Answer Posted / tripple x

MR "Thuranga". SAALE JIS DESH MAIN REHTA HAI USE BACKWARD
BOLTA HAI,, SAALE BACKWARD TUM LOGO HO, JINHE KUCH V PETA
NAHI HAI, CHUTIYA SAALE.............

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.

2059

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what is the use of surge suppresser in 33 KV incoming panel. where it must be installed,inseries with incoming cable surge suppresser must be at incoming of the breaker are outgoing of the breaker

5425

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Explain the terms real power, apparent power and reactive power for ac circuits and also the units used.

1113

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While testing LA mast,What are the parameter limits ?

1918

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Explain what is clipper and clamper circuits?

1186

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for a 500 KVA connected load, I calculated 30% of capactor for power correction. Even after using 225 KVR capactor PF is not improving. What could be reason for low Phase correction factor?

1970

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what is the calculation involved to design the heater to heat 10KL of water in temperature control unit?

1943

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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.

2045

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what is the IPC ? & what the uses ?

1518

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what is the use of piston rings in the engine used for a generator...........

2208

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in electrical control panel. how can i choose the cable rating. (example - 11kw motor, 18-25A mpcb}

2867

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why does a dc machine has high efficiency while working as a generator than as a motor ..

2014

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how to calculate transformer load?

2489

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If any cable burnt how can we identify it burnt by high current of high voltage? 

2460

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how does commutator convert a.c to d.c?

2213

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