Free Printable VLSI workshop

1.

(1) What is the advantage of CMOS over BJT

a)

(a) NMOS & PMOS

b)

(b) Low Power

c)

(c) Scalability

d)

(d) all of the above

2.

2) Why VLSI integration?

a)

(a) Complexity

b)

(b) High Area

c)

(c) High cost

d)

(d) Less Area

3.

3) How Analog signals looks like?

a)

(a) Continuous in time

b)

(b) Continuous in amplitude

c)

(c) a & b

d)

(d) None

4.

(4) MOSFET?

a)

(a) Symmetric device

b)

(b) Asymmetric device

c)

(c) unipolar device

d)

(d) all of the above

5.

(5) MOSFET Input characteristics?

a)

(a) Vgs constant

b)

(b) Vgs variable

c)

(c) Vds constant

d)

(d) b & c

6.

(6) MOSFET Output characterstics?

a)

(a) Vgs constant

b)

(b) Vgs variable

c)

(c) Vds constant

d)

(d) a & c

7.

(7)Condition for MOSFET in saturation region?

a)

(a) Vgs > vth

b)

(b) vds ≥ vgs-vth

c)

(c) vds < vgs-vth

d)

(d) vgs ≥ vth & vds ≥ vgs-vth

8.

(7) Channel length modulation?

a)

(a) Less in short channel

b)

(b) high in short channel

c)

(c) High in long channel

d)

(d) None of the above

9.

(1) Tranconductance?

a)

(a) ΔIds/ΔVgs

b)

(b) ΔIds/ΔVds

c)

(c) ΔIds/ΔVbs

d)

(d) None of the above

10.

(10) Long channel MOSFET in saturation region acts as?

a)

a) Current source

b)

(b) voltage source

c)

(c) power source

d)

(d) None

11.

(1)N-MOSFET acts as?

a)

(a) Current sink

b)

(b) Current source

c)

(c) neither source nor sink

d)

(d) None of the above

12.

(1)P-MOSFET acts as?

(a) Current sink (b) Current source (c) neither source nor sink (d) None of the above

a)

(a) Current sink

b)

(b) Current source

c)

(c) neither source nor sink

d)

(d) None of the above

13.

(13)CMOS Technology defines?

a)

(a) Channel length

b)

(b) Channel width

c)

(c) both

d)

(d) None of the above

14.

(1)P-MOSFET source potential compare to drain?

a)

(a) Lower

b)

(b) Higher

c)

(c) more negative

d)

(d) None of the above

15.

(14)P-MOSFET input & output characteristics appear in which co-ordinate?

a)

(a) I

b)

(b) II

c)

(c) III

d)

(d) None of the above

16.

(16)Input impedance of Ideal MOSFET?

a)

(a) High

b)

(b) Low

c)

(c) moderate

d)

(d) None of the above

17.

(17)Output impedance of Ideal MOSFET?

a)

(a) High

b)

(b) Low

c)

(c) moderate

d)

(d) None of the above

18.

(18)Current mirror it mirrors the reference current?

a)

(a) True

b)

(b) False

c)

(c) neither one

d)

(d) None of the above

19.

(19)Common Source Amplifier which terminal is common to Input and Output?

a)

(a) Drain

b)

(b) Source

c)

(c) Source & Bulk

d)

(d) Gate

20.

(20)Gain and Phase of common source amplifier?

a)

(a) gm*R , 0º

b)

(b) gm*R , 180º

c)

(c) gm*R , 90

d)

(d) None of the above

VLSI workshop

Total questions: 20

Worksheet time: 15mins

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