A n-channel D-MOSFET with a positive VGS is operating in _______________?
(A) the depletion-mode
(B) the enhancement-mode
(C) cut off
(D) saturation
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
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
The input impedance of a MOSFET is of the order of______________?
(A) O
(B) a few hundred O
(C) kO
(D) several MO
A MOSFET is sometimes called______________ JFET?
(A) many gate
(B) open gate
(C) insulated gate
(D) shorted gate
A MOSFET uses the electric field of a _______________to control the channel current?
(A) capacitor
(B) battery
(C) generator
(D) none of the above
At cut-off, the JFET channel is _____________?
(A) at its widest point
(B) completely closed by the depletion region
(C) extremely narrow
(D) reverse baised
A certain JFET data sheet gives VGS(off) = -4 V. The pinch-off voltage Vp is _____________?
(A) +4 V
(B) -4 V
(C) dependent on VGS
(D) data insufficient
The source terminal of a JEFT corresponds to _____________ of a vacuum tube?
(A) plate
(B) cathode
(C) grid
(D) none of the above
The channel of a JFET is between the ________________?
(A) gate and drain
(B) drain and source
(C) gate and source
(D) input and output