Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is the working principle of DC generator ?

HCL, DRDL,

10 12211

In zero voltage we can pass supply to our body means we cant get shock its true ? how we can do it ?

4 2485

what is the difference between brushed alternator ,brushless alternator & permanent alternator ?

1 21877




What is system earthing?what are the types?

ABB,

1 1681

why it is so called as xlpe(cross linked poly ethyline) cable?

834

How single phase & 3 phase motor select rotating direction ie clockwise/anticlockwise

DRJ ARDE,

6 5700

a 50hz motor to give 60hz whats happening in motor.what happen the motor.

6 4983

in Megger what type of voltage(AC or DC) are produce.how they work.

1 8053




An AC coil to give DC supply whats happen in the coil.what type of problem are create.

2 2765

An AC Motor to give DC supply what happen the motor.whats the problem are create.

2 2932

what type of motor are there in megger how they work.

2 2968

how to avoid electrical shock how capacitor store charges wat are the speed control of induction motors state faradays law flemings left hand rule what is rotary converter wat is transmission and distribution what are the sources of energy abrevation of acb,vcb,sf6,igbt what is output equation of transformer which test copper iron and iron loss are calculated what is eddy current draw a single line diagram (10 marks) draw direct online starter(10 marks)

729

phase colour is indicated by R Y B (red yellow blue) but in transformer i have seen U V W instead of (R Y B) have any meaning of this

Areva, Kim Yew,

3 15499

how to calculate the capacitor to maintain power factor?

Bosch,

861

What is expand formation of AYFY cable

HP,

2 2872


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Un-Answered Questions { Electrical Engineering }

is that any software calculator to calculate the size of cable

1067


what is the difference between switchgear and circuit breakers and is there any difference between outdoor and indoor switchgear and circuit breakers , and how would you differentiate between switch yard and substation and grid station . thanks

691


working of diesel generator ?

583


why power factor is important?

4892


how slip power recovery system work

1610






how to extend relay operating timing in 24V dc relay card (without using Timer )

673


how generator load test is conducted?what are the steps?

374


What are IP protections used for electrical panels, JB, equipments installed in explosive zones like Petrochemicals, Oil & gas

356


Can I use distributon class/transmission class Lightning arresots for protecting the building? If not why please explain?

669


Two liquids hot and cold in two vessels are there and an metal bar acts as a conductor of heat between the two vessels. what happens then. what happens after 24 hrs?

788


how to erect roof control panel?

757


The metal-enclosed switchgear and controlgear is subdivided into three types: 1. metal-clad switchgear and controlgear; 2. compartmented switchgear and controlgear 3. cubicle switchgear and controlgear. What is the main differnence between them. State some example.

799


Dear friends, i would like to know that what is the exact function of 'exciter winding' & 'aux winding' in Alternator?

682


What should be the height of basement according to NBCC code?

950


How does "OUT OF STEP" relay ,for Synchronous motor protection, work?

3014