ELECTRONIC DEVICES AND CIRCUITS QUIZ

1 A

20 A

100 A

10 A

Green portion of spectrum

White portion of spectrum

Red portion of spectrum

Violet portion of spectrum

Copper containing traces of silicon

Induction hardened copper

Hard drawn copper

Pure annealed copper

Both A and R are true but R is not a correct explanation of A

A is false but R is true

A is true but R is false

Both A and R are true and R is correct explanation of A

An indirect band gap semiconductor

Direct band gap semiconductor

Narrowband gap semiconductor

Wideband gap semiconductor

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

10 eV

5 eV

2 eV

0.78 eV

Antiparallel to magnetic field

In the direction of current

Normal to both current and magnetic field

In arbitrary direction

Only for the positive half cycle of the input signal

For full cycle

For less than fourth cycle

Only for the negative half cycle of the input signal

A hole can have at room temperature

Must be given to an electron move to conduction band

None of these

An electron can have at room temperature