Question 1

The lines shown on the head of bolt 2 indicate: 
A)it is a SAE grade 3.
B)it is rarely used.
C)it is aircraft quality.
D)it is an SAE grade 5.

Accepted Answer

The lines on the head of bolt 2 indicate that it is an SAE grade 5 bolt. The presence of these lines is a common identification method for SAE grade 5 bolts and is not indicative of aircraft quality or rarity.

Question 2

Technician A says all electrical tools, unless they are the double-insulated type, must be grounded. Technician B says that even a properly grounded tool could cause a shock if an easier path to ground is available to the electrical current. Who is correct?
A)A only
B)B only
C)Both A and B
D)Neither A nor B

Accepted Answer

Technician A is correct that all electrical tools that are not double-insulated must be grounded to prevent electrical shock. Technician B is also correct that even a properly grounded tool could cause a shock if there is an easier path to ground available for the electrical current, such as through a person's body. Therefore, both technicians are correct.

Question 3

A series circuit has:
A)one electrical path.
B)two electrical paths.
C)one electrical path controlling multiple electrical paths.
D)two electrical paths controlling one electrical path.

Accepted Answer

A series circuit has only one electrical path, where the current flows through each component one after the other.

Question 4

Technician A says that the prefix K means that the technician should multiply the reading by 1,000. Technician B says that the technician should multiply by .001. Who is correct?
A)A only
B)B only
C)Both A and B
D)Neither A not B

Accepted Answer

The prefix K (kilo-) means that the value should be multiplied by 1,000, making Technician A correct.

Question 5

List the most common metric units in automotive service.

Accepted Answer

The answer of List the most common metric units in...

Question 6

Parallel circuits will always have each of the following characteristics EXCEPT:
A)equal voltage supply per path.
B)equal current flow per path.
C)multiple electrical paths.
D)equal or different resistance per path.

Accepted Answer

In parallel circuits, the voltage across each path is equal, but the current flow can vary depending on the resistance of each path.

Question 7

What are brake lathes, and what are they used for?

Accepted Answer

The answer of What are brake lathes, and what are...

Question 8

The best wrench to use when loosening a bleeder screw is a/an:
A)12 point socket
B)open end wrench
C)six point bleeder valve wrench
D)line wrench

Accepted Answer

A six point bleeder valve wrench is specifically designed to fit bleeder screws securely, minimizing the risk of rounding off the screw.

Question 9

Technician A says that the most common use of a dial indicator is to measure the runout in a disc brake rotor. Technician B says that feeler gauges are used to measure disc brake rotor runout. Who is correct?
A)A only
B)B only
C)Both A and B
D)Neither A nor B

Accepted Answer

Technician A is correct. A dial indicator is the most common tool used to measure runout in a disc brake rotor, while feeler gauges are used to measure the thickness of brake pads and clearance between components. Technician B is incorrect.

Question 10

List types of precision measuring tools.

Accepted Answer

The answer of List types of precision measuring tools....

Question 11

An electrical circuit using 12 volts and 5 amps of current would have a resistance of:
A)2.4 ohms
B).2 ohms
C)1 ohm
D)12 ohms

Accepted Answer

The resistance can be calculated using Ohm's Law, which states that resistance (R) equals voltage (V) divided by current (I). So, R = V / I = 12 volts / 5 amps = 2.4 ohms.

Question 12

Electrical theory is being discussed. Technician A says in a series circuit, the electrical have load devices are connected to form one current path to and from the power source. Technician B says in a parallel circuit, the electrical loads are connected to form more than one current path to and from the power source. Who is correct?
A)A only
B)B only
C)Both A and B
D)Neither A nor B

Accepted Answer

Both Technician A and Technician B are correct. In a series circuit, the electrical load devices or components are connected one after the other, forming a single current path to and from the power source. In a parallel circuit, the electrical loads are connected to form more than one current path to and from the power source, which allows for different loads to receive different currents.

