Explore topic-wise MCQs in Vlsi.

This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Vlsi knowledge and support exam preparation. Choose a topic below to get started.

1.

BJT gain should be ______ to avoid latch-up effect.

A. increased
B. decreased
C. should be maintained constant
D. changed randomly
Answer» C. should be maintained constant
Discussion
2.

Latch-up is brought about by BJTs __________

A. with positive feedback
B. with negative feedback
C. with no feedback
D. without BJT
Answer» B. with negative feedback
Discussion
3.

Latch-up is the generation of __________

A. low impedance path
B. high impedance path
C. low resistance path
D. high resistance path
Answer» B. high impedance path
Discussion
4.

To reduce latch-up effect substrate resistance should be high.

A. true
B. false
Answer» C.
Discussion
5.

The reduction in carrier lifetime brings about __________

A. reduction in alpha
B. reduction in beta
C. reduction in current
D. reduction in voltage
Answer» C. reduction in current
Discussion
6.

The parasitic PNP transistor has the effect of _______ carrier lifetime.

A. increasing
B. decreasing
C. exponentially decreasing
D. exponentially increasing
Answer» C. exponentially decreasing
Discussion
7.

Which one of the following is the main factor for reducing the latch-up effect?

A. reduced p-well resistance
B. reduced n-well resistance
C. increased n-well resistance
D. increased p-well resistance
Answer» C. increased n-well resistance
Discussion
8.

Which process produces a circuit which is less prone to latch-up effect?

A. CMOS
B. nMOS
C. pMOS
D. BiCMOS
Answer» E.
Discussion
9.

Latch-up can be induced by __________

A. incident radiation
B. reflected radiation
C. etching
D. diffracted radiation
Answer» B. reflected radiation
Discussion
10.

In latch-up condition, parasitic component gives rise to __________ conducting path.

A. low resistance
B. high resistance
C. low capacitance
D. high capacitance
Answer» B. high resistance
Discussion