Power Systems A hydro power plant of run off river type should be provided with pondage so that the firm capacity of plant is increased. pressure inside the turbine casing remains. operating head is controlled. kinetic energy of the running water is fully utilized. firm capacity of plant is increased. pressure inside the turbine casing remains. operating head is controlled. kinetic energy of the running water is fully utilized. 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
Power Systems How to find the total number of strands (N) when number of layers (x) are given Total number of strands N = 3x² + 3x + 1 Total number of strands N = 3x² + 3x - 1 Total number of strands N = 3x² - 3x + 1 Total number of strands N = 3x² - 3x - 1 Total number of strands N = 3x² + 3x + 1 Total number of strands N = 3x² + 3x - 1 Total number of strands N = 3x² - 3x + 1 Total number of strands N = 3x² - 3x - 1 ANSWER DOWNLOAD EXAMIANS APP
Power Systems To protect the power transformer ( Y-Y with neutral grounded) against fault, which type of connection do the current transformers have? Y-Δ connection Δ-Δ connection Y-Y connection Δ-Y connection Y-Δ connection Δ-Δ connection Y-Y connection Δ-Y connection ANSWER DOWNLOAD EXAMIANS APP
Power Systems Length of short transmission line is up to any of the above 40 km 150 km 80 km any of the above 40 km 150 km 80 km ANSWER DOWNLOAD EXAMIANS APP
Power Systems Isolator in sub station is open under ------------- condition? full load short circuit any of the above no load full load short circuit any of the above no load ANSWER DOWNLOAD EXAMIANS APP
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