NEETS MODULE 7; CHAPTER 1

Question 1

What is a solid-state device?

Answer 1

An electronic device that operates by virtue of the movement of electrons within a
solid piece of semiconductor material.

Question 2

Name three of the largest users of semiconductor devices.

Answer 2

. Space systems, computers, and data processing equipment.

Question 3

. What are the three particles that comprise an atom and state the type of charge they
hold?

Answer 3

Electrons-negative, protons-positive, and neutrons-neutral.

Question 4

What is the smallest particle into which an element can be broken down and still
retain all its original properties?

Answer 4

The atom.

Question 5

Define matter and list its three different states?

Answer 5

Anything that occupies space and has weight. Solid, liquid, and gas.

Question 6

What determines, in terms of energy bands, whether a substance is a good
insulator, semiconductor, or conductor?

Answer 6

The width of the forbidden band.

Question 7

Two of the most widely known semiconductors in use today are the ?

Answer 7

JUNCTION DIODE and TRANSISTOR

Question 8

new semicondutors?

Answer 8

ZENER DIODE, LIGHT-EMITTING DIODE,

FIELD EFFECT TRANSISTOR

Question 9

What is a negative ion?

Answer 9

Quanta.

Question 10

What is the term used to describe the sharing of valence electrons between two or
more atoms

Answer 10

Covalent bonding.

Question 11

Name the two types of current flow in a semiconductor

Answer 11

Electron flow and hole flow.

Question 12

. What is the name given to a piece of pure semiconductor material that has an equal
number of electrons and holes?

Answer 12

Intrinsic.

Question 13

TESTING A DIODE

Answer 13

The most convenient and quickest way of testing a

diode is with an ohmmeter

Question 14

What is the greatest threat to a diode?

Answer 14

heat

Question 15

When checking a diode with an ohmmeter, what is indicated by two high resistance
measurements?

Answer 15

The diode is open or has a high-forward resistance.

Question 16

what is The simplest rectifier circuit?

Answer 16

half-wave rectifier

Question 17

N-TYPE SEMICONDUCTOR?

Answer 17

is one that is doped with an N-TYPE or donor
impurity (an impurity that easily loses its extra electron to the semiconductor causing it to
have an excess number of free electrons).

Question 18

P-TYPE SEMICONDUCTOR?

Answer 18

is one which is doped with a P-TYPE or acceptor

impurity

Question 19

SEMICONDUCTOR DIODE PN JUNCTION DIODE?

Answer 19

device that makes use of the rectifying properties of a PN
junction to convert alternating current into direct current by permitting current flow in
only one direction.

Question 20

REVERSE BIAS?

Answer 20

is an external voltage that is connected across a PN junction so that its
voltage aids the junction and, thereby, offers a high resistance to the current flow through
the junction.