Chapter 18 - Electronics - 4

Chapter 18 - Electronics - 4

1. A combination of p-type and N type substance give rise to:

a) P-N junction
b) All of the above
c) p-p junction
d) N-N junction

2. Depletion region carries:

a) All
b) Negative charge
c) No charge
d) Positive charge

3. Potential barrier in a diode helps in moving:

a) Stops the mutual movement of both hole and electrons
b) Electrons from, N-type
c) Holes from p-type to n-type
d) None of the above

4. When p-type, of a P-N junction, is connected to positive and N-type to the negative terminal of battery the P-N junction is said to behave as:

a) Forward biased
b) Transistor
c) Reversed biased
d) Neutral

5. The graph which shows the relation of biased voltage verses current through a p-n junction is called:

a) Diode current graph
b) Diode voltage graph
c) Current biased voltage graph
d) Diode graph

6. A forward biased p-n junction practically offers:

a) Very low resistance
b) None
c) Very high resistance
d) Zero resistance

7. If a reverse current of a reverse biased junction is increased to a maximum value then:

a) Diode junction may breaks down
b) Diode becomes more efficient
c) Voltage drops to zero
d) None

8. Process of conversion of AC into DC is called:

a) Rectification
b) Amplification
c) Magnification
d) Purification

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