Answer Posted / muzammil zahoor

in our industry pf is maintained between .80 to.85

What is resolver and glass scale in CNC how they work?

2282

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What are the special cables required for explosion proof wiring?

16709

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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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Draw the wave shape of armature current in a generator subjected to a sudden three phase short- circuit at its terminals. Define various reactance of generator from this wave shape.

2225

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what is the safe meggar values for motor, transformer HT, LT and Cables? IF we want to replace I/C bay at our 220 kv substation which is of 140 mw load capacity bay to be replaced by 400 mw capacity bay.other than CT(1200/1) what are the other equipment i have to replace. why we generally use 3.5 core cable or in other word 1/2 core for neutral and also confirm me that in balance conditiob(3 phase)current in neutral will zero

2274

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define the non synchoronism of synchoronous machine in general g or m??

1873

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What is the requirement of grounding the neutral of single phase generators on load? If the neutral is not grounded, what will be the effect?

2107

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I have motor 1500 HP and , 4160 V , 60 HZ , then i need the rating of transformer which can feed that motor ??

1950

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As i want some model question paper in basic computer science and history please send me immediately sir

1883

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What is fault clearing time for Current Limiting Moulded Case Circuit Breaker?.

1780

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As a electrical engineer.. what are the basic norms should follow in transformer oil testing.. 1.What is the Electrode type? 2.How long time you will give for oil testing?

3640

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Why back emf used for a dc motor? Highlight its significance.

1195

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what is a bus riser in power system and why it is used

46216

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What is the approximate value of stacking factor?

1161

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what is level 2 automation?

3153

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