Deck 39: Electrical Fundamentals

Question 1

What type of material is indicated by this atomic structure?

A)Insulator
B)Coaxial
C)Semi-conductor
D)Conductor

Answer 1

Insulator

Question 2

This diagram indicates current flow using which theory of current flow?

A)Battery Theory
B)Conventional Theory
C)Electron Theory
D)Watts Theory

Answer 2

Conventional Theory

Question 3

Electrical power is calculated by ________.

A)Dividing voltage by current
B)Multiplying volts by ohms
C)Multiplying volts by current
D)None of these

Answer 3

Multiplying volts by current

Question 4

Which unit of electricity does the work in the circuit?

A)Ohm
B)Volt
C)Coulomb
D)Ampere

Question 5

The automotive battery is based on the principle of ________.

A)Electrochemistry
B)Piezoelectric energy
C)Photoelectricity
D)None of these

Question 6

Most carbon resistors indicate their electrical resistance by ________.

A)Shape
B)Printed numbers indicating resistance in ohms
C)Color coded markings
D)None of these

Question 7

Voltage supplied to a potentiometer may be called ________.

A)Leading voltage
B)Primary voltage
C)Reference voltage
D)None of these

Question 8

Which variable resistor is most likely used for a dash light dimmer control?

A)Piezoelectric
B)Potentiometer
C)Rheostat
D)None of these

Question 9

Electricity moving through a conductor produces a magnetic field. This principle is used in which of the following?

A)Relay
B)Starter motor
C)Ignition coil
D)All of these

Question 10

A rheostat usually has how many wires?

A)Two
B)Four
C)Three
D)None of these

Question 11

What term describes the movement of electrons from one atom to another?

A)Energy transfer
B)Electricity
C)Chain reaction
D)None of these

Question 12

A positively charged atom is called a(n) ________.

A)Neutron
B)Quark
C)Ion
D)None of these

Question 13

The outer electron shell is known as a(n) ________.

A)Unstable shell
B)Valence ring
C)Distant ring
D)None of these

Question 14

It is relatively easy to move an electron from the valence ring of a conductor.

Question 15

Insulators lose electrons in their outer shell easier than conductors.

Question 16

Semiconductors have how many electrons in their valence rings?

A)Less than four
B)More than four
C)Four
D)None of these

Question 17

Which of these is also known as electrical potential?

A)Volts
B)Ohms
C)Amps
D)None of these

Question 18

Electromotive force is another term for ________.

A)Resistance
B)Voltage
C)Current
D)None of these

Question 19

Which of these is the term used for electrical power?

A)Volts
B)Amps
C)Watts
D)None of these

Question 20

Which device produces electrical current resulting from the heating of two dissimilar conductors?

A)Volt meter
B)Thermocouple
C)Ammeter
D)None of these

Question 21

Which term describes electrical current resulting from pressure applied to certain crystals?

A)Photoelectricity
B)Thermodynamics
C)Piezoelectricity
D)None of these

Question 22

Technician A says that resistance increases as the diameter of a conductor increases. Technician B says that resistance increases as the temperature of a conductor increases. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 23

Which of these elements has the least resistance?

A)Copper
B)Gold
C)Silver
D)None of these

Question 24

A potentiometer usually has how many wires?

A)Four
B)Three
C)Two
D)None of these