Why we use Y-Y connection in power transformer (8-10 MVA, 132 kV to 11 KV)and D-y in distribution transformer (2 MVA, 11 KV to 440 Volts)?

4 Answers  

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please mention the minimum IR value for different voltage systems

6 Answers  

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why the transformer secondary voltage is more than the load end voltage like t/f 11KV/433V for 415V(terminal voltage)

4 Answers  

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what will happen if instead of neutral we use earth wire as return conductor?if we can use ,then why we are not using in our day to day appliances?please justify the answer

11 Answers   NTPC, ONGC,

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what happen for input voltage output voltage input current output current and kva if we increase primery winding in transformer?

1 Answers  

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Why we are measured insulation resistance applied through DC Voltage?

3 Answers  

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I'm looking for a manual set for a Credence ASL-1000 or ASL 3000. Softcopy would be preferred but I'll take what I can get.

2 Answers  

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how to calculate knee point voltage of current transformer?

21 Answers   Bhel, Bhilai, Jackson,

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explain the what is a drive ? 0 4 which type motor r use in the celling fan..... PCB plannet 2 13 If stator & rotor of a 3-phase induction motor have different no. of poles, will the motor run or not?? types of drives Why dc supply is used for closing and tripping coil of ht breakers. What happen if we use only ups ac supply only. ACC 1 41 how the 3phase induction motor is running in 2phase supply with help of capacitor? 1 33 what is the actual difference betwen constructional details and constructional features? 1 20 how does commutator convert a.c to d.c?

0 Answers  

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whose the first invented AC voltage or DCvoltage

4 Answers  

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What is the principle of residual protection?

0 Answers  

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what will happen if frequency is below 50 hz?

0 Answers   Student,

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