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Electrical Engineering Interview Questions

WHAT IS THE SPECIFICATIONS CONSIDERED DURING DESIGN FOR THE OVER CURRENT RELAY?

2772

why we use mostly 3-phase but not 4-phase and 5-phase what is the difference between them

1766

Why underground cables are used to connect transformers?In addition how are they again connected to lines after step up or step down?

2829

if the voltage across the lamp drops by 1%, the power drawn will be reduced by how many %?

18724

ohm's law is applicable to DC/AC/Both??

KPIT,

21541

The safest value of current which can pass from human body?

6345

is the power of a single phase induction motor(Fans) is constant under varying speeds?

3113

Why current leads the voltage in case of capacitor load? Why voltage leads the current in case of inductive load? Why both are with in phase in case of restive load?

TATA,

4798

apti mainly on logical reasoning, verbal and non-verbal ability (70 percent) and remaining technical. I was in ee but technical had mech ques like on turbines and welding.

TATA,

1315

what is power factor

3549

for preparation of design note of 11 / 220 kV , 3 phase, 63 MVA transformer how can calculate or consider the iron losses and copper losses

2341

what is the difference between rccb and elcb?

2958

Why is it that bus reactors are not accompanied by a neutral grounding reactor whereas a line shunt reactor is? PGCIL does so.

11018

Transformer rating=> 15/20 MVA.Why there are two raings? What should be the rating of the fuse at the secondary if the voltage level is 13.8KV/4.16KV?

Bhel,

5673

what is the reason for connecting hvdc monopolar line with negative conductors

984

Un-Answered Questions { Electrical Engineering }

Dear all, how we select the cable size according  to current with or without including different correction factor , is there any direct method for sizing of cable...

1267

What is the previous name of Cox's Bazar

1225

how to decide the panel size like MDB ,SMDB PANEL SIZES

6355

How can we checked Killo Watts of Motor & Alternator?

1228

Why we cant store an ac power. If we coo store in which device we can?

1271

Why star delta starter is preferred with induction motor?

234

Is the installation of the filter cloths necessary before spreading the gravels at the transformer yards?

1103

What are gain margin and phase margin?

285

Starting Time of LT & HT Motor

1059

What is bridge rectifier and explain with details

1104

how can check the resistance of battery contact?

1349

Explain forward resistance, static resistance and dynamic resistance of a pn junction diode.

244

can any tell me why slope 40% and 80% is calculated in differential protection?

1054

Explain what is use of lockout relay in ht voltage?

255

What are motor generator sets and explain the different ways the motor generator set can be used ?

254