
What is full wave rectifier?
Important Questions on Semiconductor Devices

Identify the semiconductor devices whose characteristics are given below, in the order :

type of semi-conductor material
amount of doping
temperature
Which one of the following is correct?


The value of the resistor, , needed in the DC voltage regulator circuit shown here, equals:

Take the breakdown voltage of the zener diode used in the given circuit as . For the input voltage shown in the figure below, the time variation of the output voltage is: (Graphs drawn are schematic and not to the scale)



Two - photodiodes are fabricated from semiconductors with band gap of and respectively.
Choose the correct statement from the following.




In the given circuit, The current through battery is

and diodes start conducting at and respectively. In the following figure if diode connection are reversed, the value of changes by: (assume that the Ge diode has large breakdown voltage)

In the following circuit diagram, the current through the battery is

Two Zener diodes ( and ) having breakdown voltages of and respectively, are connected as shown in the circuit below. The output voltage variation with input voltage linearly increasing with time, is given by ()

A A.C. supply is connected between points and as shown in figure what will be the potential difference across the capacitor?

In case of a p-n junction diode at high value of reverse bias, the current rises sharply. The value of reverse bias is known as

What will be the current flowing through the resistor in the circuit shown, where the breakdown voltage of the Zener is





