Deck 25: Basic Electrical System Theory and Repairs

Question 1

____________________ are used to make heat or to control the intensity of a load.

Answer 1

Resistors

Question 2

A permanent magnet meter is called a(n) ____________________.

Answer 2

analog meter

Question 3

A(n) ____ is a material with no, or few, free electrons.

A)insulator
B)conductor
C)diode
D)volt

Answer 3

A

Question 4

A(n) ____________________ is a pure element or compound that allows electricity to flow freely.

Question 5

All of the following statements are true EXCEPT:

A)voltage differential controls how strongly a load in a circuit is operated.
B)when voltage differential is lower than normal, a light will not be as bright or a heater defroster motor will not spin as fast.
C)if voltage drops as loads are added to a circuit, flow is increased in the circuit.
D)voltage differential is the difference between battery voltage at one end of a circuit and zero voltage on the ground side.

Question 6

Protons are composed of atoms, neutrons, and electrons.

Question 7

The term MOST-Likely used to describe a loss of voltage caused when current flows through a resistance is:

A)impedance
B)voltage drop
C)probe
D)short circuit

Question 8

The force needed to push or pull an electron out of its orbit is called ____________________.

Question 9

The lead-acid storage battery used in automobiles produces approximately 4.1 volts per cell.

Question 10

The component MOST-Likely to store electricity is the:

A)capacitor
B)relay
C)diode
D)transistor

Question 11

Which of the following statements is LEAST-Likely true?

A)Without insulation surrounding the conductor, electricity would take undesired paths.
B)Electricity never takes the path of least resistance to ground.
C)According to electron theory, electrons flow from an area with more negative charge to one with a more positive charge.
D)Resistance is an obstruction to electrical flow.

Question 12

Protons and neutrons are located in the nucleus (center) of the atom, while the electrons move about in orbits around the nucleus.

Question 13

Which of the following is the LEAST-Likely technique used to arrange a circuit?

A)Relay-series
B)Series
C)Parallel
D)Series-parallel

Question 14

A load is any device that turns electrical energy into another form of energy, such as light, sound, heat, or mechanical energy.

Question 15

While having a discussion, Technician A says that the longer a conductor is, the more resistance it has and the smaller its diameter, the less resistance it has. Technician B says that the larger its diameter, the less resistance it has. Who is correct?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 16

____________________ is the flow of electrons from one atom to another from an area that has excess negative charge to an area that is more positively charged.

Question 17

While having a discussion, Technician A says that magnetism is used to produce electrical current in the charging system. Technician B says that it is used to make the starter motor turn. Who is correct?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 18

A ____ is a magnetically controlled switch.

A)diode
B)transistor
C)capacitor
D)relay

Question 19

All of the following statements are true EXCEPT:

A)variable resistors, called rheostats or potentiometers, are also used to control the speed and intensity of electrical loads.
B)a rheostat varies current flow through the circuit as a movable wiper runs along a resistor.
C)a potentiometer varies the voltage in a circuit.
D)a variable resistor is commonly called a "volt," whether it is a potentiometer or a rheostat.

Question 20

In a vehicle, electricity powers the starting, ignition, lighting, and accessory systems.

Question 21

Provide definitions for the following terms: semiconductor, diode, and transistor.

Question 22

What is the difference between a series circuit and a parallel circuit?

Question 23

How would you use a test light?

Question 24

What is the difference between an open circuit and a short circuit?

Question 25

What is the purpose of a voltmeter?