List of top Physics Questions on Semiconductor electronics: materials, devices and simple circuits asked in NEET (UG), VITEEE

Application of a forward bias to a p-n junction:

Carbon, silicon and germanium atoms have four valence electrons each. Their valence and conduction bands are separated by energy band gaps represented by (Eg)_C , (Eg)_Si  and (Eg)_Ge  respectively. Which one of the following relationships is true in their case?

Choose the only false statement from the following

Of the diodes shown in the following diagrams, which one of the diode is reverse biased ?

In semiconductors at a room temperature

The peak voltage in the output of a half-wave diode rectifier fed with a sinusoidal signal without a filter is 10V. The d. c. component of the output voltage is

In a p–n junction photocell, the value of the photo electromotive force produced by monochromatic light is proportional to

The output of OR gate is 1

$A n-p-n$ transistor conducts when

Barrier potential of a p-n junction diode does not depend on:

If a full wave rectifier circuit is operating from 50 Hz mains, the fundamental frequency in the ripple will be:

A n-p-n transistor conducts when

Reverse bias applied to a junction diode

Following diagram performs the logic function of:

For the given circuit of p-n junction diode which is correct :-

For a common emitter circuit if \(\frac{IC}{IE}=0.98\) then current gain for common emitter circuit will be

From the following diode circuit. Which diode in forward biased condition:

Given truth table is correct for:

A	B	Y
1	1	1
1	0	0
0	1	0
0	0	0

A p-n junction diode can be used as

Depletion layer consists of