Why slip-ring and brushes are not required in squirrel cage induction motor?

4 Answers   L&T,

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what is mean by kneepoint voltage? when it will happen? ( my doubt is, if CT secondary is open means ct get saturation or blas? what are factors are required for calculations? plz give currect anws:

0 Answers  

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Which modulation has higher data rates a.fm b.am c.qam d.qpsk

1 Answers   NTDC,

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what is the formula for efficiency of francis turbine and generator for hydropower? what is best way to select francis turbine and generator?

0 Answers   HAL,

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why the neutral point is zero in star connection?

4 Answers  

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How do you reverse the direction of rotation of a FAN?

13 Answers   CPCL, IOCL,

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What is LMU and LMDU. in PLCC communication of 132 kv transmission line. is it possible to use only one LMU with out LMDU ?

1 Answers  

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What it the purpose of parallel phasing transfomers??

0 Answers   Asia MotorWorks AMW,

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while calculating the power absorbed by a resistor connected to the output of a half wave rectifier circuit should we use rms or average current? explain with reason.

1 Answers   Vedanta,

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Give the selection criteria of a 3 Phase transformer for industrial purposes ?

5 Answers   NDDB, TATA,

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how is efficincy of the transformer is predermined

3 Answers  

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Ht panal kia hota ha?

1 Answers  

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