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1) If the cross-sectional area of the channel in n-channel JEFT increases, the drain current _____________? a. is increased b. is decreased c. remains the same d. none of the above
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2) The transconductance of a JFET ranges from ________________? a. 100 to 500 mA/V b. 500 to 1000 mA/V c. 0.5 to 30 mA/V d. above 1000 mA/V
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3) The input impedance of a MOSFET is of the order of______________? a. O b. a few hundred O c. kO d. several MO
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4) A MOSFET is sometimes called______________ JFET? a. many gate b. open gate c. insulated gate d. shorted gate
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5) A MOSFET uses the electric field of a _______________to control the channel current? a. capacitor b. battery c. generator d. none of the above
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6) 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
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7) The gate voltage in a JFET at which drain current becomes zero is called ______________ voltage? a. saturation b. pinch-off c. active d. cut-off
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8) The pinch-off voltage of a JFET is about _______________? a. 5 V b. 0.6 V c. 15 V d. 25 V
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9) In class A operation, the input circuit of a JFET is ____________ biased? a. forward b. reverse c. not d. none of the above
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10) The pinch-off voltage in a JFET is analogous to _____________ voltage in a vacuum tube? a. anode b. cathode c. grid cut off d. none of the above
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