VLSI Sheet Resistance MCQ Quiz – Objective Question with Answer for VLSI Sheet Resistance MCQ

21. What is the delay unit of 1.2-micron technology?

A. 0.064 nsec
B. 0.0064 nsec
C. 0.046 nsec
D. 0.0046 nsec

Answer: C

The delay unit of 1.2-micron technology is 0.046 nsec.

 

22. What is the transition point of an inverter?

A. Vdd
B. 0.5 Vdd
C. 0.25 Vdd
D. 2 Vdd

Answer: B

The transition point of an inverter is 0.5 Vdd. The transition point is the point where different phases of the same substance can be obtained in equilibrium.

 

23. What is the desired or safe delay value for 5-micron technology?

A. 0.3 nsec
B. 0.5 nsec
C. 0.1 nsec
D. 0.2 nsec

Answer: A

The desired or safe delay value for 5-micron technology is 0.3 nsec.

 

24. The resistance value associated with Rp.u is?

A. 2Rs
B. Rs
C. 4Rs
D. Rs/2

Answer: C

The resistance value associated with Rp.u. is 4Rs. Resistance is the measure of difficulty to pass an electric current through that material.

 

25. The resistance value associated with Rp.d. is?

A. 2Rs
B. Rs
C. 4Rs
D. Rs/2

Answer: B

The resistance value associated with Rp.d. is 1Rs. This is the measure of the difficulty to pass current through the pull-down device.

 

26. The overall delay of nMOS inverter pair is?

A. 4Ʈ
B. Ʈ
C. 5Ʈ
D. 2Ʈ

Answer: C

The overall delay of nMOS inverter pair is Ʈ+4Ʈ = 5Ʈ. This delay is the time taken for the input signal to get inverted and arrive at the output.

 

27. The inverter pair delay for inverters having 4:1 ratio is?

A. 4Ʈ
B. Ʈ
C. 5Ʈ
D. 2Ʈ

Answer: C

The inverter pair delay for inverters having a 4:1 ratio is 5Ʈ. This measure of delay is for two inverters, in which the output of the first is given as the input for the second inverter.

 

28. The asymmetry of resistance value can be eliminated by _______

A. decreasing the width
B. increasing the width
C. increasing the length
D. increasing the width

Answer: B

The asymmetry of resistance value can be eliminated by increasing the width of the p-device channel.

 

29. The ratio of rise time to fall time can be equated to _______

A. βn/βp
B. βp/βn
C. βp*βn
D. βp/2βn

Answer: A

The ratio of rise time to fall time can be equated to βn/βp. Rise time is the time taken by a signal to change from a specified low value to a specified high value. Fall time is the time taken for the amplitude of a pulse to decrease from a specified value to another specified value.

 

30. The value µn is equal to ___________

A. µp
B. 0.5µp
C. 1.5µp
D. 2.5µp

Answer: D

The value of µn = 2.5 µp. This shows that µn value is greater than that of the µp.

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