PHY SEMICONDUCTOR CLASS 12

Semiconductor MCQ Test

1. Forbidden energy gap is largest in:

Conductor Semiconductor Insulator None

2. Pure semiconductor is:

Extrinsic Intrinsic Metal Alloy

3. Majority carriers in n-type:

Holes Electrons Protons Neutrons

4. Majority carriers in p-type:

Electrons Holes Ions Atoms

5. p-n junction is formed by:

Two metals Two insulators p-type and n-type None

6. Forward bias current:

Stops Flows easily Zero Infinite

7. Reverse bias current is:

Large Zero Very small Infinite

8. Diode allows current in:

Both One direction None Random

9. Rectifier converts:

DC to AC AC to DC Heat to light Light to heat

10. Silicon is:

Conductor Semiconductor Insulator Superconductor