Electrical Engineering Interview Questions
Questions Answers Views Company eMail

A 2083kva AVR was tested, phase to ground shows continuity, what is the implications

501

Types of circuit breaker

1 809

Different types of relay fault which phase sequence??

457

If 22 KV HT line, Current transformer is 25/5 then how to calculate multiplying factor.

592

how to compare with Relay settings for HT< panels, RMU panel, and PSS CSS transformer?? 1) Load amps, 2)Tripping time, 3) CT ratio, 4)Cable size 5) Transformer KVA rating 6) transformer full load amps

712

how to setting Load amps tripping time and extra settings for load Transformer protection relay with RMU panel using C&S model relay..?

574

In Air circuit breaker LSIG protection unit is used. Without fault in cables (2 runs 3Cx150Sq.mm Copper, 1Kv grade, XPLE armored cable IR value is more than 550Mohm @ 500V Megger) and load section Long time Overcurrent protection is triggers and trips the unit. We changed LSIG protection with new factory tested unit. Even then fault is persisting. Please suggest the possible causes

345

how to revers the direction of single phase motor

458

How much voltage we need to apply in 33kv cable during hipot test of cable

389

An impedance of 100 ohms resistance and an unknown inductance is connected across the capacitor. The resulting impedance is a pure resistance of 500 ohms ifω = 10^5 rad/sec. calculate the values of inductor and capacitor.

706

Slipring moter find external resistance

1 549

tell me about your project

1 696

Interchange 7 and 6 ,÷and× 36×7+4-7×3

1 685

Why GRR starts from 60% of motor speed why not less than 60%?

704

How to test transformer

1 649


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Un-Answered Questions { Electrical Engineering }

Do you need any help with FEWA Electrical Supervisor exams?

530


What is the rotor frequency of 10 Hp 1440 RPM 50HZ 415V ?

1538


What is notching in dc machine?

1490


What is nichols chart?

758


What is ideal IR values for ground and neutral.

1279






what happen as when voltage drop(or may decrease) ? in case of atomic base theory?

1532


what are the Alarm, Trip & Safety equipment (Issues) present in Power Transformers pls Mail it to ashokbabunhce@gmail.com

1442


can we synchronize star system generators with delta system generators?

1435


How to select, design,size & calculate for 11 KV/33KV/66KV/132KV/220 KV/440 KV circuit breaker for HT side of transformer protection/HT distribution protection?

2276


how to calculate maximum current

1722


3 phase Motor will be given 2 phase after 2 to 5 second we given 3rd phase so Motor Run sum-time in forward or sum time run reverse direction. All time phase sequence is not change. Why motor run in reverse direction? Please Explain........

1470


How you calculate the repturing capacity of a HRC fuse

2089


A 3-phase IM is supplied from 50 Hz system. It runs at speed of 1440 rpm and slip equal to 4 %. Calculate number of pole pairs. A 1 B 6 C 2 D 3

1564


What is magneto on a gas generator. how it functions. its out put is d.c or a.c. how it can be checked for correct functioning

1407


What current flows in the transformer primary when its secondary is open?

624