how did the differential relay work to protect the power transformer

4 Answers  

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A ceiling fan moves Counter clockwise & a pedestal fan clockwise.....y the difference????

5 Answers   Alstom, NTPC,

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What is a single phase autotransformer?

0 Answers  

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1 kva how much amps? How to calculate ?

2 Answers   L&T,

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what is rating providing of contactor,relay,fuse unit for motor output power

2 Answers  

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when we megger is not damaged when we are measuring very low resistance? high d.c. voltage is produced in megger so according to i=V/R. current will be high so what is the reason ?

1 Answers  

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what is the differance between HT motors And LT MOTORS.

0 Answers   Empire Vitrum Glass, Sappi,

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What are formula we can apply to determine the HT/LT current of 11KV/433V transformer except KVA/LV×√3. ?

2 Answers  

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what is meant by impulse voltage?

0 Answers   Masseera,

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what is load cell? whrere its used ? how to measured?

2 Answers   Essar,

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KVAR Kilovolt-Ampere-Reactance

2 Answers  

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if you asked to choose a ckt breaker from MCB & MCCB for 32A which one will be best and why??

7 Answers  

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