Semiconductor E...

Statement -1: NAND and NOR gates are called digital building blocks.
Statement-2: The repeated use of NAND (or NOR) gates can produce all the basis or complicated gates.

Carbon, silicon and germanium have four valence electrons each. At room temperature the appropriate statement is

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:

In a semiconductor, which of the following statement is correct?

A zener diode, having breakdown voltage equal to $$15 V,$$ is used in a voltage regulator circuit shown in figure. The current through the diode is :

A pn photo diode is fabricated from a semiconductor with a band gap of 2.5 eV. It can detect a signal of wavelength :

When a P - N junction is unbiased, the junction current at equilibrium is :

Following diagram performs the logic function of :

Following truth table represent which logic gate :

Absence of electron in a valence band of semiconductor is called