Answer Posted / raj

1Khw

How to address the servo drive for motor

2003

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Can anybody inform me about the pattern of ECIL GET( Graduate Engineers Trainee) interview for Electrical students? Will there be HR round as well? I thought of preparing for 2 to 3 subjects thoroughly. Will it be sufficient? Please share your thoughts.

2140

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what is the difference between the voltage of 5 volts capacitor and and 5volts battery?

1942

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How to select transmission line type (i.e. 11kv or 33kv) for new established industries

2029

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How we select the vector group of 3phase power transformer?

2728

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Explain Need of a starter in a dc motor.? Also explain any two starting and speed control method of dc motor?

1718

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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.

2032

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Difference between ac parallel circuit and ac series circuit?

2115

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how to calculate the loss tangent of electrical cables

2071

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what is Fan Control Cubicle

2479

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TELL ME WHAT IS INDUCTOR AND CAPACITOR WHAT IS IT BASIC OPERATION ANDFUNCTION?

2018

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can we choose current transformer secondary, to calculate residual flux in a power transformer, so as its saturation is close to the saturation level of power transformer?

1495

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IF alternator SCR value will be high means what happen in alternator efficency at operating power factor of 0.8

3859

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if i am in front of transmission line how to know that current direction without any equipment

1771

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How to derive detailed design of Suitable bus Bar for 100A for 6.6KV?

1807

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