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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 74159

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

3 5482

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

2 3535

is earthing is necessary if we use armoured cable

1 3835

How can calculate thermal overload in relay?

1 3265

ful form of gis

2 3266

Explain Creepage Distance of Insulator


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


What is the meager?

6 18388

what is excitation/


how capacitor control the power factor/

2 4413

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 3959

what is meant by LT & HT?

5 8225

purpose of breaker contact multiplication relay?

5 19247

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

2 18396

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ABB Electrical Engineering Interview Questions

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