Answer Posted / gunasekaran

if it is 5P20 we can calculate from following formula
1.2*VA*ALF/rated secondary current.
magnetizing current it will be mA it may be .5 or .7 of current

what is the easiest method of short circuit current calculation ? pls. derive with a mathematical example in real life application.

2424

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Explain different types of d.c motors? Give their applications

1125

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why the voltage and current in a long transmission line are called travelling wave?

2216

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Suppose a 3 phase, 2 pole, 440V induction motor is driving a flywheel of 600mm diameter, 150kg mass. By using v-belt and pulley, the speed is increased to 4500 RPM. What will be the effect on motor current?

1400

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why normally Generator rating are between 11Kv to 22Kv?

4663

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why star point of HT motor not earthed?

2275

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what is the relationship between phase & neutral

2590

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As we use capacitor bank in 3ph ckt to improve PF, can we use capacitor in single ph domestric use, in house we have Fan,Mixer,electric cooker,iron,tube choke they also lag the system,because it is inductive load. if it is possible to improve PF of single ph system-- if yes- type of capacitor to be used,connection diagram, working in detail. if no-- list it.

1772

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Difference between field rheostat and armature rheostat.

1221

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how does a submersible pump work..?

1878

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how can i change the rotation of the AC single phase induction motor and show me by diagram

1797

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I have a CT meter with ratio 60/5. The meter reading of previous month was 3290.49 and that of current month was 3797.26. How many chargeable units as per normal meter should be my reading.

1406

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Please tell me the earthing procedures adopted for the STAR-STAR 3 Phase transformer in india and give a better sugession for earthing

1952

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What is effect of harmonic current (Draw by VFD) on power system/ electrical Equipments ?

2068

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why we can stote dc? why we cant store ac?

2073

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