FET and JFET Quiz

A FET has

• (a)two terminals

• (b)three terminals

• (c) four terminals

• (d) one terminal

A FET consists of

• (a)Source

• (b)Drain

• (c) Gate

• (d) All of these

The current is controlled in FET by

• (a)electric field

• (b)magnetic field

• (C) both electric and magnetic field

• (d) none of these

In a FET the ratio of drain to source voltage (V DS) to the drain current (I D) for a constant value of gate to source voltage (V GS) is known as

• (a)A.C drain resistance

• (b) D.C drain resistance

• (c) trans-conductance

• (d)amplification factor

In a FET the ratio of change in drain current (ΔI D) to the change in gate-to-source voltage (ΔV GS) at constant drain-to–source voltage (V DS) is known as

• (a)A.C drain resistance

• (b) D.C drain resistance

• (c) trans-conductance

• (d)amplification factor

In a FET the ratio of change in drain-to-source voltage (ΔV DS) to the change in gate-to-source voltage (ΔV GS) at constant drain current I D is known as

• (a)A.C drain resistance

• (b) D.C drain resistance

• (c) trans-conductance

• (d)amplification factor

A JFET has the tree terminals, namely

• Cathode, anode, grid

• emitter, base, collector

• source, gate, drain

• none of the above

In a P-channel JFET, the charge carriers are

• electrons

• holes

• both electrons and holes

• none of the above

In a N-channel JFET, the charge carriers are

• electrons

• holes

• remains the same

• none of the above

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

• decreased

• increased

• both electrons and holes

• none of the above