Automotive & Shop Practice Quiz – Part 2
21. What is the function of an alternator?
Correct Answer: B) Convert mechanical energy to electrical power
The alternator generates electricity from engine motion to run systems and charge the battery.
22. What is the purpose of the muffler?
Correct Answer: A) Reduce engine noise
The muffler quiets exhaust pulses so the vehicle runs with less noise.
23. What is the function of a torque converter?
Correct Answer: A) Transfer torque from engine to transmission
In automatic cars, the torque converter transfers and multiplies engine torque to the transmission.
24. Which material is commonly used for brake pads?
Correct Answer: C) Composite materials
Modern brake pads use composites to balance braking performance, heat resistance, and durability.
25. What tool is used to measure engine compression?
Correct Answer: A) Compression gauge
A compression gauge measures cylinder pressure to check engine health and sealing.
26. What is the function of a spark plug?
Correct Answer: A) Provide electrical spark to ignite fuel-air mixture
The spark plug creates the spark that lights the fuel and air inside the cylinder.
27. What does a voltmeter measure?
Correct Answer: C) Voltage
A voltmeter measures the electrical potential difference between two points in volts.
28. Which type of metal is commonly used in automotive body panels?
Correct Answer: A) Aluminum
Aluminum is lightweight and corrosion resistant, so it is widely used in car body panels.
29. What does a carburetor do?
Correct Answer: A) Mix air and fuel for combustion
In older cars, the carburetor meters fuel into incoming air to form the combustion mixture.
30. What tool is used to cut internal threads?
Correct Answer: B) Tap
A tap cuts threads inside holes so bolts or screws can be screwed in.
31. What tool is used to cut external threads?
Correct Answer: A) Die
A die cuts male threads on rods or bolts so they match internal threads.
32. What type of welding uses a shielded metal arc?
Correct Answer: C) Stick welding
Stick welding uses a consumable electrode and a shielding flux to protect the weld pool.
33. What is the purpose of a safety switch on power tools?
Correct Answer: B) Prevent accidental startup
A safety switch helps avoid unintentional operation that could cause injury.
34. What kind of saw is best for cutting metal?
Correct Answer: C) Hacksaw
A hacksaw has a fine-toothed blade designed to cut metal cleanly.
35. What is the use of a micrometer?
Correct Answer: B) Measure small distances precisely
Micrometers give highly accurate measurements for parts and machining work.
36. What tool do you use to remove nails?
Correct Answer: A) Crowbar
A crowbar provides leverage to pry and pull nails from wood or surfaces.
37. What type of lubricant is typically used in automotive engines?
Correct Answer: B) Motor oil
Motor oil lubricates moving engine parts and helps control heat and wear.
38. What is the primary purpose of a fuse in an electrical system?
Correct Answer: B) Protect wiring from overload
A fuse blows when current is too high to prevent wiring damage or fire.
39. What machine is used to shape metal by cutting or grinding?
Correct Answer: C) Grinder
A grinder removes material for shaping, smoothing, or sharpening metal parts.
40. What is a torque wrench calibrated to measure?
Correct Answer: C) Torque
Torque wrenches are set to read and apply a specific twisting force in consistent units.
41. What is the main role of the alternator belt?
Correct Answer: A) Drive electrical accessories
The alternator belt powers accessories like the alternator, power steering pump, and AC compressor.
42. Which type of wood joint uses interlocking fingers?
Correct Answer: B) Dovetail
Dovetail joints lock together with tapered, interlocking shapes that resist pulling apart.
43. What tool is used to drive screws?
Correct Answer: B) Screwdriver
Screwdrivers turn screw heads to secure or remove screws.
44. What is the name of a tool used to measure angles?
Correct Answer: B) Protractor
A protractor measures angles in degrees for layout and cutting.
45. What is a lathe used for in a shop?
Correct Answer: B) Turning cylindrical objects
A lathe spins workpieces while cutting tools shape round parts like shafts and bushings.
46. What is the primary safety concern when working with power tools?
Correct Answer: B) Personal protective equipment
Wearing eye protection, gloves, hearing protection, and other PPE reduces injury risk.
47. What is the primary purpose of a hydraulic system in vehicles?
Correct Answer: B) Provide fluid power to move components
Hydraulics use fluid pressure to operate brakes, steering, and other heavy-duty systems.
48. What is a common use for a hacksaw?
Correct Answer: B) Cutting metal pipes
Hacksaws are commonly used to cut metal pipes and small metal stock.
49. Which type of wrench provides a fixed grip around a nut or bolt?
Correct Answer: B) Box-end wrench
Box-end wrenches encircle the fastener for a strong, secure grip without slipping.
50. What is an advantage of using pneumatic tools in a shop?
Correct Answer: B) Provide more power and speed
Pneumatic tools, powered by compressed air, often deliver higher power and faster operation for heavy work.
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