# VLSI Area Capacitance MCQ Quiz – Objective Question with Answer for VLSI Area Capacitance MCQ

1. Conducting layer is separated from substrate using ____________

A. dielectric layer
B. silicon layer
C. metal layer
D. diffusion layer

Conducting layer is separated from the substrate by using a dielectric or insulating layer as both are electrical insulators that can be polarized by an applied electric field.

2. Gate to channel capacitance of 5-micron technology is _____ pF × 10(-4) (micrometer)2.
A. 1
B. 2
C. 4
D. 0.4

Gate to channel capacitance of 5-micron technology is 4 pF × 10(-4) (micrometer)2. It is the standard typical calculated value.

3. Area capacitance of diffusion region of 2-micron technology is _____ pF × 10(-4) (micrometer)2.

A. 2
B. 2.75
C. 3.75
D. 4.75

Area capacitance of the diffusion region of 2-micron technology is 3.75 pF × 10(-4) (micrometer)2.

4. What is the relative capacitance of the diffusion region of 5-micron technology?

A. 1
B. 0.25
C. 1.25
D. 2

The relative capacitance of the diffusion region of 5-micron technology is 0.25. The relative value is calculated by comparing two values of the same type.

5. A feature size square has ___________

A. L > W
B. W > L
C. L = W
D. L > d

A feature size square has L = W and its gate to channel capacitance value is called as square Cg.

6. What is the standard square Cg value of a 5-micron technology?

A. 0.01 pF
B. 0.1 pF
C. 1 pF
D. 10 pF

The standard square Cg value of a 5-micron technology is 0.01 pF. This standard square Cg value can be calculated by using the area of the standard square value and the capacitance value.

7. What is the standard square Cg value of a 1.2-micron technology?

A. 0.01 pF
B. 0.0023 pF
C. 0.023 pF
D. 0.23 pF

The standard square Cg value of a 1.2-micron technology is 0.0023 pF.

8. Relative area for L = 20λ and W = 3λ is?
A. 10
B. 15
C. 1/15
D. 1/10

Relative area for L = 20λ and W = 3λ is = (20λ × 3λ) / (2λ × 2λ) = 15. Relative area has no unit as two quantities of same type have been used.

9. What is the value of gate capacitance?

A. 0.25 square Cg
B. 1 square Cg
C. 1.25 square Cg
D. 1.5 square Cg

The value of gate capacitance is one square Cg. This is the standard value.

10. What is the delay unit of 5-micron technology?
A. 1 nsec
B. 0.1 nsec
C. 0.01 nsec
D. 1 sec