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VLSI V5 EFC-DELHI-19THAUGUST2024

1 / 50

Which can bring about variations in threshold voltage?

2 / 50

Electromigration is a

3 / 50

NMOS transistors are used as pass transistor, and a gate voltage (V GS ) much larger than the threshold voltage(V THN ) is applied. On the source side of this NMOS pass transistor, a voltage V DD is applied. What will be the drain voltage of this NMOS transistor.? Please assume that the body of the transistor is grounded.

4 / 50

Consider the first level metal interconnect that has cross sectional dimensions of w= 0.35 μm and t=0.7 μm and runs over an oxide layer that has a thickness of Tox=0.9 μm. The capacitance per unit length is________

5 / 50

Which of the following representation of a design has the highest degree of abstraction

6 / 50

Which among the following is a variable cost in standard cell based design

7 / 50

Pass transistors are transistors used as ________

8 / 50

How will the number -8`d4 ( in Verilog) be internally represented as bits?

9 / 50

Finite state machines are used for

10 / 50

Approach used for design process are

11 / 50

Submicron CMOS technology is

12 / 50

Which of the following statements/are true with respect to testing?

13 / 50

Which of the following statement is incorrect about a Verilog function?

14 / 50

Rise time and fall time can be equalized by

15 / 50

In inverter during logic 1 to 0 transition, capacitance discharges at

16 / 50

Size of the die is determined using

17 / 50

The size of a transistor is usually defined in terms of its

18 / 50

Which of the following statements about non-blocking assignments in Verilog is incorrect?

19 / 50

The magnetic core memories have been replaced by semiconductor RAMs, why?

20 / 50

______________ Impurities are added to the wafer of the crystal.

21 / 50

As the channel length is scaled down, influence of mobility

22 / 50

Stick diagrams are those which convey layer information through?

23 / 50

Which of the following statements is incorrect about code coverage

24 / 50

In nMOS inverter configuration depletion mode device is called as ________

25 / 50

Mobility depends on ________

26 / 50

How many transistors are required to implement a X-input dynamic CMOS logic?

27 / 50

What are the advantages of design rules?

28 / 50

What are the advantages of BiCMOS?

29 / 50

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

30 / 50

Conducting layer is separated from substrate using

31 / 50

What is the purpose of carrying out hardware software partitioning for a system?

32 / 50

Contact cuts should be ____ apart.

33 / 50

A bit can be stored when

34 / 50

For which of the following figures of merit, dedicated hardware can be better than the same function implemented as software running on a general purpose processor.

35 / 50

In MOS transistors _______________ is used for their gate.

36 / 50

How many transistors might bring up latch up effect in p-well structure?

37 / 50

Increasing fan-out ____________ the propagation delay.

38 / 50

Which can bring about variations in threshold voltage?

39 / 50

Simulators are available for

40 / 50

Ids depends on ___________

41 / 50

Computer-assisted graphical entry is done through

42 / 50

An event-based RTL simulator keeps the events ordered in the event queue according to

43 / 50

In basic inverter circuit _____________ is connected to ground.

44 / 50

_______ layer should be over ______ layer.

45 / 50

In CMOS logic circuit, the switching operation occurs because:

46 / 50

The oxide layer below the first metal layer is deposited using__________

47 / 50

The nature of physical layout verification software depends on

48 / 50

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

49 / 50

The area of CMOS inverter is proportional to

50 / 50

Which of the following data types can store value during Verilog simulation