VLSI Quiz

In depletion mode, source and drain are connected by

• insulating channel

• conducing channel

• Vdd

• Vss

In MOS transistors, _____ is used for their gate

• metal

• silicon-di-oxide

• polysilicon

• gallium

The gate region consists of

• insulating layer

• conducting layer

• lower metal layer

• p type layer

The condition for non saturated region is

• Vds = Vgs – Vt

• Vgs lesser than Vt

• Vds lesser than Vgs – Vt

• Vds greater than Vgs – Vt

In enhancement mode, device is in _________ condition

• conducting

• non conducting

• partially conducting

• insulating

The condition for non conducting mode is

• Vds lesser than Vgs

• Vgs lesser than Vds

• Vgs = Vds = 0

• Vgs = Vds = Vs = 0

pMOS is

• donor doped

• acceptor doped

• all of the mentioned

• none of the mentioned

In N channel MOSFET which is the more negative of the elements?

• source

• gate

• drain

• source and drain

Enhancement mode MOSFETs are more commonly used as

• switches

• resistors

• buffers

• capacitor

Depletion mode transistor should be large.

• true

• false