| Other Electrical Engineering Interview Questions |
| |
| Question | Asked @ | Answers |
| |
| how does an energy meter works? | | 4 |
| Does RCCB do the job of MCB? Lets take 16A RCCB. it trips
when residual current exceeds 30mA. does it trip in an over
current situation, i.e when current exceeds 16A ?? | | 2 |
| Which type of power plant is more easier to produce electrical
power at economical condition? | HAL | 3 |
| Questions :-
HR-
Q.1 about yourself & family background ?
Q.2 Why u choose Power sector as ur carrier starting not any
other sector ??
Q. 3 What think abt NTPC ?
Techincal Questions:-
Q.1 about Vocational Training……What u did , see the main
equipments….etc
Q.2 Why a transformer Noise during its running condition ?
Q.3 about transformer oil material & Test name for the
measurement of its dielectric strength & wht will u do if
its dielectric strength goes low ? ……..some discussion type ?
Q.4 What is relation between transmission lines &
Communication lines ?
Q.5 Which Machine u will prefer to use at a place where
flammable gases are coming out & why ?
Q.6 how fault in an electric system is detected & hw
protection of equipments is done ?
Q.7 Why we didn’t feel electric shock in an electric train ??
Q.8 Anything u want to ask from us ??
| NTPC | 21 |
| If load is 240 kw & pf is 0.8 lagging, than how to increase
it from0.8 to 1.0(unit),which rating capacitor used, please
give me Calculation. What is effact of consumer & suplier
if pf is lagging or leading with on effect machines/ TF/GE
etc. | | 5 |
| what should be the megger test report for 11KV cable when
meggered with 5KV megger , what is the resistance value we
should get | | 3 |
| What is the diffrence between an ELCB(earth leakage circuit
breaker) and RCCB(residual current circuit breaker)?which
has higher degree of safety and why? | | 2 |
| what is the use of capacitor bands? | | 1 |
| As per IS why should the control be taken only from R
phase, why not from B or Y phase??!! | | 1 |
| why in three phase 440 circuit in all phase current is
almost equal L1-35 A,L2-34 A ,L3-31 A but in nutral when i
check with clamp meter it shows 25 A? | OPS | 2 |
| what is meant by leading or lagging power factor?like in
capacitor power factor is leading and in inductor power
factor is lagging | | 3 |
| what type of motor are there in megger how they work. | | 1 |
| Why should we use the igniter in the sodium vapour lamp.
| Delphi | 3 |
| what is the permissible bend in the LT& HT CABLES. | | 2 |
| How the starter control the starting current in three
phase AC Motor?(In DC apply the reistance). | | 4 |
| what is two wattmeter test | Jindal | 2 |
| What are the solutions for avioding sulfide formation at
bimetalic (Copper &Aluminium)overhead joints? | HAL | 2 |
| how to test generator protection rotor earth fault relay
and locked rotor test? | | 1 |
| why power factor occur only inductive load not in resistive ? | | 4 |
| what will be happen if we apply D.C supply to the
transformer | | 7 |
| |
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