Answer Posted / rvg

SMPS- switch mode power supply is the best solution for
such frequency variable supplies.

Dear sir, my knowledge about cable size determination is limited. Though I read examples I could not calculate the Cable size required for electric driven pump 40 KW, 380 Volt, 50 HZ, 50 meter from transformer and it is three phase star delta starting. Please help as there is no one in my surroundings to help.

1757

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block diagram of 2 ups system connected in hot stand by mode?

8061

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raleigh method

2093

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BSNL TTA EXAM QUESTION

2180

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What is the settings of distance protection relay in 400 kv line

1698

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What is the disadventage of gland earthing(power cable) if any. ?

2122

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c++ write a program to use a fuction call "max"which accepts an intger arrey of size5.as an arrument and return the larger and smallest of the arrey to main without changing. the original changing of the original position of the element of the arrey.

1920

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Is electro plating what type of load whether resistive, inductive or capacitive loads

3324

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what is the chemical name and formula of refrigarent R-134a.

2287

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I have an existing old MCCB. ABB Model SACE, the rating are: Ue = 660 volts, Iu =1250 Amps, 3 poles, Ith (max) =800 amps at 45 deg C. I need a circuit breaker for my 3 phase motors, 380 volts 60 hz. the supplier required the minimum ampacity of the breaker to be 911 amps. can i use this breaker with rating of Iu =1250 amps but Ith = 800amps maximum?

2317

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why would the rotor rotate at sub synchronous speed against the direction of rotating flux when d rotor of 3 phase IM is connected to 3 phase balanced supply and the stator windings are shortcircuited ??

2039

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How npn and pnp transistor works

1141

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how many single tension hardware are required on a double circuit transmission tower?

1941

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What is the use of oil in transformers?

1102

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what is the function of statics switch in ups and tell me parts

2040

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