Answer / pritish

when 1 phase ac supply is given to the field of an alternator, it produces statically induced emf and dynamically produced emf as a result, the net torque will be zero and it produces hunting in the rotor. hence there is no output as the net torque is zero.

how fault in an electric system is detected & hw protection of equipments is done ?

6 Answers   NTPC, RLY,

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I want to calculate how much capacitor we connect to maintain the unity power factor? Is there any formula? Pls give me the answer

0 Answers  

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If Polarization index of motor 8.75 at 500volts of medium voltage 4.16 KV motor what this mean winding good or bad pl answer if any reffrence book give me the link

0 Answers   Marafiq,

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Can 2 nos. of 1 ton split ac be used through a 20 am supply meter?

3 Answers  

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what is the difference between ac and dc?

1 Answers  

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In a power conditoining unit (inverter) of a solar plant when we measure the d.c. current fed by different strings of solar plates to inverter, the current in the negative wire is less almost by 1 ampere to the current in its positive wire say current in positive wire 5 A , then current in negative wire of the same string is 4 A. Since the current entering should be equal to current leaving then why the current is noticably less in negative wire.

0 Answers  

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In power generator sets, when they are coverted from 50hz to 60hz, the kva rating after conversion increases. For example, the manufacturer of a perkins 200kva @ 50Hz generator set has mentioned it to become 220kva after converstion to 60hz. What is the relation between the frequency & the KVA rating. Any formula please.

3 Answers  

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Why hydropower stations are preferred solution for meeting peak loads in grids?

0 Answers  

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how to test reverse power trip?

0 Answers  

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working of a diesel generator.

34 Answers   ABC, AC, Cognizant, CTS, Directorate of Lighthouses and Lightships, KSL, Quippo, Shree Renuka Sugars, SRF, Svam Power, Tech Mahindra,

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Hi All, I am working as a Technical executive in a MNC company and we have 1500KVA & 1250KVA T/F in our site, can you help me that how many maintenance tests can be conducted and what are the procedures included for the tests can you share yours answers and also give any web address to get more information on this

5 Answers   Hyundai,

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transformer 3 ph, 225 kva pri 480v, sec 208v. primary neutral connected to system, is secondary neutral to be grounded and how

1 Answers  

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