what is REF relay?

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Our Slip Ring Induction Motor Frequently tripped By Earth Fault While Starting time and in Normal Operation Time also Kindly Let me Know the Reason. Application Ball Mill - Cement Mill

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why do transformer make a sound

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in three pin plug point, whats the reason that one plug point is bigger in size

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what is the temperature rise test? explain in brief.with formula.

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what is the advantage of NiCd battery over Lead acid battery?

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How many types of electrical earthing are there?

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different types of electrical cable?

1 Answers   Green Power,

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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?

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what is the calculation formula for motor starting torque,running torque, running torque.

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Voltage drop is the:(a) Maximum potential(b) Difference in potential between two points(c) Voltage at the end of a circuit(d) Voltage produced by a source

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why leading pf indicates a negative sign???

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