Question 13

Brake cleaning is being discussed. Technician A says brake dust can be removed with a blowgun if the area has been wetted down first. Technician B says a negative-pressure enclosure can be used to safely contain brake dust in the workplace. Who is correct?
A)A only
B)B only
C)Both A and B
D)Neither A nor B

Accepted Answer

Technician B is correct because using a negative-pressure enclosure is a safe method to contain brake dust. Technician A's method is not recommended as it can still release harmful dust into the air.

Question 14

Explain what an outside micrometer or vernier caliper may be used for during brake repairs.

Accepted Answer

The answer of Explain what an outside micrometer or vernier...

Question 15

A __________ scale is a fine auxillary scale that indicates fractional parts of a larger scale.

Accepted Answer

The answer of A __________ scale is a fine auxillary...

Question 16

Give an example of the type brake component measurement you would make using an outside micrometer.

Accepted Answer

The answer of Give an example of the type brake...

Question 17

Which of the following statements is true? A. Celsius temperature for the freezing point of water is 0 degrees. B. The boiling point of water measured on the Fahrenheit scale is 212 degrees.
A)A only
B)B only
C)Both A and B
D)Neither A nor B

Accepted Answer

Option A is true as the freezing point of water on the Celsius scale is 0 degrees. 
Option B is also true as the boiling point of water on the Fahrenheit scale is 212 degrees.

Question 18

To measure voltage in an electronic circuit, a technician should use a(n):
A)analog multimeter.
B)LED testlight.
C)DMM.
D)self-powered testlight.

Accepted Answer

A DMM (digital multimeter) is the most accurate and reliable tool for measuring voltage in an electronic circuit. Analog multimeters are less precise and can be affected by fluctuations in the circuit. LED test lights and self-powered test lights are primarily used for testing continuity and detecting voltage, not for precise voltage measurements.

Question 19

Technician A says that a liter is slightly smaller in volume than a U.S. quart. Technician B says that 3.78 liters equal one U.S. gallon. Who is correct?
A)A only
B)B only
C)Both A and B
D)Neither A nor B

Accepted Answer

The answer of Technician A says that a liter is...

Question 20

What are the most common tubing tools?

Accepted Answer

The answer of What are the most common tubing tools?...

Quiz 2: Principles and Theories of Operation

The lines shown on the head of bolt 2 indicate:

Technician A says all electrical tools, unless they are the double-insulated type, must be grounded. Technician B says that even a properly grounded tool could cause a shock if an easier path to ground is available to the electrical current. Who is correct?

A series circuit has:

Technician A says that the prefix K means that the technician should multiply the reading by 1,000. Technician B says that the technician should multiply by .001. Who is correct?

List the most common metric units in automotive service.

Parallel circuits will always have each of the following characteristics EXCEPT:

What are brake lathes, and what are they used for?

The best wrench to use when loosening a bleeder screw is a/an:

Technician A says that the most common use of a dial indicator is to measure the runout in a disc brake rotor. Technician B says that feeler gauges are used to measure disc brake rotor runout. Who is correct?

List types of precision measuring tools.

An electrical circuit using 12 volts and 5 amps of current would have a resistance of:

Brake cleaning is being discussed. Technician A says brake dust can be removed with a blowgun if the area has been wetted down first. Technician B says a negative-pressure enclosure can be used to safely contain brake dust in the workplace. Who is correct?

Explain what an outside micrometer or vernier caliper may be used for during brake repairs.

A __________ scale is a fine auxillary scale that indicates fractional parts of a larger scale.

Give an example of the type brake component measurement you would make using an outside micrometer.

Which of the following statements is true? A. Celsius temperature for the freezing point of water is 0 degrees. B. The boiling point of water measured on the Fahrenheit scale is 212 degrees.

To measure voltage in an electronic circuit, a technician should use a(n) :

Technician A says that a liter is slightly smaller in volume than a U.S. quart. Technician B says that 3.78 liters equal one U.S. gallon. Who is correct?

What are the most common tubing tools?