Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

what is the vvvf in the dumbwaiter?? or lift. what is the actual process?/

2049

what is motor?

UIU,

2 5754

what happens if you swap F1 and F2 connection in the exiter of the generator?

1 3536

TNC switch is also available in 1NO+1NC. What does it mean ?

1 6805

What is a variable speed motor?

3 6435

what happens if we give 1-ph supply for 3-ph Bridge rectifier...??

Sanelec,

2 6731

Please mention any books for electrical design load calculation for industrial,commercial(to select cable,breaker,bus bar,stator,)

C&S,

1 3146

Transformer calculation

Aramco, LMW Lakshmi Machine Works Limited,

1 7400

why the voltage and current in a long transmission line are called travelling wave?

UIU,

2184

for 4 MVA , 33K.V/6.6K.V transformer. secondary side the connected load is 3000H.P. What is the rating of capacitor bank to be insttaled.

SCCL,

2539

which of the following elements is not present in stainless steel

LASA,

2496

What is voltage

4 9038

what is protections used for 6.6kv ht motor

OEG,

2 4440

how to select electrical equipment such as fuse,dg,transformer,motor,msb,wire,cable as per the connecting load..please mention any books to design,take licence

Gujarat Electricity Board,

2948

In TNC switch, is there any 1NO+1NC block ? and if we move over closing position, is ther any affect on trip position or vice versa?

2200

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Un-Answered Questions { Electrical Engineering }

what is the difference between an alternator and a synchronous motor

1977

I just purchased a 4 position cam switch to be used to operate a 3-speed blower motor. The motor is a 10 amp motor and has 3 wires that are used to control speed. The cam switch was rated at 660V 20 amps but when I received it, I noticed that it has AC-15 operational current rating (Ie) of 4/5 amps. If I am reading the label correctly. the 4/5 amps is related to 440v/220V (Ue). Other ratings are AC-3: 5.5A, AC2: 7.5A and AC-4: 1.5A. My questions are 1) Is it safe to use this switch with the motor I have 2) what is the difference between the 20 amp Ith ratting and the Ie operational ratings?

1700

what is the Transformer Impedence?How can calculate?

2037

How should i design a 1ph & 3 ph transformer. Kindly let meknow all steps and formulaes related to design from scratch.

1956

I had applied for JE in PSEB, Can you pls send me the Question bank for related to my field

1826

Why choke coil is connected in series with starter in tubelight??why starter is connected in parallel to tubelight??

3335

Write a note on materials used as a fuse element.

2086

What range of speed can you get with the field control method of speed control of d.c. Shunt motor?

1108

How does HT work & Voltage required?

2216

upto how much low RPM we will run the commercial motor which is run through VFD without any problem occurs in motor.Motor rating Duty is S1 & RPM is 1400.

2100

in conventional fan regulators how the current varies with speed?

1945

i need list of swg(standard wire guage) or area of conductor v/s current carrying capacity of conductor copper & alluminium...

1779

how will calculate the safe starting current of 3-phase squirrel cage induction motor?

1878

what are the applications of transistors with low dc gain, high dc gain and medium dc gain( beta)?

1727

what are the breakdown voltage rating of mini- curcuit'transfarmer!

2129

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