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Electrical Engineering Interview Questions
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What is the effect on 3phase induction motor if current setting knob of DOL kept at minimum current?

 3136

Why the high starting current does not harm the low capacity induction motor?

 1 4231

Transformer how to maintaince a check b check c check d check

DIC India,

1515

Igfet is a

 1181

How Self works in DG set

 1396

how is control wiring coding is done in a CRP panel ?

Genus, Havells, Hindustan Power Projects,

1524

What is ideal IR values for ground and neutral.

Hindustan Power Projects,

1279

Hi, My question is our total motor load is 55 kw.so what cable size required for main supply. Please reply

Maryam Enterprises,

1 1976

i have ht transformer of 142 kva with air cooled facility,having secondary voltage 7850volt, and secondary connected full way bridge rectifier .i faced the problem repeatedly that transformer one coil and rectifier diode of two phase was burnt two times. i checked all the secondary ckt. no any short ckt found,then what will be the cause side

Modern Terry Towels,

2 2056

What type of changeover switch needed to run a load of five 1.5 tonn ACs.

 1 1887

wish of these transformer uses oil?

FJ International,

1159

how to check the continuity of a cable with a megger

Metro,

4 4050

My meter ratio is -/5 and ct ratio is 100/5 now what will be the multiplying factor and how ?

 1 1768

what is surge impedance loading?

 1 1800

in HT service 3ph 4 wire service Y-phase voltage shows zero . whether it is meter fault? or what be the reason ? if y-ph voltage zero ,can current is recorded? reasons for failure?

apspdcl,

1400

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Un-Answered Questions { Electrical Engineering }

what is the use of vcb & isolator in substation?

1873

how we find transformer capacity by ohm

1728

Graphs of measuring power and speed on dc motor

1442

How to calculate KVA/VA rating of PT or CT from primary & secondary voltage or primary & secondary current?

1971

Why power genaration in India is at 50HZ while America its 60HZ

1858




What is the meaning of dedicated earthing?

1521

Define the overload capacity of the motor?

1569

plz send me the syllabus or any sample paper for engineer trainee recruitment if any,on ravinder911@yahoo.com

1679

What is the diff. between single compression and double compression gland

1508

For refrigerators the motor current is raised beyond its rating on both conditions when the voltage of the system is more(say 270v) than the rated voltage(220v) as well as when the voltage of system is less(say 160v) than normal voltageof 220v, why explain?

1515

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

1899

How do i right a ladder diagram that has 1 actuator that performs a full stroke followed by a half stroke

1611

Why we use mho Relay in long transmission line?

939

can we use trip light with bus coupler?

1425

how line turns ratio changes in 3 phase with change in connection

1404

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