ELECTRONIC DEVICES AND CIRCUITS QUIZ

True

False

Signal amplification is required

Rectification of the signal is required

Modulation of signal is required

Signal frequency control is required

Drift of holes

Diffusion of electrons

Diffusion of holes

Drift of electrons

Has higher energy than the electron in the valence band

Jumps to the top of the crystal

Loses its charge easily

Has lower energy than the electron in the valence band

Germanium diodes

Either of the above

None of these

Silicon diodes

Both frequency and intensity of incident radiation

Frequency of incident radiation

None of these

Intensity of incident radiation

An ohmic region at low voltage value followed by a saturation region at higher voltages

An ohmic region at large voltage values preceded by a saturation region at lower voltages

Only a saturation region

Only an ohmic region

The number of free electrons and holes increase but not by the same amount

The number of free electrons increases but the number of holes decreases

The number of free electrons increases

The number of free electrons and holes increase by the same amount

Green portion of spectrum

Red portion of spectrum

White portion of spectrum

Violet portion of spectrum

False

True