Questions
41
If load resistance in the above question (Q.49) is removed, the output voltage will …………
Answer: increase
42
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 ………..
Answer: 1.89 V
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43
A certain common-source JFET has a voltage gain of 10. If the source bypass capacitor is removed, ……………….
Answer: the voltage gain will decrease
44
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 …………
Answer: 4.5
45
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 …………
Answer: 11.4
46
In a common-source JFET amplifier, the output voltage is …………………
Answer: 180o out of phase with the input
47
A certain p-channel E-MOSFET has VGS(th) = -2V. If VGS= 0V, the drain current is ……….
Answer: 0 mA
48
A n-channel D-MOSFET with a positive VGS is operating in …………
Answer: the enhancement-mode
