Give the Schematic representation of valence band, conduction band, and forbidden energy gap and draw energy band structure of
(a) Insulators
(b) Semiconductors
(c) Metals?

What is electronics?

What are the advantages and Limitations of FM?

Write the limitations of AM.

What are the advantages of FM

Write the limitations of FM.

What are the application of satellite communication?

Write the applications of internet.

Why space wave propagation is limited upto small distance over earth's surface?

Explain why TV transmission towers made high.

What does the term LOS communication mean? Name the types of waves that are used for this communication. What is the range of their frequency?

Why ground wave cannot be used for long distance communication using high frequency?

List the applications of light emitting diode.

Give the principle of solar cells.

Give applications of RADAR.