A MOSFET differs from a JFET mainly because _________________?

Related Mcqs:

1. A MOSFET is sometimes called______________ JFET?

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

2. A JFET has high input impedance because _________________?

   A. it is made of semiconductor material
   B. input is reverse biased
   C. of impurity atoms
   D. none of the above

3. The two important advantages of a JFET are _________________?

   A. high input impedance and square-law property
   B. inexpensive and high output impedance
   C. low input impedance and high output impedance
   D. none of the above

4. A MOSFET can be operated with________________?

   A. negative gate voltage only
   B. positive gate voltage only
   C. positive as well as negative gate voltage
   D. none of the above

5. A MOSFET has______________ terminals?

   A. two
   B. five
   C. four
   D. three

6. The input impedance of a MOSFET is of the order of______________?

   A. O
   B. a few hundred O
   C. kO
   D. several MO

7. A n-channel D-MOSFET with a positive VGS is operating in _______________?

   A. the depletion-mode
   B. the enhancement-mode
   C. cut off
   D. saturation

8. In a certain common-source D-MOSFET amplifier, Vds =3.2 V r.m. and Vgs = 280 mV r.m.s. The voltage gain is_______________?

   A. 1
   B. 11.4
   C. 8.75
   D. 3.2

9. 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

10. A certain p-channel E-MOSFET has VGS(th) = -2V. If VGS= 0V, the drain current is ____________?

    A. 0 mA
    B. ID(on)
    C. maximum
    D. IDSS