systems A string insulator has 4 units. The voltage across the bottom most unit is 33.33% of total voltage. Its string efficiency is 66.66% 33.33% 75% 25% 66.66% 33.33% 75% 25% ANSWER DOWNLOAD EXAMIANS APP
Power Systems Advantages of per unit system is/are No units for any quantity Need of transformation ratio It has units for all quantities All of these No units for any quantity Need of transformation ratio It has units for all quantities All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems The per unit impedance of a circuit element is 0.30. If the base kV and base MVA are halved, then the new value of the per unit impedance of the circuit element will be 0.30 0.60 0.0030 0.0060 0.30 0.60 0.0030 0.0060 ANSWER DOWNLOAD EXAMIANS APP
Power Systems What is the total installed power capacity (MW) in West Bengal as published by ministry of power in 2011? 10000.32. 15515.22. 8113.27. 6114.05. 10000.32. 15515.22. 8113.27. 6114.05. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 50 Hz, 17.32 kV generator is connected to a power system. The system reactance and capacitance per phase are 10 mH and 0.2 mF respectively. What is the maximum voltage across the contacts of the circuit breaker at an instant when it passes through zero? 31.28 kV 28.28 kV 29.28 kV 30.28 kV 31.28 kV 28.28 kV 29.28 kV 30.28 kV ANSWER DOWNLOAD EXAMIANS APP
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