EXAMIANS
The wind speed increases with height because of
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A single phase motor connected to 415 V, 50 Hz supply takes 30 A at a power factor of 0.7 lagging. Calculate the capacitance required in parallel with the motor to raise the power factor to 0.9 lagging.
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____are long-term (hours-long) voltage sags caused by system overload.
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A three-phase, 12 kV, 50 Hz and 300 kW load is operating at 0.8 pf lag. If the pf is to be improved to unity, using star connected capacitor, the per phase value of the reactive VAR required is:
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In a power network, 400 kV is recorded at a 415 kV bus. A 50 MVAR, 415 kV shunt reactor is connected to the bus. What is the reactive power absorbed by the shunt reactor?
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Which of the following does the term 'feeder automation' include?
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A sudden, non power frequency change in the steady state condition of voltage or current that is bidirectional in polarity is called as
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In a 3-phase, 4-wire, 400/230 V system, a lamp (L1) of 100 W is connected to one phase and neutral and a lamp (L2) of 150 W is connected to the second pahse and neutral. If the neutral wire is disconnected accidently, then
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In the following question, one part of the sentence may have an error. Find out which part of the sentence has an error and select the option corresponding to it. If the sentence contains no error, Select "No error'' option. (Avoid punctuation errors).<br/>(A) The Manager, with / (B) all his employee, was / (C) fired from the company /(D) NO ERROR
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Consider a solar PV plant with the following specific conditions: Analysis period: 1 year<br/>Measured average solar irradiation intensity in 1 year: 120 kWh/m²<br/>Generator area of the PV plant: 10 m²<br/>Efficiency factor of the PV modules: 15%<br/>Electrical energy actually exported by plant to grid: 110 kWh<br> Calculate the performance ratio.
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