EXAMIANS
A transmission line has a surge impedance of 400 Ω for a length of the line of 200 km. If the length of line is increased to 400 km, then its surge impedance is
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A generator has reactances of sub transient (X")= 0.5 pu, transient (X') = 0.8 pu and synchronous reactance (X) = 5 pu. The voltages at these reactances are 1.2 V, 1.1 V and 1 V respectively. Find the corresponding sub transient fault current in pu?
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a 50 Hz, 3-phase synchronous generator has inductance per phase of 15 mH. The capacitance of the generator and circuit breaker is 0.002 µF. What is its natural frequency?
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In a three-phase system, when the loads are perfectly balanced, the neutral current is
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Which of the following matrix is used for load flow studies?
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If the fault is very nearer to the generator, the fault current is
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The characteristic impedance of a transmission on line is
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Which of the following are the fissile materials
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The power station that does not requier any moving part is
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Which of the following transmission line is most practically used in load flow analysis?
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