T6 - Electrical components [4 Exam Questions - 4 Groups]

Question 1

What electrical component is used to oppose the flow of current in a DC circuit?

A. Inductor

B. Resistor

C. Voltmeter

D. Transformer

Answer 1

B. Resistor

Question 2

What type of component is often used as an adjustable volume control?

A. Fixed resistor

B. Power resistor

C. Potentiometer

D. Transformer

Answer 2

C. Potentiometer

Question 3

What electrical parameter is controlled by a potentiometer?

A. Inductance

B. Resistance

C. Capacitance

D. Field strength

Answer 3

B. Resistance

Question 4

What electrical component stores energy in an electric field?

A. Resistor

B. Capacitor

C. Inductor

D. Diode

Answer 4

B. Capacitor

Question 5

What type of electrical component consists of two or more conductive surfaces separated by an insulator?

A. Resistor

B. Potentiometer

C. Oscillator

D. Capacitor

Answer 5

D. Capacitor

Question 6

What type of electrical component stores energy in a magnetic field?

A. Resistor

B. Capacitor

C. Inductor

D. Diode

Answer 6

C. Inductor

Question 7

What electrical component is usually composed of a coil of wire?

A. Switch

B. Capacitor

C. Diode

D. Inductor

Answer 7

D. Inductor

Question 8

What electrical component is used to connect or disconnect electrical circuits?

A. Magnetron

B. Switch

C. Thermistor

D. All of these choices are correct

Answer 8

B. Switch

Question 9

What electrical component is used to protect other circuit components from current overloads?

A. Fuse

B. Capacitor

C. Inductor

D. All of these choices are correct

Answer 9

A. Fuse

Question 10

Which of the following battery types is rechargeable?

A. Nickel-metal hydride

B. Lithium-ion

C. Lead-acid gel-cell

D. All of these choices are correct

Answer 10

D. All of these choices are correct

Question 11

Which of the following battery types is not rechargeable?

A. Nickel-cadmium

B. Carbon-zinc

C. Lead-acid

D. Lithium-ion

Answer 11

B. Carbon-zinc

Question 12

What class of electronic components is capable of using a voltage or current signal to control current flow?

A. Capacitors

B. Inductors

C. Resistors

D. Transistors

Answer 12

D. Transistors

Question 13

What electronic component allows current to flow in only one direction?

A. Resistor

B. Fuse

C. Diode

D. Driven Element

Answer 13

C. Diode

Question 14

Which of these components can be used as an electronic switch or amplifier?

A. Oscillator

B. Potentiometer

C. Transistor

D. Voltmeter

Answer 14

C. Transistor

Question 15

Which of the following components can be made of three layers of semiconductor material?

A. Alternator

B. Transistor

C. Triode

D. Pentagrid converter

Answer 15

B. Transistor

Question 16

Which of the following electronic components can amplify signals?

A. Transistor

B. Variable resistor

C. Electrolytic capacitor

D. Multi-cell battery

Answer 16

A. Transistor

Question 17

How is the cathode lead of a semiconductor diode usually identified?

A. With the word cathode

B. With a stripe

C. With the letter C

D. All of these choices are correct

Answer 17

B. With a stripe

Question 18

What does the abbreviation LED stand for?

A. Low Emission Diode

B. Light Emitting Diode

C. Liquid Emission Detector

D. Long Echo Delay

Answer 18

B. Light Emitting Diode

Question 19

What does the abbreviation FET stand for?

A. Field Effect Transistor

B. Fast Electron Transistor

C. Free Electron Transition

D. Field Emission Thickness

Answer 19

A. Field Effect Transistor

Question 20

What are the names of the two electrodes of a diode?

A. Plus and minus

B. Source and drain

C. Anode and cathode

D. Gate and base

Answer 20

C. Anode and cathode

Question 21

What are the three electrodes of a PNP or NPN transistor?

A. Emitter, base, and collector

B. Source, gate, and drain

C. Cathode, grid, and plate

D. Cathode, drift cavity, and collector

Answer 21

A. Emitter, base, and collector

Question 22

What at are the three electrodes of a field effect transistor?

A. Emitter, base, and collector

B. Source, gate, and drain

C. Cathode, grid, and plate

D. Cathode, gate, and anode

Answer 22

B. Source, gate, and drain

Question 23

What is the term that describes a transistor’s ability to amplify a signal?

A. Gain

B. Forward resistance

C. Forward voltage drop

D. On resistance

Answer 23

A. Gain

Question 24

What is the name for standardized representations of components in an electrical wiring diagram?

