what is derated current of power cable & what is formule to find derated current?

1 Answers   Thermon,

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how to select power and control contactor .

1 Answers   Bhel,

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if the length, number of turns and area of coil are doubled then inductance of the coil becomes.?

1 Answers  

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Require Generator Capcity ( KVA ) for 3 Phase Motor having 4.7Kw with starting current of 16amps?

1 Answers  

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3 shows a 415 V, 3-phase generator supplying a 3-phase 415/110 V transformer. Draw the individual and combined impedance diagrams to a base of 10 kVA. Determine the system fault kVA and the fault currents at the 415 V and 110 V busbars for short circuit faults on the transformer input or output terminals. Work in p.u. values of impedances.

0 Answers  

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Why we use Carbon & graphite mixxed brushes in the DC motor?

6 Answers  

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What happens if the negative to earth voltage is greater than positive to earth voltage in the battery of substation?

0 Answers  

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How a capacitor discharge weld power supply works? what is the use of a pulse transformer?

0 Answers  

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What are the causes of having an rmu explode after installation? And how do u treat the bushings of an rmu?

0 Answers   JKN Limited,

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How current is reduced in STAR connection?

6 Answers  

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Why the size of transformer decreases if we increases the frequency?

5 Answers   Graphics Engineering,

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What is the difference between an insulator and a dielectric?

2 Answers  

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