FET

1. A MOSFET has terminals

1. two
2. five
3. four
4. three

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2. A certain common-source JFET has a voltage gain of 10. If the source bypass capacitor is removed, _________

1. the voltage gain will increase
2. the transconductance will increase
3. the voltage gain will decrease
4. the Q-point will shift

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3. 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 _________

1. 20 mA
2. 0 mA
3. 40 mA
4. 10 mA

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4. A certain JFET data sheet gives VGS(off) = -4 V. The pinch-off voltage Vp is _________

1. +4 V
2. -4 V
3. dependent on VGS
4. data insufficient

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

1. 0 mA
2. ID(on)
3. maximum
4. IDSS

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6. A common base configuration of a pnp transistor is analogous to of a JFET

1. common source configuration
2. common drain configuration
3. common gate configuration
4. none of the above

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7. 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 _________

1. 2.05 V
2. 25 V
3. 0.5 V
4. 1.89 V

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8. A JFET has high input impedance because _________

1. it is made of semiconductor material
2. input is reverse biased
3. of impurity atoms
4. none of the above

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9. A JFET has power gain

1. small
2. very high
3. very small
4. none of the above

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10. A JFET has three terminals, namely _________

1. cathode, anode, grid
2. emitter, base, collector
3. source, gate, drain
4. none of the above

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