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Power Electronics

Power Electronics
The latching current of GTO should be of order

 2 A.
 100 mA.
 1 A.
  500 mA.

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Power Electronics
A Triac has three terminals viz ___________

Drain, source, gate
Two main terminal and a gate terminal
Cathode, anode, gate
None of these

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Power Electronics
Which statement is true for latching current ?

 It is related to turn off process of the device.
  It is related to turn on process of the device.
 Both C and D.
 It is related to conduction process of device.

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Power Electronics
Practical way of obtaining static voltage equalization in series connected SCRs is by the use of

 one resistor across the string.
 resistors of different values across each SCR.
  resistors of the same value across each SCR.
 one resistor in series with each SCR.

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Power Electronics
A triac is equivalent to two SCRs ___________.

None of these
In parallel
In inverse-parallel
In series

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Power Electronics
After proper turn on of thyristor

 gate signal is always present.
None of these
  gate signal must be removed.
 gate signal should present but can be removed.

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