Answer / dinesh kumar

Rotor induced current frequency varies with speed and is
equal to s*f where s = slip and f is the frequency at
standstill. So at full speed the rotor current frequency is
very low. It is just like dc current.Thus the rotor current
can't be measured with ordinary tong tester. This will so
you very low value, although the current is high as marked
on motor name plate.

why the single phse machine can not run by the three phase supply.

2 Answers  

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NOW A DAYS THE POWER SUPPLY IS VERY LOW.SO THE FLURESCENT TUBE LIGHTS ARE VERY DIM.IS THERE IS ANY WAY TO INCREASE ITS BRIGHTNESS?FOR EXAMPLE ANY CONVERTER,CONDENSER?

1 Answers   Bhel,

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How to test the thyresitor or SCR by multmeter?

5 Answers   ABB,

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what is dc system? how getting pulse from rectifier?

1 Answers   ETA,

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What's mean HVF & HAF in Vacuum Circuit Breaker?

0 Answers   Gandhi Institute of Technology and Management (GITAM), Hyundai, Jayam Engineering Works,

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what is the diffrantial relay???????why we use it on the MDB

5 Answers  

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Difference between online and offline UPS?

11 Answers  

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can we use only a isolator in the subtation..

1 Answers   ABB,

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Brief function of stepper motor

1 Answers  

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what is the differences between microprocessor and general purpose computer

0 Answers   Stesalit,

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Can a dc motor works as a dc generator. If yes , then how?

2 Answers  

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In a power conditoining unit (inverter) of a solar plant when we measure the d.c. current fed by different strings of solar plates to inverter, the current in the negative wire is less almost by 1 ampere to the current in its positive wire say current in positive wire 5 A , then current in negative wire of the same string is 4 A. Since the current entering should be equal to current leaving then why the current is noticably less in negative wire.

0 Answers  

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