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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

IN CONTROL SYSTEMS Y WE NEED TO KNOW THE STABILITY OF THE SYSTEM?WHAT IS ITS PRACTICAL USE?

2 7346

how to measure the dc current?

3 5213

what is relay type VDG,CDG,VTT ect?

Bhel,

1 10516

how to measure dc earth leakage current?

2123

What is the diffrence in between Class PS & Class 5P10 for CTs

7 7076

how many units (kwh) are there if in one MW?

5 11254

What will happen if twice the rated voltage is applied to a DC motor?

Toyota,

4 8697

what is the interrelation between voltage current torgue speed and magnetic flux in case of different types of electric motors

1083

how to calculate the load on transformer..????

Bhel,

2 4266

What is transposition in a transmision line?

2 8738

As per BIS, Earth pit resistence value?

4 6633

can v use earth as nutral. yes than y.if not y.

3 4156

how convert kvar to microfarade? circuit diagram of infrared transmiter and receiver? circuit diagram of Fm transmiter and receiver?

2 3853

how can i improve the power factor in domestic (230v)

Epcos,

1088

How to measure power in 2 or 4 or n phase circuit? Please give me a formula.

1040


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Un-Answered Questions { Electrical Engineering }

sir,in our plant we r using SATEC PM172E power reading meeters in HT panel side it is monitoring the MB data smart viewer(sever).but last one week we did not get readings inthe server only available in meeter.tell me how communicate meter and server. and also what steps we take for checking.

1239


Write down the brushes of a de machine.

1041


what is PDU in transformer?? which company manufacture??

935


what is the basic need of domestic loads 1- voltage 2- current

1037


what is interpose? where it is used and why it is used?

204






what is self capacitance of inductor

1359


What is CCM in Electrical ? where can we use this material?

459


Please explain the following and how these are working with PLC unit 1.I/O Module 2.I/O Device 3.Adaptor Card 4.Ribbon Adaptor 5.RS 485-FC

717


List advantges of active filter over passive filter?

201


If we impress a dc voltage of 230 V on an unloaded 230 V, 50 Hz transformer it wi A give high secondary voltage B burn out C give secondary voltage as per K D none of these

1022


Name a govt approved university which have 100% online engineering course.

880


how to measure dc earth leakage current?

2123


1. A 380 / 220 V r.m.s. 3-phase 4-wire circuit carries loads of 8 + j8.1 ohm; 4 + j4.1 ohm; and 2 +j2.1 ohmin the three phases respectively. The length of the circuit is 100 m, and the resistivity of the phase conductors is 0.0005 Ω/m. The neutral conductor is of the same size as the phase conductors. a) Select a reference angle 0for the first phase. Then write down the three phase voltages in both polar format and complex number format. b) Make appropriate assumptions, and take temperature effects on resistance is insignificant. Calculate the currents in the three phases. (Note: Determine conductor resistance, and apply Kirchhoff’s Voltage Law) Based on the result, suggest a main switch rating for the circuit. c) Show your preferred direction of neutral current in a diagram, and then determine its value. (Note: Apply superposition principle, and Kirchhoff’s Current Law) Use its magnitude to show that in this circuit, the unbalanced load may increase the voltage drop in some of the phases. (Note: Also observe the common volt drip in neutral) State your assumptions, if there are any. d) Suddenly the neutral wire of the circuit is broken. Estimate the new currents in the first phase, i.e. Phase L1. State your assumptions, if there are any.

1059


Fantio of tranformer

1223


How the annunciator works ? How to do its wiring

1170