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In a synchronous machine, all of the following losses are fixed except -
উত্তর
copper loss
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It is required to convert a galvanometer of current range 15 mA and voltage range 750 mV into an ammeter of range 2.5A. What is the value of shunt resistance required?
উত্তর
0.3 Ω
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A 3-phase transmission line operating at 10 kV has a resistance of 1 ΩΩ. The percentage resistance of the line at 10,000 kVA base is -
উত্তর
10%
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If you are checking a 50 Hz full-wave bridge rectifier and observe that output has a 50 Hz ripple, then -
উত্তর
there is an open diode
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The effect of increase in temperature of overhead line is to -
উত্তর
decrease the stress but to increase length
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In a thermal power plant, the feed water coming to the economiser is heated using -
উত্তর
flue gases