In a FET, there are _____________pn junctions at the sides?
A. three
B. four
C. five
D. two
Field Effect Transistors – FET
For VGS = 0 V, the drain current becomes constant when VDS exceeds ________________?
For VGS = 0 V, the drain current becomes constant when VDS exceeds ________________?
A. cut off
B. VDD
C. VP
D. V
A MOSFET differs from a JFET mainly because _________________?
A MOSFET differs from a JFET mainly because _________________?
A. of power rating
B. the MOSFET has two gates
C. the JFET has a pn junction
D. none of the above
n a common-source JFET amplifier, the output voltage is _____________?
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
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 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
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_______________?
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
A certain common-source JFET has a voltage gain of 10. If the source bypass capacitor is removed, ______________?
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
If load resistance in the above question (Q.49) is removed, the output voltage will_____________?
If load resistance in the above question (Q.49) is removed, the output voltage will_____________?
A. increase
B. decrease
C. stay the same
D. be zero
A n-channel D-MOSFET with a positive VGS is operating in _______________?
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
The constant-current region of a JFET lies between______________?
The constant-current region of a JFET lies between______________?
A. cut off and saturation
B. cut off and ch-off
a. and IDSS
C. ch-off and breakdown