Semiconductor Devices Test

Result

Semiconductor Devices Test - 39

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Weekly Quiz Competition

Question 1
4 / -1

Semi-conductor has phospholous as impurity then it will have __________ .

A

B

C

D
Question 2
4 / -1

Zener diode is used as __________

A
Full. wave rectifier

B
Amplifier

C
A.C. voltage regulator

D
D.C. voltage regulator
Question 3
4 / -1

Break down voltage of a diode is 5V. By which effect this breakdown occurs in diode ?

A
Only avalanche effect

B
Only zener effect

C
Avalanche or zener effect

D
None of the above
Question 4
4 / -1

When NPN transistor is used as an amplifier then __________

A
Electron moves from base to collector

B
Hole travels from emitter to base

C
Hole goes to emitter from base

D
Electron goes to base from collector
Question 5
4 / -1

For __________ gate, the output is 1 only when both input are `0\'

A
AND

B
NAND

C
OR

D
NOR
Question 6
4 / -1

In VLSI circuits more than __________ gates are contained.

A
1000

B
100

C
10

D
500
Question 7
4 / -1

The flow of valence electrons to the left means that holes are flowing.

A
Left

B
Right

C
Either way

D
None
Question 8
4 / -1

How many free electrons does a P-type semiconductor contain ?

A
Many

B
None

C
Only those produced by thermal energy

D
Same number as holes
Question 9
4 / -1

Suppose an intrinsic semi-conductor at room temperature has 1 billion free electrons at room temperature. If temperature changes to 75^o C, how many holes are there ?

A
Fewer than 1 billion

B
1 billion

C
More than 1 billion

D
Impossible to say
Question 10
4 / -1

Which of the following doesn't fit in the group ?

A
Conductor

B
Semi conductor

C
Four valence electrons

D
Crystal structure