What is the purpose of a lathe machine in workshop practice?
A Grinding material
B Shaping cylindrical parts
C Drilling holes
D Welding parts
A lathe machine is primarily used for shaping cylindrical parts by rotating the workpiece while a cutting tool is applied to it. It is ideal for producing symmetrical and accurate parts such as shafts, rods, and bushings.
Which of the following is used to drill precise holes in a workpiece?
A Lathe machine
B Milling machine
C Surface grinder
D Drill press
A drill press is used for drilling precise holes in materials. It allows for controlled depth and alignment, making it suitable for repetitive drilling tasks, ensuring high accuracy in part manufacturing.
What is the primary function of a cutting tool?
A To remove material
B To shape the workpiece
C To measure dimensions
D To hold parts
Cutting tools are designed to remove material from a workpiece to achieve the desired shape, surface finish, and dimensions. They are critical in processes such as turning, milling, drilling, and grinding.
What is the key benefit of heat treatment in metalworking?
A To join metals
B To reduce material costs
C To increase strength and hardness
D To smooth surfaces
Heat treatment processes like quenching, tempering, and annealing are used to alter the physical properties of metals, enhancing their strength, hardness, and wear resistance, making them more suitable for specific applications.
What is the purpose of forging in workshop practice?
A To cut metal
B To shape metal using pressure
C To join parts
D To measure parts
Forging is a process where metal is heated and shaped by applying pressure. This technique improves the strength of the material by aligning its internal grain structure, making it suitable for parts subjected to high stress.
Which tool is used to measure internal dimensions of a hole?
A Vernier caliper
B Inside caliper
C Micrometer
D Depth gauge
Inside calipers are designed to measure internal dimensions such as the diameter of a hole. They are used alongside other measuring tools like micrometers or Vernier calipers to ensure precise measurements for assembly and fitting.
What type of grinder is used for precision surface finishing?
A Surface grinder
B Bench grinder
C Angle grinder
D Die grinder
A surface grinder is used for finishing and smoothing flat surfaces. It uses an abrasive wheel to remove small amounts of material, ensuring high precision and an even, smooth finish on the workpiece.
What is the role of CNC in modern machining?
A Manual operation
B Reducing tool wear
C Automation and precision control
D Increasing labor
CNC (Computer Numerical Control) machines automate machining processes like milling, turning, and drilling, offering high precision, repeatability, and efficiency. It eliminates the need for manual operation and ensures parts are produced to exact specifications.
What is the purpose of using a file in workshop practice?
A Shaping materials
B Polishing surfaces
C Cutting materials
D Measuring dimensions
A file is used for smoothing, polishing, and refining the surface of materials, typically metals or plastics. It helps remove small amounts of material to improve surface finish or to shape parts precisely after machining.
What is the main function of a fixture in machining?
A To cut material
B To measure dimensions
C To polish surfaces
D To hold the workpiece in place
A fixture is used to securely hold the workpiece in a fixed position during machining. It ensures accurate alignment, improving repeatability and precision in operations like milling, drilling, and turning.
What type of tool is used for creating threads?
A Drill bit
B Saw blade
C Tap
D Reamer
A tap is used for creating internal threads in a workpiece. It cuts threads into pre drilled holes, enabling the insertion of bolts and screws. Tapping is an essential process in machining for creating threaded connections.
What is the main purpose of sheet metal work?
A Shaping and forming metal
B Cutting metal
C Polishing metal
D Joining metal parts
Sheet metal work involves shaping, cutting, and bending thin metal sheets to form parts. It is used in industries like automotive and construction to create components such as panels, brackets, and enclosures.
What is the function of a lathe chuck?
A Rotate the workpiece
B Hold the tool
C Hold the workpiece
D Measure dimensions
A lathe chuck is used to hold the workpiece in place during turning operations. It grips the part securely, allowing it to rotate while the cutting tool shapes it. This ensures accuracy and prevents movement during machining.
What is the main goal of process optimization?
A To reduce material costs
B To increase production speed
C To improve production efficiency
D To decrease machine downtime
Process optimization focuses on improving the efficiency of production by reducing waste, optimizing workflows, and minimizing delays. It helps companies achieve better performance, higher output, and lower costs in manufacturing operations.
What is a common material used for cutting tools?
A Steel
B Aluminum
C Copper
D Brass
Steel is commonly used for cutting tools because of its durability, strength, and ability to withstand high temperatures. Hardened steel tools, such as drill bits and lathe tools, maintain sharpness and effectiveness during machining.