EXAMIANS
Pumped storage plant is a
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What will be the ratio of the C.T. on the H.V side of a 3 - φ star / delta 33 / 11 kV transformer if the protecting CT on the LV side has a ratio of 300 : 5 ?
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Which of following generating plants has the minimum operating cost
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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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The corona loss on a particular system at 60 Hz is 1 kW/km per phase. What is the corona loss at 50 Hz in kW/km per phase?
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For a 500 Hz frequency excitation, a 100 km long power line will be modelled as
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Which of the following statements is true? Corona loss increases with
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A thermal power plant is being supplied with coal having much more ash content than that for which it was designed. Which of its following units needs major modifications
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A 1-phase transmission line has an impedance (3+4j) Ω . Find the power factor of the load for achieving maximum and zero voltage regulation?
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Which of the following buses is/are not PV buses?
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