why we r used DC megger insted of AC megger?
To test insulation , you build voltage across it continuously over a period ,which is possible with DC only
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what is load cell
Whether power factor should be high or low? Why?
Why Magnetic Core Balance test is performed only on Star side of Transformer and not on Delta Side of Transformer (Vector Group Dyn11)?
How many earthings are required for commissioning the Transformer?
what is phase angle ? and also tells me why my phase-phase voltages are 390 rather then my single phase voltages are 221 and 223 respectivly?
What is Anemometer used to measure?
1. What kVA rating is required for a transformer that must handle a maximum load current of 8 A with a secondary voltage of 2 kV?
what happens when back feeding supply accidently collapses with normal supply ??? How?? [that is sometimes in a substation 11kv feeder if their ws long time permit work, back feeding supply will provide from nearest substation... if accidently after the permit work,they charged the feeder without removing back feeding wat will happen...?]
Give some differences between open loop and closed loop control systems.
What are protection of power transformer?
air condition capacity for masjad having 50feet in circal and 35 feet high
how to calulate multiplying factor if meter ratio is /5 ampere and ct ratio is 100/5 ampere.(our supply is 3 phase 415 volts)what is multiply factor?
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