Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what happen if the parallel generator phase angle shift by 1 degree in manual mode

EEEC, MEC,

985

critical losses of transformer

EEEC,

3 3688

what efficiency at 70% loaded transformer

EEEC,

1 1110

PLEASE SEND THE PREVIOUS YEARS QUESTION PAPERS OF RRB JUNIOR ENGINEER-ELECTRICAL

869

what is the difference between KW and KWh?

9 9383

what is rms value?

2 3751

does not the circulating current in a transformer affect the flux distribution in the transformer core

863

How can i calculate knee point voltage of 800/5A Current transformer?please explain me with suitable calculation?

2 8639

how do i work out the Amps of a incommer if i am running 1 37 KW motor and a 0,75 KW motor and some solinoids

921

What is the function of restraining coil in differential relay? as well as restraining current?

Siemens, Medical,

8 36331

A Generator is in running condition and Rotor earth fault alarm is coming.How to check on line(i.e in running condition) whether there is actual earth fault in rotor or not.

4 8476

what is the difference between STAR and DELTA connection and application wise how it can be utilizedd ???

1174

what is the breakdown voltage value in BDV test in transformers?

TATA, Siva,

6 30829

how to connect the three phase capacitor in three phase star/delta connection motor?

1 4371

please send privious years question papers of jindal steel and power ltd.My e mail id is rajanikant.sngh@gmail.com

Jindal,

1096


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Un-Answered Questions { Electrical Engineering }

Define Electrical Insulation and examples of Solid,Liquid and Gaseous insulating materials?

733


As we use capacitor bank in 3ph ckt to improve PF, can we use capacitor in single ph domestric use, in house we have Fan,Mixer,electric cooker,iron,tube choke they also lag the system,because it is inductive load. if it is possible to improve PF of single ph system-- if yes- type of capacitor to be used,connection diagram, working in detail. if no-- list it.

690


why you don not show protection and type of isolation in key single line diagram?

975


why servomotor motor? where i apply for best output?

1028


What happens to voltage when current is zero?

95






why 5kW motor becomes unbalance if its relay trip 1st time and its set value is 7.0 A

965


whats the application of voltage regulation? and whats the voltage regulation's device?

912


1. The DC generaror,s induced output emf is connected with a DC motor(as load). when increasing the load of the motor by using brake drum or any way. what are the parameters will changes in both motor and generator(voltage, current, resistance, frequency, speed, torque, power, flux etc...) 2. Similarly for AC generator and AC motor 3. similarly if using DC batteries instead of DC generator, What happens?

1083


how invertor convert the dc into ac give brif detail

1000


How delta connection in the primary of distribution transformer reduces harmonics?how delta connections reduces harmonics?Please answer me...Hope that question is correct.

1159


why generator efficiency is more in swinburnes test?

1183


what is meant by LCR meter? where its useful ?

1029


how to calculate the fault in substation

1110


is it necessary to earth the rmu before cutting off the transformer winding?if yes why?

876


What are :- AC Distribution Board (Single & Double Front) DC Distribution Boards Distribution Board LT Breaker Panel.

1085