EASY
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Write a distinguishing features between conductors, semiconductors and insulators on the basis of energy gap and Conductivity.

Important Questions on Semiconductor Electronics: Materials, Devices and Simple Circuits

EASY

State anyone difference between the energy band diagram of conductors and that of insulators.

EASY
Which of the energy band diagrams shown in the figure corresponds to that of a semiconductor?
EASY
The band gaps of an insulator, conductor and semiconductor are respectively Eg1, Eg2 and Eg3. The relationship between them is given as _____.
EASY
Consider a situation in which reverse biased current of a particular P-N junction increases when it is exposed to a light of wavelength 621 nm. During this process, enhancement in carrier concentration takes place due to generation of hole-electron pairs. The value of band gap is nearly.
EASY
What will be the effect of increasing the temperature on the conductivity of pure semiconductor?
MEDIUM
What is NAND gate. Draw its symbol. Write truth table and draw its output single in wave form.
EASY
Draw separate energy band diagrams for conductors, semi-conductors and insulators and label each of them.