Answer / asmita

For calculation of efficiency of a T/F it is essential to
carry out Open Ckt. n Short Ckt test( As we can not load
each n every t/f to its rated capacity this will consume a
lot of power.)From O.C.test we can find iron losses of T/F
& from S/c test we can find full load or at any load copper
losses.
For these Electrodynamometer type wattmeters should be used
as it is very sensitive device n Power factor during this
test is very low.

dg started in plc mode and load taken later one battery terminal connection will be disconnected by loose connection what will happen for dg and shall we connect battery terminals while dg in load time?

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how we sesign the transformer give some specifion regarding design of transformers

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why we are using earth pit in sub stations.?

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Electromagnetic torque developed by the motor is compared to shaft torque. A less B same C depends on motor design D more

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What happens if the negative to earth voltage is greater than positive to earth voltage in the battery of substation?

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how to find the torque of the single phase synchronous motor by doing an experiment

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what is the differnce b/w voltage and current

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how to calculate the battery Ah? what is the formula.

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how we can calcultae the short circuit level for bus bar

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What happen if we give resistance to the armatuure of a dc motor?a

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1. what is the power factor and whatis his losses 2. what is the working procedure of 51RNB AND 87 relay

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what is the difference between electrical choke and electronic choke?

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