1.what is the difference between transformer differential and busbar differential.2)why we are using 2 slope for trafo diif and 1 slope for busbar diff.3)what is the purpose of metrosil and stabilizing resistor in high impedance relay circuit.4)how metrosil reduce the peak volage.5)what is the funtion of stabilizing resistor

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Q-1 what are the structural and operational difference between a distribution and a power transformer? Q-2 what is skew in motors? Q-3 draw equivalent circuit of transformer Q-4 explain with phasors how pf is improved with loading in induction motors Q-5 DIFFERENT METHODS OF CABLE LAYING(interviewer asked if i heard new chemical based earthing system next) Q-6 pi model of medium length trans line Q-7 v/f control?why Q-8 vacuum circuit breaker operates in?

1 Answers   Vijai Electricals,

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i need the curve duty cycle and amper for (150 kva @50% dyty cycle) transformer turn ratio :19 and vin 400

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Which capacitor is used in ceiling fans ?

1 Answers  

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v/f drive basic princeple

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How to calculate the current of Highpressure Mercury Vapour Lamp?what is the basis?whether we have to consider power factor or not?

0 Answers   Divis Laboratories,

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For 6600/433 distribution transformer we apply secondary side 433 volts how much voltage in primary side.

2 Answers  

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what is the difference between the 94 lockout relay and 86 lock out relay. I have noticed that the 94 lockout relay is activated when the distance realy is activated and 86 is activated when the 87T differential is activated. but why can't the same lockouts be used for both the protection schemes

10 Answers   ABB,

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what is the use of the puls transformer in UPS & how it works???????????

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what is the Pickup/drop off ratio in BCPU relays

0 Answers   DNJ Energy LLC,

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how can see the ac indoor or out door ac which Tr

0 Answers   Wipro,

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what are factors to be consider to design a HT & LT motor?

1 Answers  

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