Question: If load resistance in the above question (Q.49) is removed, the output voltage will_____________?

• 1. increase
• 2. decrease
• 3. stay the same
• 4. be zero

Question: A n-channel D-MOSFET with a positive VGS is operating in _______________?

• 1. the depletion-mode
• 2. the enhancement-mode
• 3. cut off
• 4. saturation

Question: If the cross-sectional area of the channel in n-channel JEFT increases, the drain current _____________?

• 1. is increased
• 2. is decreased
• 3. remains the same
• 4. none of the above

Question: The transconductance of a JFET ranges from ________________?

• 1. 100 to 500 mA/V
• 2. 500 to 1000 mA/V
• 3. 0.5 to 30 mA/V
• 4. above 1000 mA/V

Question: The input impedance of a MOSFET is of the order of______________?

• 1. O
• 2. a few hundred O
• 3. kO
• 4. several MO

Question: A MOSFET is sometimes called______________ JFET?

• 1. many gate
• 2. open gate
• 3. insulated gate
• 4. shorted gate

Question: A MOSFET uses the electric field of a _______________to control the channel current?

• 1. capacitor
• 2. battery
• 3. generator
• 4. none of the above

Question: If the gate of a JFET is made less negative, the width of the conducting channel__________________?

• 1. remains the same
• 2. is decreased
• 3. is increased
• 4. none of the above

Question: The gate voltage in a JFET at which drain current becomes zero is called ______________ voltage?

• 1. saturation
• 2. pinch-off
• 3. active
• 4. cut-off

Question: The pinch-off voltage of a JFET is about _______________?

• 1. 5 V
• 2. 0.6 V
• 3. 15 V
• 4. 25 V