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Electrical Engineering Interview Questions

why the desirable efficiency for a motor is 60%, but in case of transformer, it is above 90%?

2604

how to calculate Amp, 2 different Amp of batteries? Example: No. of Batteries = 2 Battery voltage = 12V 1st Battery rating = 17AH 2nd battery rating = 30AH between parallel connection then output volt 12v Amp?

3668

Can we use droop CT in neutral in place of W phase of alternator ?

3597

what is the earth resistance

4607

For 6600/433 distribution transformer we apply secondary side 433 volts how much voltage in primary side.

3130

how can calculation ate Amps for cabel. Ex-for 1sqmm wire hou many amps we can draw

1619

can u tell the difference between star-star transformer and delta to delta transformer.

3618

what is rating boiler

1153

expansion of rccb

3428

What is the intent of short circuit studies?

3308

how and why are capacitors are used to improve powerfactor?

4354

why do we use star-delta starter. what is its need?

45745

whenewher three phase supply is given to induction motors revolving/rotating field is created & rotor rotates.When the three phase supply is given to three phase transformer then revolving,/rotating field is created or not? if not why?

2120

how could we findout the lightning arrester failed or not in live circuit? Is there any instrument to measure the high voltage at the time of sky lighting?

2698

ELECtrical

3247

Un-Answered Questions { Electrical Engineering }

how can motor both beasrings insulation resistance can be check?

1136

How to Calculate Current Rating of SDFU (Switch Disconnector Fuse unit) for Protectionof Capacitor Bank connected to Busbar of 800Amp,in LV side of 11/0.433KV, 250KVA Transformer?

4007

How can we increase fuel-power ratio of any DG set?

958

What is the purpose of stand by earth fault protection for transformer ?

1145

How to minimize the eddy current losses?

222

what are the values of VRY,VYB,VBR,Vry,Vyb,Vbr,Vrn,Vyn,Vbn for Magenetic balance test of 100 KVA and 63 KVA Distribution transformer

1711

what is the effect of earth on capacitance in 3-phase and 1- phase transmission line?

1498

what are the advantage and dis-advantage of 3 phase 4 wire energy meter?

1079

what should be correct gas pressures to be a 1.5 ac unite

712

How you calculating the 30 Hp 3 phase AC motor of power what size of cable is used for this motor?

777

why capacitance effect is predominant in underground cable transmission and inductance effect is predominant in over head line transmission?

2756

Difference between control junction box (cjb) and power junction box(pjb)?

1440

how to carried out tan delta test in 11 KV alternator ?

2069

ITI r/tv trade APPLY (J.T.O VACANCEY) ALSO INCLUD AITT ELECTRONIC,WRITEEN XAM DONE 23.03.10 BUT NO RESPONCE WHY ANATHER ID gopal_gh007@rediffmail.com

2471

sir, iam a electrical engg graduate and i want to go in automation sector and for this i have decided to do industrial training for this,plz suggest me some good institute for the same in delhi,ncr. my degree percentage is 58%, can i get job after doing training, plz help....

1177