Answer / rakesh

when a synchronous condenser is used in parallel with an
induction motor ( which normally operates at a low pf at
light loads) then the power supply to which an induction
motor is deriving its power from is relieved of providing
reactive power to im , while the im still draws the same
reactive power as before , the necessary kva is now
provided by the condenser as it exports reactive power.
hence the pf of im remains the same but the pf of the
combined system of im and sc is improved .

A cylindrical wire is compressed in length by 10%. The percentage decrease in the resistance will be?????

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SIR I AM GOING TO TAKE PART IN JINDAL ENTRANCE XAME OF 4TH OCT. PLEASE SEND ME SAMPLE QUESTIONS FOR THAT ON MY ID JITENDRA1603@GMAIL.COM

1 Answers  

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briefly explain the main blocks found in a microprocessor based system

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IS there any special instructions to be taken while installing the tranformer.

1 Answers  

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What should be the length of transmission line so that we can see/obtain the full sine wave of voltage??

0 Answers   Siemens,

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what is the function of anti pumping relays? what is KVAR? How it is generated in alternator? What is 3rd Harmonics? What is IDMT relay?

0 Answers   Aditya Birla,

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One 200 V, 100 W bulb is connected in series with primary of a 200 V, 10 kVA transformer. If its secondary is kept open circuited, then the bulb would have (1) Full brightness (2) Poor brightness (3) A little less than full brightness (4) More than full brightness...explain

2 Answers  

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why d.c. supply is given to the primary side of generator?

4 Answers  

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Why does the phase voltage of two healthy phases become equal to the line voltage in case of an ungrounded neutral 3 phase star connected sytem when a single line to ground fault occurs ?

2 Answers  

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what happens when you connect a.c and d.c supplies

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why the alternator rating in kva generator in kw.

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Hi everyone, I'm Lachuu, recently joined automation company as PLC Engineer. I have certain basic question, I request all big gurus and seniors to answer these question. Because this will be very helpful to me as well starters like me. How to design a control circuit (ex: pick & place - my current project) Yamaha robot PxYx series controller RCX222, using 6 cylinder double acting, plc keyence kv p16r 2 expansion unit for input and output each. How to select panel terminal mcb elcb powersupply. My main concern in some projects how to select dc power supply, mcb rcb(I came across dif bt b c d curves, but stil confusing, pls help me :-(. I would really appreciate all who are going respond to this question.

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