The barrier potential of a silicon diode is approximately, ______.

(a)

0.7 V

(b)

0.3 V

(c)

2.0 V

(d)

2.2 V

A forward biased diode is treated as ________________.

(a)

An open switch with infinite resistance

(b)

A closed switch with a voltage drop of 0V

(c)

A closed switch in series with a battery voltage of 0.7V

(d)

A closed switch in series with a small resistance and a battery

The zener diode is primarily used as ______.

(a)

Rectifier

(b)

Amplifier

(c)

Oscillator

(d)

Voltage regulator

The light emitted in an LED is due to ______.

(a)

Recombination of charge carriers

(b)

Reflection of light due to lens action

(c)

Amplification of light falling at the junction

(d)

Large current capacity

The specific characteristic of a common emitter amplifier is _______________.

(a)

High input resistance

(b)

Low power gain

(c)

Signal phase reversal

(d)

Low current gain