Answer Posted / mafika

p.u impedance represents the amount of volt drop that's
going to occur in the transformer and also helps in the
fault calculations

how to changeover ups in this power failur time?

1932

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Calculate torque developed by the 3-phase, 5 H.P., 4 pole induction motor runs at 1500 rpm A 23 N-m B 21 N-m C 10 N-m D 0 N-m

5153

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What is the accepted limit to increase the choosen transformer capacity over the load and why ?

3459

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What is primary and backup protection?

1105

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What is CCT (Correlated Color Temperature) ?

1901

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PLZ sent the previous year question paper for GET in NHPC on my EMail id ppshanker@gmail.com

5378

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how wecalculate breaking capcity of acb mcb mccb .explain with example

1860

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. What is Electrical Life & Mechanical Life of Circuit Breaker? 2. What is Electrial Life & Mechanical Life of Magnetic Contactor? 3. What is RCD, RCCB & RCBO? 4. What is the Between defferance of RCD, RCCB & RCBO?

3290

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application s to shunt coil

1866

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earth also having a gravitational force (magnetic field of north and south)but it attracts any object compare to this theartifical magnetic cant perform same as earth why?

1905

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I have an existing old MCCB. ABB Model SACE, the rating are: Ue = 660 volts, Iu =1250 Amps, 3 poles, Ith (max) =800 amps at 45 deg C. I need a circuit breaker for my 3 phase motors, 380 volts 60 hz. the supplier required the minimum ampacity of the breaker to be 911 amps. can i use this breaker with rating of Iu =1250 amps but Ith = 800amps maximum?

2249

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why does the magnetic balance tests at transformer?

1899

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Comment on the working principle of operation of a single-phase transformer.

1134

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why most of junction box vendors providing T5/T6 Temp class jb's for T3 area any special reason?

2049

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which phase is preferred for connecting 1 phase vt used for synchronizing OHL? WHY?

1993

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