Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is the function of Moulded case circuit breaker, why it is called Moulded?

976

Why soda is added with water in Lrs of Sliipring motor…to Increase or decrease resistance of water?

1 3698

What's the difference between non break power supply and non break non short break power supply

1017

What is the lockout relay

1056

What is the test block protection relay if any body know plz explained

1005

Can a generator runs after getting 1st stator earth fault.

945

how to difference between the HT< cables

L&T,

1 1929

How work of capacitor in dc supply...???

1035

can anyone explain the star-delta motor control wiring ,which wire go where and how they operate?

939

what will happen when the dc supply is given to the capacitor?

998

how to calculate the current carring capacity of the conductor

1 1539

What is the function of retrip in busbar?

Getco,

1073

what is the disadvantages of common earthing for AC and DC equipment? (i am talking about inverter control room and inverter duty transformer earthing is common...?)

TATA,

1173

what are the tests comes under the type test, what tests comes under routine tests.

1021

what is the calculation formula for motor starting torque,running torque, running torque.

1214


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

I PURCHASED A DEISEL GENARATOR SET OF AVR TYPE& RATING 125KVA BUT SOME TIMES THE OUTPUT VOLTAGE IS FLUCTUATING WHAT ARE THE PROBABLE REASONS GIVE ME

1400


1. What is maximum permissible distance between smoke detectors ? 2. How do we decide number of smoke detectors required in a large office, warehouse, hall etc ? 3. What should be maximum height of smoke detectors ? 4. Where do we use heat detector, optical smoke detector, temperature sensitive detector ?

2372


I have 2500KVA transformer delta/star,13.8KV/380V provided with LV 4000A breaker. Already I have 2300KW motor feeder with a full load 90%. Is it possible to connect another 1600A from that breaker? If so how the calculation is done?

3360


explain supply side and demand side energy management with advantages & disadvantages

1671


my bachelors was done with EEE now i got admit in NU with CS as course. how to answer this qns 1) why u choose cs? 2) why u changed from eee to cs

1266






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

1712


when the Transmission and Distribution network where is the "feeder" lines are located? and why should be used in T&D network.....

1251


how to find the multiplication factor for digital energy meter and analog energy meter

1758


what is difference between window type and wound type transformers?where we will use window type and wound type transformers?

1718


What are the major reasons for balancing hydro-thermal mix?

676


I would like to know that the fault curretn at base load and at 10% generation will be same? Fault level of BUS remain same with different generation?

1376


calculate external resistance values to add to the rotor of a slip ring induction motor. STATOR- 415 V, 3 phase delta, 1100 A, 50 Hz, 1490 rpm, pf 0,86 ROTOR - 660 V, 590 A, 50 Hz. STATOR current at each steps STEP1-600A,STEP2- 800A,STEP3-1000A,STEP4-1100A.

3056


What is dielectric loss?

637


what is the maximum permissible limit value of leakage current and leakage counter reading to replace lightining arrester?

4619


draw the block diagram of fire alarm?

4976