16. A certain D-MOSFET is biased at VGS = 0V. Its data sheet specifies IDSS = 20 mA and VGS (off) = – 5V. The value of the drain current is ……………
(a) 20 mA
(b) 0 mA
(c) 40 mA
(d) 10 mA
17. An n-channel D-MOSFET with a positive VGS is operating in ……………
(a) the depletion-mode
(b) the enhancement-mode
(c) cut off
(d) saturation
18. A certain p-channel E-MOSFET has a VGS (th) = – 2V. If VGS = 0V, the drain current is ………
(a) 0 mA
(b) ID (on)
(c) maximum
(d) IDSS
19. In a certain common-source D-MOSFET amplifier, Vds = 3.2 V r.m.s. and Vgs = 280 mV r.m.s. The voltage gain is ……………
(a) 1
(b) 11.4
(c) 8.75
(d) 3.2
20. The main factor which differentiates a DEMOSFET from an E-only MOSFET is the absence of :
(a) P-N junctions
(b) Insulated gate
(c) Electrons
(d) Channel
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