In a semiconductor, the energy gap between the valence band and conduction band is about________

The resistivity of pure germanium under the standard condition is about

When a pentavalent impurity is added to a pure semiconductor it becomes______

The impurity level in a semiconductor is about _______ of the pure semiconductor.

A forward biased PN junction has a resistance of the____

Which causes the barrier layer in a PN junction?

The majority carriers in a semiconductor are produced by

Which type of charge carrier has the greatest mobility?

The resistivity of a semiconductor depends upon its-

A Zener diode is used as a …………… voltage regulating device

Another name for Zener diode is ………… diode

If the load current drawn by unregulated power supply increases, the d.c. output voltage ………..

The switching function of semiconductor devices can be characterized with

AC power in a load can be controlled by using

Voltage commutation circuit can be converted into a current commutation by interchanging the positions of

In bipolar modulation, the carrier is symmetric about zero with amplitude equal to C_m, the PWM output

_____________ are used in power supplies to eliminates ripples / fluctuation and produce constant DC voltage at output.

_______________ consists of two 2 capacitors and one inductor.

Series pass and shunt regulators are the types of ________ regulator.