Answer / naveen

coulomb

What is the effect of impedance on the heat losses in case of AC system??? Does heat losses really depends on the impedance or depends only on resistive component only..??

4 Answers  

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sir i applied for hpcl(electrical).i want to know from which subjects most of the technical que will b asked.and pattern of the written test.pls help me

0 Answers   HPCL,

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How to decide and select the different earthing wire size for the different types of earthing

0 Answers   Suzlon,

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if power factor comes in leading & showing -0.95. Is there any effect on electrical system? if yes, then please tell me what would be the effects. & how long we keep power factor in leading. Keeping power factor in leading shows more KW & less KVA is it correct or not.

2 Answers   Jakson,

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what is elevation lamp?where its used?

2 Answers   Essar,

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What is an Antipumping relay ?

4 Answers  

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What Normal(Tangent) towers and Tension(Cut-point) Towers?

1 Answers   ABB, BGR Energy, NTPC, Powermec,

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there are a transformer and a motor. both are connected to 3phase, 415 Volt, 50Hz power supply. Both are working with induction principles. Then, why, motor is rotating and transformer is not rotating.

8 Answers  

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In the Variable Voltage Variable Frequency Drive, how the Voltage and Frequency varied ? Is it varied in the Inverter part of the Drive ? Please give us supporting document if any.

0 Answers  

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how define the torque in ac drive. from electrical side in the drive friquency ,voltage and current three factor is there.

0 Answers  

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Post possible questions for Power Factor Panel FAT / SAT

0 Answers  

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Explain cos(theta) and Sin(theta)

0 Answers  

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