JFET

A JFET has three terminals, namely …………

• cathode, anode, gate

• 
  emitter, base, collector

• source, gate, drain

• gate, base, source

A JFET is also called …………… transistor

• unipolar

• unijunction

• bipolar

• unibipolar

A JFET always operates with

• the gate-to-source voltage reverse-biased

• the gate-to-source voltage forward-biased

• the drain connected to ground

• the drain connected to ground

If the reverse bias on the gate of a JFET is negatively increased, then width of the conducting channel …………..

• decrease

• increase

• remain the same

• constant

For V_GS = 0 V, the drain current becomes constant when V_DS exceeds ………

• Cutoff

• Vp

• VDD

• 0

A certain JFET having values of V_GS(off) = -6V and I_DSS = 3 mA. Calculate the value of drain current when V_GS = -2V.

• 1.33 mA

• 2.08 mA

• 1.25 mA

• 0.7 mA

When a JFET is pinch-off, the depletion layers are

• conducting

• almost close together

• decreases

• nothing happen

I_DSS is .............

• the drain current with the source shorted
  

• the drain current at cutoff
  

• the maximum possible drain current
  

• the midpoint drain current
  

The value of V_GS at which I_D (drain current) becomes zero is ..........

• pinch-off voltage, V_P

• Cutoff voltage, V_^GS(off)

• breakdown voltage, V_BR

• drain voltage, V_D