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Analog Electronics

Analog Electronics
When VGS = 0 V, a JFET is

  saturated.
  cut off.
  an open switch.
  an analog device.

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Analog Electronics
An npn BJT has gm=38mA/v, cµ =10¯14 F, cπ =10¯13F and DC current gain β0=90.For this transistor fT & fβ are

fT =1.33 x 1012 Hz & fβ = 1.47 x 1010 Hz
fT =1.47 x 1010 Hz & fβ = 1.33 x 1012 Hz
fT =1.47 x 1010 Hz & fβ = 1.64 x 108 Hz
fT =1.64 x 108 Hz & fβ = 1.47 x 1010 Hz

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Analog Electronics
When the current gain increases from 50 to 300 in an emitter-biased circuit, the collector current

 is zero.
 increases by a factor of 6.
 decreases by a factor of 6.
  remains almost the same.

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Analog Electronics
The 741 C has a unity - gain frequency of

  20 Hz.
  1 MHz.
  10 Hz.
  15 MHz.

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Analog Electronics
If the collector resistor is open, the collector voltage is

 unknown.
 high.
 unchanged.
  low.

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Analog Electronics
Secondary breakdown occures in

 MOSFET but not in BJT.
 None of these.
  BJT but not is MOSFET.
 Both BJT and MOSFET.

ANSWER DOWNLOAD EXAMIANS APP
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