Electrical Engineering Interview Questions

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I have a 33 KV sub stn with two mother transformers 33/11 KV of capacity 3150 and 1600 KVA respectively. The total connected load 16809 KVA(11/0.433KV).how i calculate the max current & how i decided the CMD.

What is the rate of WCT on the Electrical Contracts comprising of DG Sets and Civil Works in Delhi ?

1715eddy current losses depends on?(a-max magnetic feild,b-avg magnetic feild,c-on frequency,d-on square of frequency)?

Ecil,

For small size, high frequency coils, the most common core material is- a. )Air b. )Ferrite c.) Powdered ion d.) Steel

Ecil,

2616Sparking occur when a load is switched off because the circuit has high – a.) Inductance b.) Capacitance c.) Resistance d.) None

Ecil,

can we start slipring motor on star delta like we start induction motor ? if yes where will we connect ?

1580VCB in closed position during opertion if vaccume break then what will happend? it has any protection ?

For Eg a 30 kw motor at full load how much kw it takes And at no load how much KW it will take?

GEPL,

For an induction motor wat is the loading/unloading cycle duration or interms of L/UL ratio/ percentage?

GEPL,

1666Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

how to introduce yourself

What will be the impact on motor performance if a LT motor is rewound with changed motor winding data as given below:- Original winding data: total 04 wires = 02 wires of 17 SWG + 02 wires of 16.5 SWG. Changed Winding data: total 03 wires of 15.5 SWG wire size Motor rating: 160KW, 740RPM, 415V, ID FAN application. Normal Running Current = 95% of FL Current.

What is star-delta transformer?

Discuss about gear cutting machines.

The magnitude of sum of two sinusoidal av voltage is equal to 230 volt.the magnitude of each individual voltage is also equal to 230 volt.what must be the phase difference between voltages?

how much cable size required for 70 kilowatt load.

What is the function of retrip in busbar?

what is the role and fuction of automatic transfer switch in rotary ups

what is the star delta connetion and how can do it a three phase motor with control witing with picture

which pump used in STP

Role of active and reactive Power sharing in between two synchronized Generators, Droop Setting role ?

What is the complete procedure of erection of electrical panel in industry

what is the Transformer Impedence?How can calculate?

WHAT IS THE CURRENT CARRYING CAPACITY OF 2.5/3 CORE HI TUFF CABLE,WILL IT SAFLEY CARRY 8.6 AMPS OVER 120 METRES,CAN YOU ALSO ANSWER WITH FORMULA FOR WORKINGS OUT ,THANK YOU 3RDYR APPRENTICE.

th how could we differentiate between armoured copper and armoured aluminium cable what is the basic application? why we prefer the armoured copper as compared to armoured aluminium.