Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

What is different between Difnit time and instatous over current relay

NCC,

2547

an amazing situation was faced when an alive distribution panel with 415 volts and carrying almost 200Amps has become short and this metal cubical showing 220 volts against neutral and earth. to redress any confusion i checked the panel with help of single 200watts test lamp which also glowing with max.intensity b/w neutral & metal body of DB. amazing situation is that i hold the DB firmly more than once with necked foot means without insulated shoes but not received any electrical shock. whereas our all running gen sets neutral points also proper grounded and this short DB was completely earthed , this is beyond my understanding . any body explain how is it possible . our running gen set neutral also grounded firmly

1 2449

is synchrnous pannel is need for two eqal rating transformers to run in parallel

1 3549

How to calculat the ratio of HT\LT in energy meter

2713

What is difference between SMC supportg and Glass Fibre Reinforced Plastic Support.

2341

what is the highest voltage for transmitting electrical power in india

5 8256

how rectifier transformer work in electroststic precipetatore(esp?

2651

how to calculate current carrying capacity in power cable?

1 5413

checking procedure of capacitor based motors.used in fans etc?

Badve,

2122

draw tube light circuit

Badve, KPTL,

2274

I have a 5KVA UPS. Total load to be connected almost 3KW. Ordering a battery pack with capacity of 1920VAh. How long will the backup time be?

1 4080

why in a transformer frequency remains constant? if frequency is changing what will happen?

5 23447

SUTIABLE FOR ohm's law super conductor

1953

if the synchronizing b/w generator and busbar not complete and we close the out going circuit breaker of generator then what happen ?

4 5522

diffrence between windings of high tension side and low tension side of transformer

1 10963

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Un-Answered Questions { Electrical Engineering }

What is the need of generator relay panel

2099

# 4 hi friends i m from electrical branch and seeking for tech. + apti. both papers of hpcl plz get it available as soon as possible my email id is sumit_lig189@yahoo.co.in

2003

What will be the voltage impact on secondary side of two transformers with different vector groups when both voltages are compared.

2003

why is control bus bi-directional?

2166

for 5KW resistive load can anyone please suggest me whether to go for UPS/Inverter or Generator depending upon cost calulations

2087

what is Fan Control Cubicle

2484

hello!my name is sheikh iam preparing for indian engineering servieces,please send me the old question papers..to sheikhshaazforjobs@gmail.com

2084

I want to know how to calculate the size of electricity cable in building?

2016

how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING) I O (current operating)?

2209

IF % IMPEDANCE OF A TRANSFORMER IS INCREASED FROM 5.8% TO 8% HOW MUCH THE EFFICIENCY OF THE TRANSFORMER WILL COME DOWN?

2374

In the magnetic fluxes, what is the role of armature reaction?

1158

What is reactive power and where it is used.

1696

what is the acceptable limit value for Desolve Gas Analysis/

1986

sir plz send some previous year questions of jspl.

1936

what happens if dc supply is given and the remedies for it.

1821

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