AE TEST

A voltage regulator circuit

• Increases input voltage

• maintain a constant voltage

• Both a & b

• None of the above

___________is a measure of the ability of the power supply to maintain its output voltage given changes in the input line voltage

• Efficiency

• Load regulation

• Line regulation

• Both b & c

Load regulation is the capability to maintain a constant voltage (or current) level on the output channel of a power supply despite changes in the

• input current

• supply's load

• frequency

• input line voltage

The width of the intrinsic region should be _______ the space charge width of a normal pn junction.

• larger than

• smaller than

• same

• Both a & b

The value of the reverse voltage at which the whole intrinsic layer is swept of charge carriers is called

• Drift voltage

• Swept-out voltage

• Barrier voltage

• Reverse breakdown voltage

A Tunnel diode is a heavily doped p-n junction diode that exhibits

• negative voltage

• positive voltage

• negative resistance

• positive resistance

Apllication of Tunnel diode is

• oscillators

• amplifiers

• low voltage high frequency switching applications

• All of the above

The ______ material is commonly used to make the tunnel diodes

• germanium

• gallium arsenide

• only silicon

• Both a & b

A silicon diode has a voltage drop of

• 0.6 to 0.7 volts

• 0.2 to 0.3 volts

• 0.3 volts

• 0.8 volts

Schottky diode is also known as

• surface barrier diode

• majority carrier device

• hot-electron diode

• All of the above