Answer / k mutyala naidu

by using three point starter we cant control(different speeds) the speed,but by using 4 point stater we can control the speed of the motor.

Answer / sheikh

3 point starter used to make and break the only for phasees
like Red , Yellow & Blue phase. and 4 point starter used to
make & break the 3 phase and Neutral also . 4th point may use
for make & Break the neutral of given circuit

Answer / shiva

high current in four point starter

suppose we using 3 phase motor of 440 v means what range of C.T. is require for measuring current , the rating of motor is 1HP ?

5 Answers  

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11 kv input, 66 kv input advantages

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which metal use as a electrical shunt?

2 Answers  

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hello!my name is sheikh iam preparing for indian engineering servieces,please send me the old question papers..to sheikhshaazforjobs@gmail.com

0 Answers   APCPDCL, apspdcl,

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How much area is covered by a single lightning arrestor to protect object from lightning strokes ?

1 Answers  

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What is lifting power for 1 wb/m2 and 1 A magnet?

0 Answers   Techno Labs,

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what is the principal of transformer?

2 Answers  

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explain comutator action in detail.thanks

0 Answers  

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What are electric motors?

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why hv current transformers have big size ?

5 Answers   RailTel, TCS,

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What is Wlak Test in Fire Alarm System????

2 Answers   Emerson,

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What is difference between unity power factor wattmeter and upper power factor wattmeter? In short circuit test of transformer the wattmeter used is unity power factor type or upper power factor type wattmeter?

0 Answers   Jindal Steel and Power,

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