1. The process of deliberately adding impurities to a semiconductor is known as ?

Combining

Keying

Sintering

Doping

Answer: Doping

Explanation:


2. In N-type material. majority carriers would be ?

dopants

electrons

holes

slower

Answer: electrons

Explanation:


3. How many electrons are there in the valence orbit of a silicon atom within a crystal ?

8

4

14

1

Answer: 4

Explanation:


4. Elements with 1. 2 or 3 valence electrons usually make excellent ?

neutral

semiconductor

insulator

conductor

Answer: conductor

Explanation:


5. Which material may also be considered a semiconductor element ?

carbon

ceramic

argon

mica

Answer: carbon

Explanation:


6. In P type semiconductor material, minority carriers would be ?

holes

slower

dopants

electrons

Answer: electrons

Explanation:


7. In a semiconductor holes are present only ?

Conduction band

Valence band

Forbidden gap

All of these

Answer: Valence band

Explanation:


8. An electron device means the device in which the conduction of electrons takes place through ?

a gas

a gas, semiconductor or vacuum

vacuum

a semiconductor

Answer: a gas, semiconductor or vacuum

Explanation:


9. In P-N junction the avalanche breakdown voltage with semiconductor resistivity ?

decreases

increases

both the parameters are independent

decreases or increases in abrupt P-N junction

Answer: decreases

Explanation:


10. The diffused impurities with how many valence electrons are called donor atoms ?

4

3

5

0

Answer: 5

Explanation: