please send me privious exam's queation papers of section engineer(electrical).

0 Answers   RRB,

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what is invertor supply and raw powersupply

0 Answers  

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what is vector surge & vector shift? we have 25.3 MW(11kv) generator & 11kv/132kv transformer, connected with with 132 kv grid.vector surge relay is tripping frequentaly.what is permissible maximum limit for this.

3 Answers  

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state the functions of different parts of star delta starter.

1 Answers  

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can d.c.transformer exist? if yes then what its max. rating?

6 Answers  

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in the directional overcurrent and earthfault protection,normally we are setting the angle 45 deg lead for phase fault overcurrent and -45 deg lead for earthfault fro forward direction.but both the fault are operating on the same angle region only.why?how the relay will response?

0 Answers  

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What is minimum phase system?

0 Answers  

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I have a shop heater with a 1/3 hp capacitor start, induction motor driving the fan. Intermittently, the fan motor speeds up significantly for several seconds (15-60 sec) then slows to normal operating speed. The manufacturer suggested changing the capacitor which made no sense, but I did it to no avail. Could this possibly be caused by the centrifugal switch intermittently reconnecting the start winding?

1 Answers  

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we want low electricity at lower speed of fan.what we have to do?

5 Answers  

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what is the dis-advantage of 3 phase 3 wire energy meter?

1 Answers   Exide, Nelco,

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Is there chopping current in resistive circuit

0 Answers  

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how to calculate the ct burden?

1 Answers  

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