Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Why the arms of delta in a delta-wye power transmission system are kept constant??

1403

What are the test performed on A faulty transformer ?

Bhel,

2 4781

In generally how many earthing required for power

4 5529

why is the transmission voltage is multiple of 11?

HAL,

1 4588

why is the transmission voltage is multiple of 11?

4 6100

Why don't we use ground free electricity to avoid electric shock.As birds are do not get shock.

3 4080

what is difference between neutral and earth

HP,

5 8286

why we maintain 50hz ,220volts,20Amp,ratings fixed every where in india,,electricity

1 3957

why in US MAINTAIN 60hz,110volts when compared with 50hz,220v in india

2 4817

How to measure the capacity/rating of a distribution transformer in KVA?

1616

is the secondary voltage of current transformer greater than primary voltage,,,,,,,,] give the example with ct burden,current ratio,and primary and secondary side voltage?

2 4307

why ohms law does not obey semi-conducters?

2 13882

What is the range of efficiency of thermal or steam power plants? Why it is so low?

2 7395

What value(high/low) of diversity factor is desired in power system and why? How such value is achieved?

1 9154

What is Co-generation in the context of electrical power systems?

1 2909


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Un-Answered Questions { Electrical Engineering }

If I want to replace a 26KW Slip ring Motor with a Squirrel Cage motor & Drive (for a Hoist Application). How can I approximate the Motor & Drive HP required in new Setup.

1808


Explain dc generator with its types?

626


how can tell us the AC indoor or outdoor which Tr and formulls

1301


What is transformation ratio what it describes?

1159


When we connect the large capacitor bank in series ?

606






As per standard, transformer body earthing and other Equipment earthing (Equipment earthing) did not connect. but in LT side termination we are doing metal glanding in both side Transformer to PCC Panel through armoured cable, now X'mer body earthing and PCC Pane earthing (Equipment earthing) both are connect.is this safe for X'mer or other equipment?

1183


How each of the following losses occur in d.c machines (i) copper (2)core (3) windage (4)friction please help me

1580


how many types of motor can be used in washing machine

1676


how we can do the insulation on secondary of ct explain and so that tan delta will within limit

1440


what is the difference between torque induced and torque load?compare them with respect to dc motor?

1571


What are the classifications of heating element?

1508


Explain about Leakage Test.

1441


How Can I calculate for the photometrics requirements for a street lighting? Data given are: 45 units of 6 meter light pole with 150 watts metal halide lamp, 220 volts and installed in a promenade area.

1410


why is using sensor?what is differece between photoelectric and proxmitty?

1512


Scott connection is used for A 3-phase to 2-phase conversion B to achieve higher effciency C to save copper D to reduce harmonics

1859