Explore topic-wise MCQs in Vlsi.

This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Vlsi knowledge and support exam preparation. Choose a topic below to get started.

1.

When both nMOS and pMOS transistors of CMOS logic gates are ON, the output is:

A. 1 or Vdd or HIGH state
B. 0 or ground or LOW state
C. Crowbarred or Contention(X)
D. None of the mentioned
Answer» D. None of the mentioned
Discussion
2.

When both nMOS and pMOS transistors of CMOS logic design are in OFF condition, the output is:

A. 1 or Vdd or HIGH state
B. 0 or ground or LOW state
C. High impedance or floating(Z)
D. None of the mentioned
Answer» D. None of the mentioned
Discussion
3.

WHEN_BOTH_NMOS_AND_PMOS_TRANSISTORS_OF_CMOS_LOGIC_DESIGN_ARE_IN_OFF_CONDITION,_THE_OUTPUT_IS_:?$

A. 1 or Vdd or HIGH state
B. 0 or ground or LOW state
C. High impedance or floating(Z)
D. None of the mentioned
Answer» D. None of the mentioned
Discussion
4.

When both nMOS and pMOS transistors of CMOS logic gates are ON, the output is :$

A. 1 or Vdd or HIGH state
B. 0 or ground or LOW state
C. Crowbarred or Contention(X)
D. None of the mentioned
Answer» D. None of the mentioned
Discussion
5.

In CMOS logic circuit, the switching operation occurs because:

A. Both n-MOSFET and p-MOSFET turns OFF simultaneously for input ‘0’ and turns ON simultaneously for input ‘1’
B. Both n-MOSFET and p-MOSFET turns ON simultaneously for input ‘0’ and turns OFF simultaneously for input ‘1’
C. N-MOSFET transistor turns ON, and p-MOSFET transistor turns OFF for input ‘1’ and N-MOS transistor turns OFF, and p-MOS transistor turns ON for input ‘0’
D. None of the mentioned
Answer» D. None of the mentioned
Discussion
6.

In CMOS logic circuit the p-MOS transistor acts as:

A. Pull down network
B. Pull up network
C. Load
D. Short to ground
Answer» C. Load
Discussion
7.

In CMOS logic circuit the n-MOS transistor acts as:

A. Load
B. Pull up network
C. Pull down network
D. Not used in CMOS circuits
Answer» D. Not used in CMOS circuits
Discussion
8.

In positive logic convention, the true state is represented as:

A. 1
B. 0
C. -1
D. -0
Answer» B. 0
Discussion
9.

In negative logic convention, the Boolean Logic [1] is equivalent to:

A. +VDD
B. 0 V
C. -VDD
D. None of the mentioned
Answer» C. -VDD
Discussion