Answer Posted / jalapathi

if we gave a dc power to the IM winding it develops a non
variable magnetic field. bit motor does not run. bcoz there
is no relative motion between const mag field and rotor
conductor.

ex: dc solenoid coil
when we give dc power to the solenoid coil it will act as
magnet

how to calculate current and voltage in a same circuit?

2208

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In a carnot engine with an efficiency of 40%, the heat rejected to the sink at 27 C is 60 kJ, then the heat supplied in kJ to the engine by the sources is

1070

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Z transform is use when system is not a) converges b) diverges

1666

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I Just want do EHS Certified Certification Distance Course From Govt approved,so can any body provide me details.

2129

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If 22 KV HT line, Current transformer is 25/5 then how to calculate multiplying factor.

1087

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hr round

2124

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How to measure the earth resistance value in a concrete pavement(flood light area)?

2200

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If not into production, how far did you follow the design and why did not you see it into production?

2166

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What is the lower limit of break-down voltage of converter transformer.

1903

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What will happened if the neutral of the (star connected secondry) Xformer disconnected? (if its Above KVA rated one)

2156

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Usually in the L & T make MCC feeders' power circuit,we have BMR after the MAIN CONTACTOR.,can we interchange their position, keeping the control logic same???

2091

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What is ferro-resonance in electrical system? Why it occurs and what are measures to prevent it?

2222

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What size cable (based on voltage drop) is required to supply a 40 A three phase boiler if the wiring system is 75V single insulated cables installed in non-metallic rigid conduit 56m from the main switchboard? Voltage drop in the consumer's mains is 8V.

1967

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When can we take Neutral as common neutral link?

1654

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what is the operating time for LBB and how does the LBB relay realise whether cb is opened or not?

1974

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