A. Electrical depictions

B. Grey sketch

C. Schematic symbols

D. Component callouts

Answer 24

C. Schematic symbols

Question 25

What is component 1 in figure T1? A. Resistor B. Transistor C. Battery D. Connector

Answer 25

A. Resistor

Question 26

What is component 2 in figure T1? A. Resistor B. Transistor C. Indicator lamp D. Connector

Answer 26

B. Transistor

Question 27

What is component 3 in figure T1? A. Resistor B. Transistor C. Lamp D. Ground symbol

Answer 27

C. Lamp

Question 28

What is component 4 in figure T1? A. Resistor B. Transistor C. Battery D. Ground symbol

Answer 28

C. Battery

Question 29

What is component 6 in figure T2? A. Resistor B. Capacitor C. Regulator IC D. Transistor

Answer 29

B. Capacitor

Question 30

What is component 8 in figure T2? A. Resistor B. Inductor C. Regulator IC D. Light emitting diode

Answer 30

D. Light emitting diode

Question 31

What is component 9 in figure T2? A. Variable capacitor B. Variable inductor C. Variable resistor D. Variable transformer

Answer 31

C. Variable resistor

Question 32

What is component 4 in figure T2? A. Variable inductor B. Double-pole switch C. Potentiometer D. Transformer

Answer 32

D. Transformer

Question 33

What is component 3 in figure T3? A. Connector B. Meter C. Variable capacitor D. Variable inductor

Answer 33

D. Variable inductor

Question 34

What is component 4 in figure T3? A. Antenna B. Transmitter C. Dummy load D. Ground

Answer 34

A. Antenna

Question 35

What do the symbols on an electrical circuit schematic diagram represent? A. Electrical components B. Logic states C. Digital codes D. Traffic nodes

Answer 35

A. Electrical components

Question 36

Which of the following is accurately represented in electrical circuit schematic diagrams? A. Wire lengths B. Physical appearance of components C. The way components are interconnected D. All of these choices are correct

Answer 36

C. The way components are interconnected

Question 37

Which of the following devices or circuits changes an alternating current into a varying direct current signal? A. Transformer B. Rectifier C. Amplifier D. Reflector

Answer 37

B. Rectifier

Question 38

What best describes a relay? A. A switch controlled by an electromagnet B. A current controlled amplifier C. An optical sensor D. A pass transistor

Answer 38

A. A switch controlled by an electromagnet

Question 39

What type of switch is represented by component 3 in figure T2? A. Single-pole single-throw B. Single-pole double-throw C. Double-pole single-throw D. Double-pole double-throw

Answer 39

A. Single-pole single-throw

Question 40

Which of the following can be used to display signal strength on a numeric scale? A. Potentiometer B. Transistor C. Meter D. Relay

Answer 40

C. Meter

Question 41

What type of circuit controls the amount of voltage from a power supply? A. Regulator B. Oscillator C. Filter D. Phase inverter

Answer 41

A. Regulator

Question 42

What component is commonly used to change 120V AC house current to a lower AC voltage for other uses? A. Variable capacitor B. Transformer C. Transistor D. Diode

Answer 42

B. Transformer

Question 43

Which of the following is commonly used as a visual indicator? A. LED B. FET C. Zener diode D. Bipolar transistor

Answer 43

A. LED

Question 44

Which of the following is used together with an inductor to make a tuned circuit? A. Resistor B. Zener diode C. Potentiometer D. Capacitor

Answer 44

D. Capacitor

Question 45

What is the name of a device that combines several semiconductors and other components into one package? A. Transducer B. Multi-pole relay C. Integrated circuit D. Transformer

Answer 45

C. Integrated circuit

Question 46

What is the function of component 2 in Figure T1? A. Give off light when current flows through it B. Supply electrical energy C. Control the flow of current D. Convert electrical energy into radio waves

Answer 46

C. Control the flow of current

Question 47

What is a simple resonant or tuned circuit? A. An inductor and a capacitor connected in series or parallel to form a filter B. A type of voltage regulator C. A resistor circuit used for reducing standing wave ratio D. A circuit designed to provide high fidelity audio

Answer 47

A. An inductor and a capacitor connected in series or parallel to form a filter

Question 48

Which of the following is a common reason to use shielded wire? A. To decrease the resistance of DC power connections B. To increase the current carrying capability of the wire C. To prevent coupling of unwanted signals to or from the wire D. To couple the wire to other signals

Answer 48

C. To prevent coupling of unwanted signals to or from the wire