BRAKES EXAM QUESTIONS

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BRAKES EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -49 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: Technician A says that the access hole for the starwheel adjuster may be in the brake drum. Technician B says that a frozen adjuster can cause a low brake pedal.Who is correct?

Answer:

both Question 2: The rubber used in most brake system components will swell if exposed to

Answer:

engine oil Question 3: Two technicians are discussing drum brake fade. Technician A says that mechanical fade occurs when the friction material overheats. Technician B says that water fade occurs when moisture is trapped between the shoes and drum, where it acts as a lubricant. Who is correct?

Answer:

both

Question 4: The first step when removing a brake drum is

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marking the drum either "right" or "left."

Question 5: The brake pedal assembly uses a mechanical lever to

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increase the driver's force on the brake pedal applied to the master cylinder.

Question 6: Which of the following statements is true of servicing disc brakes?

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Installing brake pads on the wrong side of the vehicle can prevent the wear sensor from working properly.Question 7: Two technicians are discussing the antilock braking system (ABS). Technician A says that factors affecting normal braking, such as coefficient of friction, also affect ABS operation. Technician B says that when braking on a slippery surface, you still must pump ABS brakes. Who is correct?

Answer:

tech a only Question 8: Technician A says that many traction control systems reduce engine torque to help the drive wheels achieve traction. Technician B says that hydraulic pressure from the electrohydraulic unit supplies brake fluid pressure to the spinning wheel brake during a traction control event. Who is correct?

Answer:

both Question 9: A starwheel adjuster is installed on the wrong side of the vehicle. Technician A says that the adjuster won't operate if it's installed on the wrong side. Technician B says that the adjuster will operate, but that it will cause the clearance to increase rather than decrease when activated. Who is correct?

Answer:

tech b

Question 10: Two technicians are discussing drum brake design and service. Technician A says that the labyrinth seal helps to keep water from getting into a drum brake. Technician B says that only synthetic brake grease, lithium brake grease or anti-seize compound should be used as a brake lubricant. Who is correct?

Answer:

both Question 11: Technician A says liquid in a confined space will compress. Technician B says liquid in a confined space will transfer pressure equally in all directions. Who is correct?

Answer:

tech b only Question 12: Vacuum brake boosters use a _______ to provide a sense of feel during braking.

Answer:

reaction disc

Question 13: The traction control system's yaw sensor is mounted

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under the driver seat Question 14: When observing wheel speed sensor output with an oscilloscope, most sensors should produce an AC sine wave that

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increases in frequency and amplitude as wheel speed increases.Question 15: Technician A says that, with some antilock braking systems, the diagnostic trouble code may be lost if the ignition is turned off before retrieving the code. Technician B says that some antilock braking systems require that a terminal be grounded to cause the amber ABS warning lamp to flash diagnostic trouble codes. Which technician is correct?

Answer:

Both Technician A and Technician B Question 16: When disassembling a brake drum, it's important to wet the linings, shoes, and other hardware with brake cleaner because

Answer:

it prevents asbestos from becoming airborne, where it can be inhaled.

Question 17: Two technicians are discussing disc brake service. Technician A says that some brake pads have tapered edges to prevent vibration. Technician B says that pad wear indicators are required by law on all new vehicles. Who is correct?

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tech a only Question 18: Which of the following is not an antilock braking system (ABS) operating mode?

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reluctance Question 19: Two technicians are discussing drum brake shoes. Technician A says that forward- and rear-facing shoes are the same and can be installed in any position. Technician B says that the darker color linings should always be placed toward the front of the vehicle. Which technician is correct?

Answer:

neither Question 20: Two technicians are discussing traction control. Technician A says that the computer locks both drive wheels together when one drive wheel starts to slip. Technician B says that first the brakes are applied, then the engine power is reduced. Who is correct?

Answer:

neither Question 21: The _______ is common to vehicles equipped with an antilock braking system

(ABS).

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hydraulic control unit Question 22: Technician A says to adjust the front-wheel bearings with the vehicle on the ground. Technician B says to adjust the front-wheel bearings by hoisting the vehicle safely.Who is correct?

Answer:

Tech b only