2-61. Personnel  inexperienced  in  tire repair  should  only  repair  tires under  direct  supervision  of  an experienced  person. 1. True 2. False 2. Learning  Objective: Recognize the  principles  and  components of brake systems. 2-62. A brake system must not only stop a unit of CESE but also must stop it in a smooth, uniform motion. 1. True 2. False 2-63. Which of the following items of a brake system is the operator’s responsibility  to  check  during prestart   operations? 1. Brake fluid level 2. Loose  connections  or  parts 3. Leaks 4. Each of the above 2-64. Which of the following types of brakes  are  classified  as  individual brakes? 1. External   contracting 2. Internal  expanding 3. Disc 4. All of the above 2-65. Which of the following types of brakes  cannot  withstand  the  high pressure  required  to  produce  the friction needed to stop a heavily loaded  vehicle? 1. Disc 2. Drum 3. External   contracting 4. Internal  expanding 2-66. For what system are internal expanding  type  of  brakes exclusively  used? 1. Vehicle  trailer  brakes Vehicle  wheel  brakes 3. Brakes  for  controlling  speeds of  auxiliary  drive  shafts 4. Winch  brakes 2-67. When the breaking action is no longer required of an internal expanding  brake  system,  the  brake shoes are returned to their original  position  by  what  power source? 1. Vacuum  pull 2. Brake  fluid  pressure 3. Force  of  retracting  springs 4. Force of gravity 2-68. Which type of braking system has a pair of flat pads instead of curved brake  shoes? 1. Disc 2. Mechanical 3. Air 4. Electrical 2-69. A  mechanical  parking  brake  may be  either  linked  mechanically  to the rear wheel brakes or external contracting  brake  bands  located on the drive shaft. 1. True 2. False 2-70. In  a  hydraulic  brake  system,  what component  controls  the  movement  of the brake shoes at each wheel? 1. The wheel cam 2. The  wheel  cylinder 3. The  wheel  crank 4. The  wheel  gear 2-71. On a vehicle brake system, where are  the  larger  wheel  cylinders mounted? 1. The rear wheels 2. The  front  wheels 3. The front and rear left wheels 4. The front and rear right wheels 15