Auto and Shop Knowledge Practice Question Answers
1. The correct answer is "d," the suspension system. Don't be misled by the possibility of choosing the steering system. While steering does affect directional stability, the main auto system which determines ride comfort, stiffness, softness, and ability to stay on track when cornering is the suspension system.
2. The correct answer is "c." The transfer case shifts power from rear wheels to front wheels in a four-wheeled drive vehicle. The mechanism is positioned between the front and rear drive axles.
3. The correct answer is "a." Threading refers to the grooves around the inside of the nut and on the outside of the bolt. There are two basic thread classifications. Coarse threads have a smaller number of "turns" or grooves and fine threads have a greater number. Coarse threaded bolts require coarse threaded nuts. Fine threaded bolts require fine threaded nuts in order to be compatible. Metal alloys have nothing to do with thread specifications. Answer choice "d" defies common sense, as does choice "b."
4. The correct answer is "c." The term is commonly used in wood working plans and schematics.
5. The best choice answer is "b." While many oil producers make a multiple viscosity motor oil that can be used in both cold and warm climates, you can rule out choice "a" because a higher viscosity or "thick" motor oil tends to become even thicker in cold weather and would make the vehicle even harder to start. Choice "d" is misleading because the motor oil you use would be the same for four or two wheel drive vehicles. Choice "c" is misleading because the Eastern United States has several types of climate.
6. The best answer is "b," the rotor and distributor assembly system. For the engine to run smoothly, the cylinders must fire in a particular order. The rotor and distributor accomplish this by sending the "spark" to the cylinders at closely timed intervals. Should the rotor and distributor assembly fail to do this correctly, the engine combustion would be very rough and cause backfiring and other problems.
7. The correct answer is "b." A punch can be used for putting marks on metal objects so that they can be more easily drilled. A nail punch is often used to drive small trim nails deeply into the wood so that the nails cannot be seen.
8. The word "pipe" in "pipe wrench" should eliminate "d" if common sense doesn't. Adjustable wrenches are sometimes hard to fit onto stubborn nuts and often slip so that's not a good choice. The same applies to open-end wrenches. On the other hand, a box-end wrench entirely surrounds the nut and fits snugly. So long as you've got the right size box-end wrench, it's unlikely to slip. Therefore, "c" is the best answer.