The output characteristics of a JFET closely resemble the output characteristics of a ___________ valve?

Related Mcqs:

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

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

2. 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

3. 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

4. The gate of a JFET is ___________ biased?

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

5. A JFET is also called____________ transistor?

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

6. 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

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

   A. electrons
   B. holes
   C. both electrons and holes
   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. A MOSFET is sometimes called______________ JFET?

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

10. 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