1. Technician A says the proportioning valve controls pressure to the rear brakes to prevent wheel lockup. Technician B says the front-brake metering valve delays brake pressure to the front calipers during a hard brake application. Who is correct?
A. Both Technicians A and B
B. Neither Technician A nor B
C. Technician A only
D. Technician B only
3. Which of these conditions can cause brake pedal fade?
A. Leakage past the master cylinder cups
B. Brake drum used beyond its limit
C. Air in the hydraulic system
D. Seized brake caliper piston
4. Two technicians are discussing master cylinders. Technician A says it's normal to see fluid movement in the reservoir when the brake pedal is depressed. Technician B says a defective master cylinder can cause the brake pedal to slowly sink to the floor when depressed. Which technician is correct?
A. Technician B only
B. Both Technician A and Technician B
C. Technician A only
D. Neither Technician A nor Technician B
5. The rubber used in most brake system components will swell if exposed to
A. water.
B. engine oil.
C. DOT 3 brake fluid.
D. air moisture.
6. Which of the following types of brake fluid would not be recommended for use in Denver, Colorado and its high altitudes?
A. DOT 5
B. DOT 4
C. DOT 3
D. DOT 5.1
7. Technician A says that performing brake repairs requires special licensing in some states. Technician B says that federal-level licensing may be required. Who is correct?
A. Technician A only
B. Technician B only
C. Neither Technician A nor B
D. Both Technicians A and B
8. Two technicians are describing automotive wheel bearings on RWD cars. Technician A says that conventional tapered roller bearings used on the front of most rear-wheel-drive vehicles should be slightly loose when adjusted properly. Technician B says that the spindle nut shouldn't be tightened more than finger-tight on the final step. Who is correct?
A. Technician B only
B. Neither Technician A nor B
C. Both Technicians A and B
D. Technician A only
9. Technician A says a pull to the right during braking could be caused by a defective metering valve. Technician B says a pull to the left during braking could be caused by a defective proportioning valve. Which technician is correct?
A. Neither Technician A nor Technician B
B. Technician A only
C. Both Technician A and Technician B
D. Technician B only
10. Air in the lines will cause which of the following problems?
A. Hard, stiff brake pedal
B. Brake noise
C. Low, spongy brake pedal
D. Vibration in the brake pedal during stops
11. Technician A says that brake fluid standards are determined by the Society of Automotive Engineers (SAE). Technician B says that brake fluid standards are determined by the Department of Transportation (DOT). Who is correct?
A. Technician B only
B. Neither Technician A nor B
C. Technician A only
D. Both Technicians A and B
12. What is the color of the warning light that indicates hydraulic system failure?
A. Green
B. Amber
C. Blue
D. Red
13. Technician A says that the red brake warning lamp on the dash will light if a hydraulic failure or low brake fluid level is detected. Technician B says that the red brake warning lamp on the dash will light if a fault in the ABS is detected. Who is correct?
A. Technician B only
B. Technician A only
C. Neither Technician A nor B
D. Both Technicians A and B
14. The primary brake circuit fails due to a leak in the lines, leaving the rear section of a dual split master cylinder. Technician A says that the driver will notice a lower than normal brake pedal and reduced braking power. Technician B says that the brake pedal will "grab" higher than normal. Which technician is correct?
A. Technician A only
B. Neither Technician A nor Technician B
C. Both Technician A and Technician B
D. Technician B only
15. A customer states that the vehicle skids when the brakes are applied in a panic situation. The technician discovers that the rear brake pressure is increasing too rapidly. The most likely cause of this fault is a
A. clogged compensation port in the master cylinder.
B. clogged take-up valve in the master cylinder.
C. faulty metering valve.
D. faulty proportioning valve.
17. A 3,000 lb. vehicle is calculated to have a kinetic energy of 90,000 ft-lb at 30 mph. If the vehicle is loaded with 3,000 lb. of cargo, what will the kinetic energy be at the same speed?
A. 360,000 ft-lb
B. 180,000 ft-lb
C. 900,000 ft-lb
D. 90,000 ft-lb
18. Under what circumstances can water cause brake fade?
A. In very humid or foggy weather
B. Whenever it rains and the roads are wet
C. When ice forms in the brakes
D. When driving through puddles or during heavy rain
19. The backing plate is a component of the _______ brake assembly.
A. disc
B. drum
C. parking
D. emergency
20. Technician A says that all vehicles equipped with ABS will experience a pulsating brake pedal even during normal braking. Technician B says that ABS will result in quicker stops on all road surfaces. Which technician is correct?
A. Both Technician A and Technician B
B. Neither Technician A nor Technician B
C. Technician A only
D. Technician B only
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