Aumt Brake Final Exam |Complete Questions with Graded A+ Answers

Aumt Brake Final Exam |Complete Questions with Graded A+ Answers Tech A says that parking brakes on drum brake vehicles use separate brake shoes for backup in an emergency. Tech B says that parking brakes on drum brake vehicles mechanically operate the standard drum brake shoes. Who iscorrect? Tech B Which of these drum brake systems uses servo action in both directions? Duo-servo drum brake systems Tech A says that brake shoe linings saturated with brake fluid from a leaky wheel cylinder can be cleaned with brake cleaner and reused as long as they aren't worn out. Tech B says that brake shoes should be replaced in axle sets. Who is correct? Tech B Tech A says that a metal-on-metal grinding noise in drum brakes generally requires replacing the brake shoes and resurfacing or replacing the drums. Tech B says that one way to help identify whether a problem is coming from the front or rear brakes is to test-drive the vehicle in a safe place at a relatively low speed and lightly apply the parking brake. Who is correct? both A and B Tech A says that most brake drums are designed to be machined if minor surface issues are present. Tech B says that brake drums can be reused if they are machined larger than specifications, as long as the surface is smooth. Who is correct? Tech A All of the following statements with respect to a wheel cylinder and piston are true EXCEPT: It is standard practice to hone out deep pits in the wheel cylinder bore. The component of the drum brake system attached to the backing plate is the: wheel cylinder Tech A says to use an air hose to clean the backing plate of dust and contamination. Tech B says to use a water-based cleaning solution to clean the backing plate of dust and contamination. Who is correct? Tech B Among the tools used to diagnose and repair drum brake systems, the wheel cylinder piston clamp is used to: hold the pistons in the wheel cylinder while the brake shoes are removed. Choose the correct statement: The backing plate has holes stamped in it. Tech A says that duo-servo brake shoes are only anchored on the top. Tech B says that duo-servo brakes typically use single-piston wheel cylinders. Who is correct? Tech A Tech A says that both secondary shoes should be installed on the passenger side of the vehicle. Tech B says that the lining on the primary shoe is typically shorter in length than the lining on the secondary shoe. Who is correct? Tech B When the driver releases the brake pedal, the brake shoes are withdrawn by the: return spring Which of the following brake tools is used to adjust brake shoes when the drum is installed? brake spoon Tech A says that when performing a brake job on the rear axle of an older vehicle, inspection finds brake fluid under the dust boot; the wheel cylinder should be replaced. Tech B says that when a drum brake return spring has failed, springs on both rear wheels need to be replaced. Who is correct? both A and B Tech A says that riveted lining is usually for heavy-duty or high-performance vehicles. Tech B says that bonded lining is glued to the metal brake shoe. Who is correct? Both A and B Choose the correct statement: Riveted linings are used on heavier duty or high-performance vehicles. All of the following statements with respect to brake systems are true EXCEPT: trailing shoes are self-energizing. Tech A says that a cleaned-up self-adjuster can be installed on either side of the vehicle. Tech B says that grease seals are meant to be reusable. Who is correct? Neither A nor B The component that prevents a direct path for water spray and dirt to enter the brake drum is the: Labyrinth seal. Tech A says that an antilock brake system (ABS) allows the front wheels to be steered during a panic stop. Tech B says that ABS sensors apply or release hydraulic pressure to the wheel brake units during ABS brake events. Who is correct? Tech A If we triple the speed of an object, the kinetic energy will: increase by nine times. All of the below statements are true EXCEPT: Service brakes consist of drum and/or disc brakes and are operated by hand. Tech A says that tire pressure does not affect braking. Tech B says that heavy vehicle loads increase stopping distance. Who is correct? Tech B Tech A says that the heavier the vehicle, the more stopping power is needed. Tech B says that the faster a vehicle is moving, the more braking power is needed. Who is correct? Both A and B Tech A says that water soaked brake shoes can be a cause of brake fade. Tech B says that disc brakes dissipate heat faster than drum brakes. Who is correct? Both A and B Tech A says that kinetic energy is created during braking to stop the vehicle. Tech B says that kinetic energy is converted to heat energy during braking. Who is correct? Tech B Tech A says that the brake pedal uses leverage to multiply foot pressure. Tech B says that when braking hard while moving forward, the vehicle's weight transfers to the rear wheels, increasing their traction. Who is correct? Tech A Which of these is a simple mechanical system that uses leverage to force a friction block against one or more wheels? Scrub brake Vehicles equipped with disc brakes incorporate a mechanically operated drum-style parking brake in the center of the rear disc brake rotors, commonly called a: top hat parking brake. Which of these is a simple mechanical system that uses leverage to force a friction block against one or more wheels? Scrub brake The cycle of energy transformation in a typical vehicle is: Chemical energy→Heat energy→Mechanical energy→Kinetic energy Tech A says that a disc brake operates by clamping friction materials to the outside of a disc. Tech B says that a drum brake operates by clamping friction materials to the outside of a drum. Who is correct? Tech A The kind of brake fade caused by the brake fluid becoming so hot that it boils is: hydraulic fade.