Answer Posted / shiva13power

An AVR stands for automatic voltage regulator,it is used to
maintain the output terminal voltage of an alternator
constant by regulating the d.c excitation fed to the
generator.It regulates the output of pilot excitor which is
D.C.

explain comutator action in detail.thanks

2255

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A 400 V, 50 Hz, Δ connected synchronous generator has a field reactance of 0.1 Ω and armature resistance of 0.015 Ω. At full load, the machine supplies 1200 A at 0.8 pf lagging. Under full-load conditions, the friction and windage losses are 40 KW and the core losses are 30 KW. What is the machine’s overall efficiency? Ignore any field circuit losses.

1920

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I WANT TO know WHICH WAY IS BETTER FOR CONNECTION BETWEEN POWER TRANSFORMER AND MAIN DISTRIBUTION PANEL. 1-IS BETTER WE USE CABLE? 2-IS BETTER WE USE BUS DUCT? my transformer rate power is 2500KVA

3252

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How many wall/floor flange will i use in bus duct system if we have in our design a 35th floor building.

1497

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What is essential to prove safe isolation of electrical circuit?

1075

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Application Comparison between 22KV (UE)and 33KV (E) system. Are we allowed to use 33KV (E) cable in lieu of 22KV (UE) cable. What are the technical disadvantages.

2816

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Where burned of electricity,when,who, & why.

1984

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On Which Pressure PRV is operated.

1726

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What is the maximum and minimum rating of UPS?

1526

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I am a possesor of c licence from 1993. I forgot to renew during the year 1998. During that time I was working at TNEB to till date. Is there any possibility to get renewed? or to apply for a new one?

2040

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what is meant by vector group of a transformer? How can it be derived?

2007

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What is sensitivity of a measurement?

1139

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All tape of electrical questions Answers tape of motor transformer e.o.t crane

2657

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List of equipments required foe industrial repair lab.

1896

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how can you calculate fault level ?

2396

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