Mechanical Comprehension – Test 3 0% 62 Time Expired This subtest has 16 questions and a time limit of 20 minutes 1 / 16 What can used to change rotary motion into linear motion? worm drive miter bevel cams Cams can used to change rotary motion into linear motion. Cams can used to change rotary motion into linear motion. 2 / 16 A metric system of units means that values can be calculated by factors of: infinity one mass 10 A metric system of units means that values can be calculated by factors of 10. A metric system of units means that values can be calculated by factors of 10. 3 / 16 Work done on a rigid body due to the sum of the torques integrated over the angle through with the body rotates is known as: rotational work torque mass work axle rotation Work done on a rigid body due to the sum of the torques integrated over the angle through with the body rotates is known as rotational work. Work done on a rigid body due to the sum of the torques integrated over the angle through with the body rotates is known as rotational work. 4 / 16 When two external gears mesh, they always turn in what directions? same lower upward opposite When two external gears mesh, they always turn in the opposite directions. When two external gears mesh, they always turn in the opposite directions. 5 / 16 Pressure is the amount of force within a specific: fluid tube area container Pressure is the amount of force within a specific area. Pressure is the amount of force within a specific area. 6 / 16 In all machines, the actual mechanical advantage equals the resistance divided by the: load mass effort friction In all machines, the actual mechanical advantage equals the resistance divided by the effort. In all machines, the actual mechanical advantage equals the resistance divided by the effort. 7 / 16 Equilibrium is achieved when the forces on a system are: hyperactive balanced net net inverse Equilibrium is achieved when the forces on a system are balanced. Equilibrium is achieved when the forces on a system are balanced. 8 / 16 Third-class levers increase speed at the expense of: mass force friction speed Third-class levers increase speed at the expense of force. Third-class levers increase speed at the expense of force. 9 / 16 The Law of Conservation of Momentum states: total mass of a system remains the same total momentum of a closed system cannot change Momentum requires opposing forces momentum of an open system remains the same The Law of Conservation of Momentum states that the total momentum of a closed system cannot change. The Law of Conservation of Momentum states that the total momentum of a closed system cannot change. 10 / 16 In what type of system does mass remain constant and the net external force on the system is zero? elastic system frozen system balanced system closed sytem In a closed system, mass remains constant and the net external force on the system is zero. In a closed system, mass remains constant and the net external force on the system is zero. 11 / 16 What is the benefit of using ball bearings or roller bearings in a machine? rolling friction is less than sliding friction sliding friction is less than rolling friction greater mass equals more friction metal is smoother than oil The benefit of using ball bearings or roller bearings in a machine is that rolling friction is always less than sliding friction. The benefit of using ball bearings or roller bearings in a machine is that rolling friction is always less than sliding friction. 12 / 16 Pressure that is less than normal air pressure is called a: leak depression puncture vacuum Pressure that is less than normal air pressure is called a vacuum. Pressure that is less than normal air pressure is called a vacuum. 13 / 16 When two gears of unequal size (meaning an unequal number of teeth) are meshed together, the smaller of the two is usually called a: flywheel rack shaft pinion When two gears of unequal size are meshed together, the smaller of the two is usually called a pinion. When two gears of unequal size are meshed together, the smaller of the two is usually called a pinion. 14 / 16 When two gears of unequal size are meshed together, the smaller of the two is usually called a: rack shaft flywheel pinion When two gears of unequal size are meshed together, the smaller of the two is usually called a pinion. When two gears of unequal size are meshed together, the smaller of the two is usually called a pinion. 15 / 16 An inclined plane permits you to overcome a large: friction inertia resistance fulcrum An inclined plane permits you to overcome a large resistance. An inclined plane permits you to overcome a large resistance. 16 / 16 What law does the force developed in a spring obey? Newton's 16th law of motion Hooke's law Law of Least Resistance Hamilton's law The force developed in a spring obeys Hooke's Law. The force developed in a spring obeys Hooke's Law. Your score is 0% Exit