At cut-off, the JFET channel is _____________?

Related Mcqs:

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

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

2. If the reverse bias on the gate of a JFET is increased, then width of the conducting channel ______________?

   A. is decreased
   B. is increased
   C. remains the same
   D. none of the above

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. If the cross-sectional area of the channel in n-channel JEFT increases, the drain current _____________?

   A. is increased
   B. is decreased
   C. remains the same
   D. none of the above

5. The pinch-off voltage in a JFET is analogous to _____________ voltage in a vacuum tube?

   A. anode
   B. cathode
   C. grid cut off
   D. none of the above

6. n a common-source JFET amplifier, the output voltage is _____________?

   A. 180o out of phase with the input
   B. in phase with the input
   C. 90o out of phase with the input
   D. taken at the source

7. A certain JFET data sheet gives VGS(off) = -4 V. The pinch-off voltage Vp is _____________?

   A. +4 V
   B. -4 V
   C. dependent on VGS
   D. data insufficient

8. A common base configuration of a pnp transistor is analogous to _____________?of a JFET

   A. common source configuration
   B. common drain configuration
   C. common gate configuration
   D. none of the above

9. A JFET is a__________ driven device?

   A. current
   B. voltage
   C. both current and voltage
   D. none of the above

10. A certain common-source JFET has a voltage gain of 10. If the source bypass capacitor is removed, ______________?

    A. the voltage gain will increase
    B. the transconductance will increase
    C. the voltage gain will decrease
    D. the Q-point will shift