ASK 11

Question

Answer 1

Step 1:

(3.2.1)

This ability to control itself can be used to great effect to regulate or stabilize a voltage source against supply or load variations.

The fact that the voltage across the diode in the breakdown region is almost constant turns out to be an important application of the zener diode as a voltage regulator.

So the zener diode acts as voltage regulator when connected in reverse bias.

The statement is false.

Answer 2

Step 1:

(3.2.2)

Tunnel diode is a high conductivity two terminal P-N juction diode having doping density about 1000 times higher as compared to an ordinary junction diode.

So for this reason it is used for high speed applications.

The statement is true.

Answer 3

Step 1:

(3.1.1)

Find the output ripple voltage.

Relation between rms volatge and ripple voltage is .

So .

Substitute .

So the output ripple voltage is .

Solution :

Output ripple voltage is .