The gate voltage in a JFET at which drain current becomes zero is called ______________ voltage?

Related Mcqs:

1. When drain voltage equals the pinch-off-voltage, then drain current ___________ with the increase in drain voltage?

   A. decreases
   B. increases
   C. remains constant
   D. none of the above

2. 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

3. 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

4. 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

5. For VGS = 0 V, the drain current becomes constant when VDS exceeds ________________?

   A. cut off
   B. VDD
   C. VP
   D. V

6. 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

7. The gate of a JFET is ___________ biased?

   A. reverse
   B. forward
   C. reverse as well as forward
   D. none of the above

8. If the gate of a JFET is made less negative, the width of the conducting channel__________________?

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

9. The pinch-off voltage of a JFET is about _______________?

   A. 5 V
   B. 0.6 V
   C. 15 V
   D. 25 V

10. A CS JFET amplifier has a load resistance of 10 kO , RD= 820O . If gm= 5mS and Vin= 500 mV, the output signal voltage is__________________?

    A. 2.05 V
    B. 25 V
    C. 0.5 V
    D. 1.89 V