Electrical Engineering Interview Questions

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In a distribution system,having 3phases & 1 nuetral.ecah phase to neutral is 230V,line-line voltage is 440V,but what is the voltage of each line.but it should obey the KVL law.

why should we connect the no load components in a equivalent circuit of transformer in parallel?why cant it be in series.

hi friends this is a newcomer in your community of enthusiastic peoples. i am preparing for SSC (CPWD JUNIOE ENGG EXAM FOR ELECTRICAL) pls guide me on the same how to crack it? PLS LET ME KNOW IS ANYONE THERE WHO PASED IT? CAN I GET THE QUESTION PAPERS OF PREVIOUS EXAMINATIONS?

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Un-Answered Questions { Electrical Engineering }

I have 2 KW electric water heater.I am gonna use it in controlling water temp.so I needed to increase or decrease the heating capacity.is there any electrical-electronic circuit for varying the resistance & so current?

How CFL &T5 tube light glows?

3ph motor running with unequal kw and different pf what are the reasons

what is the principle of the single phase energy meter? and,what is the advantages and disadvantages of single phase energy meter?

how generator avr give to the input?

What are factors to be considered while we selecting the Core Balance Current Transformer for Earth fault protection

How to calculate the phase to phase clearness of HT /// LT bus bar?????

How to Decide the Location of Earth pit for Compressor in Oil Depo? and How to measure the resistance of earth pit Pls explain me with the help of Circuit Diagram?

How to calculate no of EARTH PIT? Describe the formula as per IS standard?

1- XC and the RC time constant are both measures of the reaction of C to a change in ____? 2-The power factor is a numerical ratio with a value between 0 and 1 equal to the ______________ of the phase angle. 3-When V and I are out of phase because of reactance, the product of V times I is called ______________ power 4-For _____________ inductors, the branch currents can be added algebraically. 5- The ______________ power in watts can be calculated as I^2R 6-Calculate XL with L = 30mH and f = 1kHz ( I have Xl=2piFL 2*3.141592653*1kHz*30mH =188 ohms Please check) 7-A parallel RL circuit has the values, R = 5kohms, XL = 5kohms. A voltage source of Vt = 10Vrms is connected in parallel to R and L. Determine the total current, It delivered by the voltage source Vt. 8-A series RC circuit has R = 1Mohm and C = 1microF. How long would it take for the capacitor to fully discharge if it is initially fully charged? 9-A circuit has real power = 300W and an apparent power of 500VA. Determine the power factor and phase angle. 10-The time constant for an LR series circuit is T = 0.1s and R = 10ohms. Calculate the inductance L.

why the voltage and current in a long transmission line are called travelling wave?

HOW TO CALLICULATE RESITENCE,REACTANCE AND IMPEDENCE VOLTGE OF TRANSFORMER 13.33 KVA 144/240 VOLTS 93/56 A WITH FORMULA

dg earth connect only in the amf panel or not why

What are the types of excitation system?

What is dynamo?How it works and what is the function of dynamo in a DG.