what is model question rrb junior engineer electrical gr.II

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What is the transformenr turns ratio.

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WHY IS THE UNITY POWER FACTOR NOT THE MOST CONOMICAL POWER FACTOR?

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please explain working of revers power relay

4 Answers   CESC, DCM,

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as we see that in our country the power rating for transmission is always rated in multiple of 11 like 11kv,33kv,66kv132kv. So i want to know wht is reason or logic here.

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i want to know how to determine that a surge arrester work properly in 11kv system. and how to test a 12kv surge arrester

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I have installed capacitor bank at secondary transformer. cos phi is increase. but on load (far from transormer), it still poor. Can anybody explain it??

6 Answers  

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difference between power surge and switching transient

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What happen if 200KVAR capacitor continuesly connected to load and all the plant machinaries are not in working?

4 Answers  

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Can I use 1 phase power supply to run 3 phase motor? If yes, how?

6 Answers  

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what happen to the voltage and current in all phases when an earth fault occur in a phase in three phase three wire system(delta connected)...

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how Local Breaker Backup relay working?

1 Answers  

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