Answer Posted / guna

KVA

Why sometime AVR and sometime Booster coil is used in Alternator? what is the diferance between AVR & Booster coil due to which they are selected

3126

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Load transfer in 11kv double busbar switchgear - operation.

1958

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what are the Alarm, Trip & Safety equipment (Issues) present in Power Transformers pls Mail it to ashokbabunhce@gmail.com

1915

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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.

2034

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i need about 10 years of GATE solved papers in pdf format and even mock tests toooo

1673

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we are having 110 Kv,250mA Electrostatic precipitators for coal fired boilers. what will be static voltage and current after discharge and what time it will remain before earthing?

1904

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how to measure the current by compact digital equipment with dislay which fit inside any equipment

1988

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what happens if dc supply is given and the remedies for it.

1821

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How to do cable earhing? whether by grounding Armour to ground or by running extra G.I wire along with cable? which one is preferred mostly amoung them? If the second one is more preferable how many GI wires to be run along with cable (1 or 2)?

2139

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Define delay time.

1083

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hello friend i wish to study a course related to the electrical construction, controlling and monitoring , which course i want to study? pls give me the name of institute?

1795

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WHAT IS THE USE OF PIG TAIL IN WINDOW CT ?

2537

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Electronic circuit

1035

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If I want to connect a capacitor bank on the HT side of a 11kV/415V, 3 phase delta-star distribution transformer to supply Reactive power to it..what practical specifications of a Capacitor bank that can i've??please reply..

2497

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hi i have applied for lic of india south cenrtal zonal ,hyd. i didnt get hall ticket till now.let me know how can i get form internet

1999

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