Analog Electronics
The per unit impedance of a synchorous machine is 0.242. If base voltage is increased by 1.1 times, then per unit value will be

 0.220.
 0.266.
 0.242.
  0.200.

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Analog Electronics
A Semiconductor has a

 Positive Temperature coefficient of resistance
 Constant Temperature coefficient of resistance
 Negative Temperature coefficient of resistance
None of these

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Analog Electronics
For transistor action

  all of these.
  Je must be forward biased and Jc should be reverse biased.
  the base region must be very thin and lightly doped.
  the emitter should be heavily doped.

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