Interview Question for Elecrical

Some time we Thinking That "What Question Ask in interview And College test

Below Some Questions Given

1) How Transformar Work?
2) What diferce between "Current" And "Voltage"?
3) Principal Of Newton?
4) How Induction Motor Work?
5) Types Of Circuit Breaker?
6) Working Funtion Of SF6 Circuit Breaker?
7) Types of Wiring Used In Home?
8) Types of Wiring Used In Industrial?
9) Types of Transmition Line?
10) Draw the Diagram for Trasmition Line.

Coming Soon For More
And Ansew the Question.

Punch Point In Telecom For Elecrical {PART-2}

In Part-1 We Show Some Punch point In this we Know more Punch point.

Lets Know Following More Punch point

11) Battery Bank not grouted in Battery chiller (Shelter 1X1)
12) SMPS MCB (Y & B phase MCB) short by 10 sq mm instead of 16 sqmm & lugs not used.
13) Ac cut out not sealed properly.
14) Air gap found in shelter cut out below AC unit
15) DG automation not complete.
16) Earth chamber not found
17) EB Power MCCB 63 A used instead of 100 A.
18) AC Foundation otta plaster work not completed
19) Poll Mount not installed
20) Feature Expendable Ac MCB (ACDB-DCDB) supply cable connection not done.
21) OD cable trey grouting not done properly (pedestal done on ground level)
22) light & plug point cable connected with out lugs & Joint found in cable
23) Joint found in light & plug point cable.
24) Shelter cable entry hole not sealed.
25) Shelter (PIU) cable entry not sealed
26) SMPS  MCB not working properly (80 A DC load MCB).
27) oint found in B cooler (AC)cable.
28) Remark :- LFL alarm not working ( Old DG)
29) SFU not installed.
30) Roxtec not available.

More Punch point See Part-3

Punch Point In Telecom For Elecrical {PART-1}

In Telecom Elecrical Punch point found.
Following Are Punchpoint.
1) Door Seanser Not Working.
2) Battery Chiller grouting not done properly.
3) grouting not done properly.
4) Cage Cable Tray not fixed with the cage panel With screwed.
5) Y-B Link not Connect In SMPS Supply MCB.
6) Padestal not found for HCT support.
7) DG Not work in auto mode .
8) PIU Automation not completed.
9) DG fuel sensor not found, So fuel alarm not check.
10) LLOP, HCT/HWT, LFL Alarm not working in DG.

Electrical interview Question @ Answers.

Question 1 ):- What Is The difference between Isolator and Circuit Breaker?

Answers ):-    Isolator is a off load Device which is used for isolating the downstream circuits from Upstream circuits for the reason of any maintenace on downstream circuit.It is manually operated and does not contain any solenoid unlike circuit breaker. it should not be operated while it is having load.First the load on it must be made zero and then it can safely operated. it Specification only rated current  given.But circuit Breaker is onload automaticdevice used for breaking the circuit in case of abnormal condition like short circuit , Over load etc., It is three specification 1 is rated current and 2 short circuit breaking capacity And 3 is instantantneos tripping current.


Question 2 ):- Why In Earth Pin Is Big Than Other In (Power)plug Socket?

Answers ):-  Because Device Short Circuit Current  Direct Grounded.
                     Device Not Damage.


Question 3 ):-  Tell Me How Many Types Of  Earthing?

Answers ):-   Follwing Are Earthing Types. There are many types of earthing.
                    1)Piepe Earthing
                    2)Plate Earthing.
                    3)Chemical Earthing.
                    4)Spring Earthing.
What is the difnd Circuit Breaker?

Question  4 ):-  Write Types Of Circuit Breaker?

Answers ):-    Follwing Are Types Of Circuit Breaker.
                      1) Oil Circuit Breaker
                      2) Air Blast Circuit Breaker
                      3) Sulphur Hyxoflouride (SF6)Circuit Breaker
                      4) Vacuum Circuit Breaker

 Question  5 ):-   Continue...