Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is master trip relay? How does it work?

1 4073

What is the difference between PLC & DCS?

1 1090

What is the instrument to check the rotating diode fuse of alternator in running conditions?

1064




why in dc generator field rheostate kept in maximum position?

1 2630

What is Harmonics how it is produced and what is the method to control the same

Siemens,

1095

Why dc voltage used to excite alternator field in stead of ac?

4 4488

why voltage rating of transformers are in multiples of 1.1?

3 3272

what should be distance between phase to phase in 415v system?

NTPC,

1 4097




can we correct the p.f.of ac generator?

APGenco,

2 3488

What is the effect of impedance on the heat losses in case of AC system??? Does heat losses really depends on the impedance or depends only on resistive component only..??

4 3057

In a poly phase circuit if clamp on meter shows same load on three phases and their sum on neutral then why we use three and a half core cable or maximum the same size of core as that of phase?

1 1860

how to determine kilowatts (real power) is used in energy meter? is it apparent power effect the disk rotation?

1 1882

When will you multiply and devide with derating factors to the actual value while sizing the cable?

781

why we are used armed coble for wiring of 3phase motor?

AluChem,

3 2961

how to improve my communication skills

Infosys, MAHINDRA, Wipro,

7 5373


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Un-Answered Questions { Electrical Engineering }

What is process of anneling transformer core

672


Transmission through a short line depends on

957


what is acceptable leakage current for 33kv cable while doing high voltage test for cable? how to calaulate the leakage current for 33kv or any rated cable?

2112


Why neutral is not used in three phases dol starter

723


HOW TO CHECK THE VECTOR GROUP OF A TRANSFORMER YD11?

2414






What is ignition module of a CAT Gas Genset G-3508 Engine, Alternator SR4B Series. HOw its checked for correct functioning.Is it repiarable or replacable?

1037


Whats the minimum value for I.R. that can be allowed for HT & LT alternators for operation?

2437


difine electrical ballast in HPSVL

828


what is 3rd Harmonics? how it is generated in alternator

6675


What will be in Mahagenco Trade Test Exam? I want to know the same.

2473


From reading, Under voltage relay used also as phase sequence relay now, Why I use under voltage and phase sequence relay in the same circuit (ATS)?

673


WHAT IS THE DIFFERENCE BETWEEN GENERAL INVERTER AND SOLOR INVERTER TELL ME PLZ

810


HOW MANY TYPES OF FUSE?

941


How to test REF relay testing for LV panel as per Kahramaa standard?

1276


what is meant by tranformer impedance?

1440