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AST Questions and Answers Rated A

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AST Questions and Answers Rated A A grinding sqealing noise when brakes are applied indicates ✔✔worn out brake lining On most vehicles, the pressure differential valve ✔✔Controls the brake-w ... arning lamp Technician A says theat the parking brake should be engaged while installing and adjustingdrum brake components. Technician B says that if the parking brake prevents a brake shoe from contacting the anchor, one should adjust the length of the parking brake cable ✔✔B only Tech A says traction control systems help keep the rear wheels from spinning during acceleration. Tech B says traction control systems use microcomputers to compare the drivers intended path with the vehicles actual path. who is correct ✔✔A only Energy of motion in a moving object is the definition of ✔✔kinetic energy Drum brakes are adjusted to compensate for ✔✔lining wear what brake bleeding method requires two technicians ✔✔manual bleeding Tech A says a disc brake caliper can have 2 pistons. Tech B says they can have one. whos correct? ✔✔Both are correct what is the backing plates job? ✔✔A mounting surface for other brake parts Tech A says the metering valve delays fluid pressure to the front disc brakes during hard brake application. Tech B says a proportioning valve restricts fluid to the front disc to prevent lockup ✔✔A only two most common types of brake fluid ✔✔DOT 3 and DOT5 Technician A says fluid will be visible on the face of the booster if fluid is leaking from its rear seal. True or False? ✔✔True During caliper reassembly all parts should be lubricated using? ✔✔Brake fluid Federal Motor Vehicle Safety standards require that automotive aprking brakes be capable of holding the vehicle stationary one a ______ degree grade ✔✔30 Two technicians are discussing visual inspection of drum brake systems. Tech A says that no action needs to be taken if the backing plate shoe contact locations are grooved. Tech B says that the adjuster lever should be rounded at the point where it contacts the star wheel. who is right? ✔✔Neither A or B A brake system should be bled whenever ✔✔the hydraulic system is exposed to the atmosphere Brake lines are made from... ✔✔Double walled steel tubing Tech A says a sticking caliper piston could cause brake drag. Tech B says rotors machined beyond the minimum thickness may casue brake pedal fade when the brakes are first applied. who is right? ✔✔A only [Show More]

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