Automotive Electrical Quiz Questions And Answers

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Matt Balanda, a Calvary Chapel Christian School leader with a Bachelor's in Aerospace Engineering and Mathematics, transitioned from Aerospace Engineering to Education with a Master's from California Baptist University. As the High School Vice-Principal and Physics teacher, he nurtures students' love of learning and faith, creating an enriching and transformational educational experience.
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1. If AC is Alternating Current, then DC is

Explanation

The correct answer is Direct Current because it is the opposite of Alternating Current (AC). Direct Current is the flow of electric charge in one direction only, while Alternating Current changes direction periodically. Therefore, DC is the appropriate term to describe the type of current that flows continuously in a single direction.

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About This Quiz
Automotive Electrical Quiz Questions And Answers - Quiz

Are you interested in an automotive electrical quiz? Have you got a passion for cars and a distinct knowledge of the ins and outs of these automobiles and... see morethe specific conditions required to keep them running smoothly every day? Take the following quiz, and you might find yourself with the knowledge to someday become an auto electrician! What is the process being undertaken, from putting your key into the ignition to taking off on the open road? Let’s see if you can tell us!
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2. A 48V forklift battery has individual 2V cells. There are how many cells?

Explanation

Since each individual cell has a voltage of 2V, to achieve a total voltage of 48V for the forklift battery, there must be 24 cells. This is because 2V multiplied by 24 cells equals 48V.

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3. What type of screwdriver is this?

Explanation

The correct answer is Phillips (Cross) head. This type of screwdriver is characterized by a cross-shaped head with a single slot in each arm of the cross. It is designed to be used with Phillips head screws, which have a corresponding cross-shaped recess. The Phillips head screwdriver is commonly used in many applications, particularly in woodworking and construction, as it provides better torque transfer and reduces the risk of cam-out compared to flathead screwdrivers.

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4. This spanner is known as a _________ spanner

Explanation

A combination spanner is a type of spanner that has open-end jaws on one end and a ring or socket on the other end. It is called a combination spanner because it combines the features of both an open-end spanner and a ring spanner. This allows it to be used for different types of nuts and bolts, making it a versatile tool.

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5. You are broken down at night with a flat rear tire. In the frustration of fitting the spare, you kick all 4 wheel nuts into the scrub on the side of the road and lose them. What is the easiest way to get going quickly?

Explanation

The easiest way to get going quickly in this situation is to take 1 wheel nut off the other 3 wheels. By doing this, all the wheels will still have 3 wheel nuts, which is the minimum requirement for safe driving. This solution allows the person to continue their journey without having to wait for new wheel nuts or a tow truck.

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6. You have to remove a bolt with a 1/5" head, but you only have metric sockets. If we believe 1" is equal to 25.4mm, tell us the size socket which will most effectively remove the bolt?

Explanation

None of these options will effectively remove the bolt. Since the bolt has a 1/5" head, we need a socket size that is slightly larger than 1/5" in order to fit properly. Converting 1/5" to metric, we get approximately 5.08mm. Therefore, the closest socket size that will most effectively remove the bolt is 5.5mm, which is not listed as an option.

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7. What's larger is the diameter? (in inches)

Explanation

Among the given options, the largest diameter, measured in inches, is 3/2 inches (3/2"). This means that the size of the circular object with a 3/2-inch diameter is bigger compared to the objects with the other specified diameters, which are 3/8", 3/16", and 3/4". In this context, "diameter" refers to the measurement across the center of a circle or circular object, representing its width.

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8. You have to remove a bolt with a 1/2" head, but you only have metric sockets. If we believe 1" is equal to 25.4mm, tell us the size socket which will most effectively remove the bolt?

Explanation

The bolt has a 1/2" head, which is equivalent to 12.7mm. Since the closest metric socket size to 12.7mm is 13mm, the 13mm socket will most effectively remove the bolt.

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9. There are 2 x 100W driving lights attached to a vehicle. If they draw somewhat 8.3A, when switched on, tell us what voltage the vehicle is. Ohm's Law: Voltage = Load / Current

Explanation

The correct answer is 24V. According to Ohm's Law, voltage is equal to the load divided by the current. In this case, the load is 200W (2 x 100W) and the current is 8.3A. By substituting these values into the formula, we can calculate the voltage. Therefore, 200W / 8.3A = 24V.

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10. When a 12V lead acid battery is discharged, what is the end state of the electrolyte (liquid)?

Explanation

When a 12V lead acid battery is discharged, the end state of the electrolyte (liquid) is water (H20). During the discharge process, the chemical reaction within the battery converts the sulfuric acid (H2SO4) in the electrolyte into water (H20) and lead sulfate (PbSO4). This is a reversible reaction, and when the battery is charged again, the lead sulfate is converted back into sulfuric acid, replenishing the electrolyte. Therefore, at the end of the discharge process, the electrolyte consists mainly of water.

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Matt Balanda |BS (Aerospace Engineering) |
Science Teacher
Matt Balanda, a Calvary Chapel Christian School leader with a Bachelor's in Aerospace Engineering and Mathematics, transitioned from Aerospace Engineering to Education with a Master's from California Baptist University. As the High School Vice-Principal and Physics teacher, he nurtures students' love of learning and faith, creating an enriching and transformational educational experience.

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If AC is Alternating Current, then DC is
A 48V forklift battery has individual 2V cells. There are how many...
What type of screwdriver is this?
This spanner is known as a _________ spanner
You are broken down at night with a flat rear tire. In the frustration...
You have to remove a bolt with a 1/5" head, but you only have...
What's larger is the diameter? (in inches)
You have to remove a bolt with a 1/2" head, but you only have metric...
There are 2 x 100W driving lights attached to a vehicle. If they draw...
When a 12V lead acid battery is discharged, what is the end state of...
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