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ABB Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is the function of a Master trip relay? why is it used ?

5 72480

what are different type of triping equipmen like MCB,MCCB and their differences

 3 5172

Who we calculate the generator NGR resistant, generator voltage 11 KV ?

 2 3328

is earthing is necessary if we use armoured cable

 1 3610

How can calculate thermal overload in relay?

 1 3077




ful form of gis

 2 3017

Explain Creepage Distance of Insulator

 1120

How to calibrate or test an LT Air Circuit breaker 440 volts, 35 KA, 800 Amps ?

 886

What is the meager?

 6 17568

what is excitation/

 1000

how capacitor control the power factor/

 2 4175

I have two power supply.a)govt. power b)Captive power.3 phase load connected inside factory.when source change govt. source to captive some motor rotate reverse. Is phase sequence changes when if off & on?If I off generator & on it again is it possible to get changed phase sequence??

 4 3612

what is meant by LT & HT?

 5 7660

purpose of breaker contact multiplication relay?

 5 17750

what is post close & pre close of trip circuit supervision relay in circuit breaker control scheme?

 2 17583

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ABB Electrical Engineering Interview Questions





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