Electrical Engineering Interview Questions
Questions Answers Views Company eMail

For my plant the electricity department charging some amount for t/f losses. May i know what are transformer losses

L&T,

1 2801

how to find motors H.P. whout any rating? (only give you a motor and multimeter)

L&T,

3 4721

In sub-station how to find multifactor of panel?

1 2671

the process cynide is used for?

MAHINDRA,

2 3602

fog produced due to?

MAHINDRA,

2 3533

cc of scorpio?

MAHINDRA,

1746

refrigeration cycle?

MAHINDRA, Shapoorji Pallonji Group(SPCL),

1 4204

what is the saturation point of crgo lamination.

1620

why substation are rated like 11KV or 33KV?

TNEB Tamil Nadu Electricity Board,

3 10267

how a DC clampmeter works if DC cant b step up r down?

1 2766

Phase control and integral control are used for?

NPCIL,

1750

What is the gain of 1-s/1=s at 1 rad/sec?

NPCIL,

3 5922

why does make gain margin and phase margin on same plot.?

1611

Q-1 what are the structural and operational difference between a distribution and a power transformer? Q-2 what is skew in motors? Q-3 draw equivalent circuit of transformer Q-4 explain with phasors how pf is improved with loading in induction motors Q-5 DIFFERENT METHODS OF CABLE LAYING(interviewer asked if i heard new chemical based earthing system next) Q-6 pi model of medium length trans line Q-7 v/f control?why Q-8 vacuum circuit breaker operates in?

Vijai Electricals,

1 4443

What will happen if apply dc source for power transformer

4 4959


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Un-Answered Questions { Electrical Engineering }

why Current is lead 90 degree and voltage is lag 90 degree in a capacitor.? why Current is lag 90 degree and voltage is lead 90 degree in an inductor.?

1758


How many devices can be connected in one zone of FACP

1768


explain the process of commutation in a dc machine. Explain what are inter-poles and why they are required in a dc machine.

664


Draw the vector diagramme for Asynchronous Induction Generator at noload,half load and fullload.

1449


how load of a turbo generator can be increased

1448






What is the function of the generator exciter?

899


What are the parts in a inverter?

1540


What is the difference between diode and a transistor in terms of the direction of current flow?

1655


what is power factor ? how we can calculate the low power factor and amount of capacitor for improve that low factor ?

1063


During underground cabling in landscape area what did we cover the cable with to prevent the electric shock & protect the cable?

1387


Do inductive loads have distorted current waveforms ?

1367


how to find number of run cable laying[LT side] for transformer & alternator secondary side? [above condition for getting output power transformer to main panel side] give the example.

1573


what do you mean by class PS CT and what are technical details needed for calculating it?

1494


how are reversing the direction of dc motor

1173


what is the main function of capacitors in mccs.

1245