If you don’t have coal, salt and copper, then how would you earth your connection temporarily at a camp site.?

2 Answers   Focus,

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how many voltage or current enough to kill a person?

12 Answers  

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why neutral and earth should not be connected on 3 phase 440v/50c/s supply at consumer side. where as on 25kv/ac/50c/s railway traction substation neutral and earth will be connected and track at substation. and track will act as neutral and earth. Reasons for this is needed urgently

4 Answers  

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what are the disadvantages of leading P.F(power factor)?

2 Answers  

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- two pumps must work with them at the same time but if the first pump start the second pump  must delayed for some time to start  also , with motor rated power = 90 KW and rated voltage = 380 V and rated power factor = 0.85 lag please draw the power and control circuit for it and determine all circuit components parameters that you use it

0 Answers  

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Design and explain a circuit to produce an unregulated full wave D.C supply.

1 Answers  

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what is percentage impedance of transformer? explain its significance

2 Answers   ABC, Bosch,

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After doubling voltage from solar cells & use step down voltage transformer can we get high current output with low voltage.

0 Answers   Transco,

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In a simple spur gear train, gears with 24, 48, 32, 72 and 96 teeth are in sequence. The gear with 24 teeth runs at 900 rpm. The speed in rpm of gear with 72 teeth is

1 Answers   Caterpillar,

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What are the special cables required for explosion proof wiring?

2 Answers   IVRCL,

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what is the disadvantage of lagging power factor & why ?

2 Answers  

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In separately excited m/c,we excite the field by a dc source,what not with ac source?

1 Answers  

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