Answer / s.v.vaze

Neutral is the point formed by connection of 3 phase windings of any 3 ph Xmr/motor or generator. In case of solidly grounded system this neutral is earthed. IN case of Generators it is earthed through impedance to limit fault current.
Earth is a system which provides a path for current to flow into the earth. It acts as a Protection by providing early isolation of faulty section in case of any fault.

why we do not get the electric shock at end of returning water of water cooled cable

1 Answers  

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1 hp single phase motor is more likely to get hot thsn inone hp 3 phase motor its true or false? If true why?

1 Answers   TVS,

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why ELCB's are not useful for operation theater equipments ?

4 Answers   Reliance,

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hi i have a 400kva transformer i want to know the test i can use to check on it thx

1 Answers  

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Why temperature rise test is conducted in bus bars and Isolators?

5 Answers   Areva,

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iii) A shunt motor runs at 70 rad/sec from a 460V supply and takes in an armature current of 100A. Resistors of 2.52 ohms and 1.64 ohms are connected in series with the armature and in parallel with the armature respectively. The field excitation remains direct from the 460V supply but the generated torque is halved. Determine the new running speed. Neglect brush voltage drop. The armature resistance is 0.4 ohms. [15]

1 Answers  

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which motor will u use in refinaries?

1 Answers   IOCL,

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lightning arrester rating selection procedure: (line to line voltage(kV)/(squ.root of 3))*squ.root of 2. now the question is, IS this above formula correct for both STAR and DELTA connected system???

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54 Comments Alok and Bhanu play the following min-max game. Given the expression N = 38 + X*(Y – Z) where X, Y and Z are variables representing single digits (0 to 9), Alok would like to maximize N while Bhanu would like to minimize it. Towards this end, Alok chooses a single digit number and Bhanu substitutes this for a variable of her choice (X, Y or Z). Alok then chooses the next value and Bhanu, the variable to substitute the value. Finally Alok proposes the value for the remaining variable. Assuming both play to their optimal strategies, the value of N at the end of the game would be?

0 Answers   Bajaj, TCS,

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rating of ups??

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CAn a TJM 10 relay measure over current ?

2 Answers  

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what does the regenerative braking mean?and how it used for Dc motor? thanks.

2 Answers  

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