Related Mcqs:

1. A certain D-MOSFET is biased at VGS = 0 V. Its data sheet specifies IDSS = 20mA and VGS(off) = -5 V. The value of the drain current is _____________?

   A. 20 mA
   B. 0 mA
   C. 40 mA
   D. 10 mA

2. The transconductance of a JFET ranges from ________________?

   A. 100 to 500 mA/V
   B. 500 to 1000 mA/V
   C. 0.5 to 30 mA/V
   D. above 1000 mA/V

3. The channel of a JFET is between the ________________?

   A. gate and drain
   B. drain and source
   C. gate and source
   D. input and output

4. In a certain CS JFET amplifier, RD= 1kO , RS= 560 O , VDD=10V and gm= 4500 µS. If the source resistor is completely bypassed, the voltage gain is ________________?

   A. 450
   B. 45
   C. 2.52
   D. 4.5

5. A JFET is similar in operation to ___________ valve?

   A. diode
   B. pentode
   C. triode
   D. tetrode

6. A JFET is also called____________ transistor?

   A. unipolar
   B. bipolar
   C. unijunction
   D. none of the above

7. In a JFET, when drain voltage is equal to pinch-off voltage, the depletion layers ______________?

   A. almost touch each other
   B. have large gap
   C. have moderate gap
   D. none of the above

8. In a p-channel JFET, the charge carriers are _____________?

   A. electrons
   B. holes
   C. both electrons and holes
   D. none of the above

9. A MOSFET is sometimes called______________ JFET?

   A. many gate
   B. open gate
   C. insulated gate
   D. shorted gate

10. At cut-off, the JFET channel is _____________?

    A. at its widest point
    B. completely closed by the depletion region
    C. extremely narrow
    D. reverse baised