Answer Posted / b.ramesh

Sub-station means total equipment of HT errection such as
Breakers,AB switch,CT's,PT's and Transformer.
Switch Yard means only AB switches with CT and PT.

For a spring controlled governer the relation F = ar+b (F is the controlling force, r is the radius of rotation a and b are constants), indicates that the governer is

1270

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What is the lockout relay

1576

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can i use 4 number of circuit breaker as single phase manual change over switch? if yes then how plz also send ckt diagram at nazimzamurad@gmail.com

2175

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What is the relation between frequency and motor rpm?

1898

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Why is back emf used for a DC motor? Highlight its significance.

1249

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Determine the BTU size of an aircon for 20 sq metre room

1916

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What is accuracy of a measurement?

1188

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I have doubt that the supply HZ (very low or high than rated ) may affect the power factor. is it true. ?

1728

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An impedance of 100 ohms resistance and an unknown inductance is connected across the capacitor. The resulting impedance is a pure resistance of 500 ohms ifω = 10^5 rad/sec. calculate the values of inductor and capacitor.

1467

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What are the uses of stepper motor?

1301

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Anybody know how schematic diagram for reverse power relay? RPR for generator protection

2184

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what is through fault?

2368

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Why does an induction generator is preffered as compared to synchronous generator in especially a wind energy power production project?

2177

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I have made a 3 phase thyristor full bridge rectifier. But at the moment it is working only for the half bridge operation. Both the half bridges are on operation separately but when i put it into full bridge operation the oscilloscope output is zero. I rechecked that the pulses are correct for each thyristor. what could be the possible reason for this?

2030

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What are operating procudures & Safety precautions to be observed while operating OLTC in manual mode ?

2054

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