quiz ni colette

Question 1

basically the parts or elements used in the making of any electrical construction project, developed and constructed for certain purposes

Answer 1

electrical materials

Question 2

control the flow of current in an electrical circuit; carry electrical current from the source to the load or current consuming apparatus; hold and secure wires to its fixtures inside and outside certain places

Answer 2

electrical materials

Question 3

Classification of Electrical Materials through Electrical Conductivity

Answer 3

conductors, insulators, semiconductors, superconductors

Question 4

an object or type of material that permits the flow of electric charges from one particle to another

Answer 4

conductors

Question 5

materials that impede the free flow of electrons

Answer 5

insulators

Question 6

particles do not permit the free flow of electric charges

Answer 6

insulators

Question 7

materials that exhibit behavior somewhere between that of conductors and that of insulators

Answer 7

semiconductor

Question 8

present very low resistance to the flow of current

Answer 8

conductors

Question 9

conduct very little current even when a large potential difference is applied

Answer 9

insulators

Question 10

exhibits intermediate conductivity

Answer 10

semiconductor

Question 11

has more available charge carriers than an insulator but fewer than a conductor

Answer 11

semiconductor

Question 12

can be used in the fabrication of resistors, capacitors, inductors, and transistors

Answer 12

semiconductor

Question 13

based on integrated circuits which can combine millions or even billions of transistors into one small package

Answer 13

semiconductor

Question 14

when they are at critical temperature, they suddenly become the perfect conductors

Answer 14

superconductors

Question 15

material’s resistance is zero

Answer 15

superconductor

Question 16

usually between absolute zero and 10 Kelvin

Answer 16

critical temperature

Question 17

Classification of Electrical Components

Answer 17

active components, passive components

Question 18

components that supply and control energy

Answer 18

active components

Question 19

components that respond to the flow of electrical energy and can dissipate or store energy

Answer 19

passive components

Question 20

an electrical component that restricts the flow of current in the circuit

Answer 20

resistor

Question 21

a two-terminal linear passive component made from two conductive plates with an insulator between them

Answer 21

capacitor

Question 22

it stores electrical energy when an electrical charge is forced onto its terminals from a power source

Answer 22

capacitor

Question 23

maintains the charge even after getting disconnected from the power source

Answer 23

capacitor

Question 24

a two-terminal passive electrical component; also known as coil or reactor

Answer 24

inductor

Question 25

stores electrical energy in the form of magnetic energy

Answer 25

inductor

Question 26

comprises a conductor, commonly wound into a coil

Answer 26

inductor

Question 27

consists of three terminals made of semiconductor material

Answer 27

transistor

Question 28

controls the flow of voltage or current and acts as a switch for electronic signals

Answer 28

transistor

Question 29

used to break the circuit

Answer 29

switch

Question 30

interrupting the current and to supply the current from one conductor to another conductor

Answer 30

switch

Question 31

works with the "on" and "off" mechanisms

Answer 31

switch

Question 32

made from a semiconductor material that allows current to flow in one direction

Answer 32

diode/light-emitting diode (LED)

Question 33

blocks the current which tries to go against the flow in a wire

Answer 33

diode/light-emitting diode (LED)

Question 34

a material or a piece of wire which is used to protect the components from destruction due to the excessive current flowing through them

Answer 34

fuse

Question 35

used to connect two or more devices

Answer 35

electrical wire/cable

Question 36

enables the transfer of electrical signals or power from one device to the other

Answer 36

electrical wire/cable

Question 37

a passive electrical device consisted of two coils of wire linked by an iron core or transformer core

Answer 37

transformer

Question 38

transfers electrical energy between two or more circuits

Answer 38

transformer

Question 39

used to convert chemical energy into electrical energy through electrochemical discharge reactions

Answer 39

battery

Question 40

converts mechanical energy into electrical energy by electromagnetic induction

Answer 40

generator

Question 41

Types of Electrical Generator

Answer 41

Dynamo, Alternator

Question 42

creates direct current using a commutator

Answer 42

dynamo

Question 43

converts mechanical energy to electrical energy in the form of alternating current

Answer 43

alternator

Question 44

Electrical Measuring Instruments

Answer 44

ammeters, voltmeters, ohmmeters, wattmeters

Question 45

Classifications of Electrical Measuring Instruments

Answer 45

Absolute Instruments, Secondary Instruments

Question 46

instruments that give the value of quantity to be measured in terms of the physical constants of the instruments and their deflection only, not measurable on a graduated scale

Answer 46

Absolute Instruments

Question 47

instruments that are calibrated and directly give the value of quantity to be measured

Answer 47

Secondary Instruments

Question 48

Types of Secondary Instruments

Answer 48

Indicating Instruments, Recording Instruments, Integrating Instruments

Question 49

instruments that are fitted with a pointer which moves over a calibrated scale and indicates the electric quantity to be measured directly on the scale

Answer 49

Indicating Instruments

Question 50

instruments that record the electrical quantity to be measured on a graph paper for a desired period

Answer 50

Recording Instruments

Question 51

instruments that measure the total quantity of electricity consumed in a circuit given time

Answer 51

Integrating Instruments

Question 52

measures electric current

Answer 52

ammeter

Question 53

to measure current, it is inserted in series with the circuit being tested

Answer 53

ammeter

Question 54

addition of this increases the resistance of the circuit by an amount equal to the internal resistance of the meter

Answer 54

ammeter

Question 55

used to measure the potential difference or voltage of a circuit

Answer 55

voltmeter

Question 56

instrument to determine resistance

Answer 56

ohmmeter

Question 57

consists of a battery, a meter movement calibrated to read ohms, and a resistor

Answer 57

ohmmeter

Question 58

a single instrument capable of measuring voltage, resistance, and current

Answer 58

multimeter

Question 59

most common multimeter

Answer 59

volt-ohm-milliammeter (VOM)

Question 60

measure electrical quantities of current and voltage that change in amplitude and direction periodically with time

Answer 60

AC meters

Question 61

for higher frequencies, the AC quantities are first converted to DC and then applied to a __________

Answer 61

D'Arsonval Movement

Question 62

simplest type of AC voltmeter

Answer 62

half-wave rectifier circuit

Question 63

one way of improving the sensitivity of a rectifier type of ac meter

Answer 63

full-wave rectification

Question 64

an instrument that measures DC power or real AC power

Answer 64

wattmeter

Question 65

uses fixed coils to indicate current in the circuit and movable coil to indicate voltage

Answer 65

wattmeter

Question 66

rated in terms of its maximum current, voltage, and power

Answer 66

wattmeter