semiconductor Diode

Question 1

A ? is a two-terminal device that passes current of one polarity and blocks current of the opposite polarity.

Answer 1

Diode

Question 2

Which of the following is a failure mode of a silicon or germanium diode?

Answer 2

open failure mode

short failure mode

Question 3

The layer that forms between the P and N material in a PN junction is called the ? .

Answer 3

Depletion layer/region

Question 4

The maximum recurrent (or reverse) voltage the diode is rated to withstand is called ? .

Answer 4

peak inverse voltage

Question 5

The depletion region collapses because the positive terminal of the battery repels the holes on the P-type side and the negative terminal of the battery repels the electrons on the N-type side.

Answer 5

true

Question 6

To conduct current, the diode must be reverse biased.

Answer 6

false

To conduct current, the diode must be forward biased.

Question 7

? is the sudden, rapid, momentary movement of charges from one object to another.

Answer 7

Electrostatic discharge

Question 8

If the diode is reversed biased, the depletion region between the two materials will ? .

Answer 8

increase

Question 9

What should an employee wear to prevent static charges from accumulating in sensitive work areas?

Answer 9

ESD wrist and heel straps

Question 10

The diode can be used to change direct current to alternating current.

Answer 10

false

The diode can be used to change alternating current to direct current.

Question 11

What can be done to limit the buildup of static charges in an enclosed area?

Answer 11

control the humidity

Question 12

Based on the characteristic curve, what is the reverse breakdown voltage of the diode?

Answer 12

300v

Question 13

The anode and cathode are reversed on this diode.

anode –>{—-cathode

Answer 13

false

Question 14

A silicon diode typically has a mark (a solid line) on one end of the diode that identifies the cathode lead.

Answer 14

true

Question 15

The P-type material makes up the cathode of the diode, and the N-type makes up the anode of the diode.

Answer 15

false

The P-type material makes up the anode of the diode, and the N-type makes up the cathode of the diode.

Question 16

When the anode of a diode is connected to ? , the diode is reverse biased.

Answer 16

the negative terminal of a power source Correct

Question 17

When testing a diode with a digital multimeter (function switch set to Diode Test position, the red lead connected to the anode and the black lead connected to the cathode), what should be the expected reading?

Answer 17

The barrier voltage (0.7 V for a silicon diode or 0.3 V for a germanium diode)

Question 18

Which illustration represents a diode forward biased in series with a limiting resistor?

Answer 18

negative —I

Question 19

Which illustration represents a diode reverse biased in series with a limiting resistor?

Answer 19

negative —>I—-resistor –positive

Question 20

The illustration shows a diode connected to a meter to prevent reverse current flow through the meter.

Answer 20

True

–I

Question 21

Which illustration represents two silicon diodes used to protect the meter from excessive currents?

Answer 21

—meter—

—>I—-

—-i

Question 22

The illustration represents a diode and switch that allows the lamp to burn at either near half or full intensity when the ON/OFF switch is closed.

Answer 22

true

Question 23

The output in the circuit is ? .

Answer 23

6v + .7v

Question 24

The current in the circuit is ? .

Answer 24

I= Vr/R

Vr = source voltage - diode

Question 25

Which circuit will produce the output waveform in the illustration?

Answer 25

-9.7v