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?

0 Answers  

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Why CTs are connected in star on T/F delta connected winding side & in delta on T/F star connected winding side for T/F differential protection?

2 Answers  

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how CBCT works?

1 Answers  

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Differnce between negative Pahse SequenceFunction and unbalance Function?

0 Answers   Atsco, LMW Lakshmi Machine Works Limited,

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What is the formula for calculating impedance of transformers connected parallel at fault level 50KA?

0 Answers  

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When PRV operated at power transformer ,can anybody tell me particular pressure for 50mva transformer plzzz.

1 Answers   BWSSB,

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State the other types of Air Conditioners?

0 Answers   HSL,

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What are the applications that use Solid State Drives in your home?

1 Answers   L&T,

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for a 33/11kv transformer, after step down what happens to the balance 22kv.

2 Answers  

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whate is the meaning of balance/unbalance,in stabilizers type

0 Answers   TCS,

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One of our gas turbine generator unit "1st stage rotor ground fault" alarm was occured several times. we tried to measure some voltage vulue ground fault protection relay (UNS3020a made by ABB and we measured the value of: Ground: 0.9VDC 5V: 5.8VDC 24V: 23VDC u+: 300 – 350mVAC Rf1: 17.5mVAC Rf2: 17.6mVAC The unit still running and the alarm was reset. As of 6pm yesterday and unitl now no alarm happened again. I our protection relay was defective?

1 Answers  

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What are methods to avoid the inrush current at the time of starting of power transformer ?

8 Answers   Wipro,

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