What is the purpose of grinding in workshop practice?
A Shaping material
B Cutting material
C Welding parts
D Smoothing surfaces
Grinding is primarily used for smoothing or finishing a workpiece surface. It uses an abrasive wheel to remove small amounts of material to improve surface quality. It differs from cutting or shaping processes, which focus on material removal.
What is the primary function of a forging process?
A Drilling holes
B Cutting shapes
C Shaping material
D Joining parts
Forging involves shaping material, usually metal, by applying heat and mechanical force. The process is used to create strong and durable parts, such as gears or shafts. Unlike drilling, it does not involve creating holes.
What is the typical use of a drill press?
A Grinding
B Drilling holes
C Cutting
D Polishing
A drill press is used for drilling holes in various materials with high precision. It offers better control than handheld drills, especially for repetitive operations, ensuring consistent hole depth and alignment. It does not perform cutting or grinding.
What does CNC stand for in machining?
A Computer Numerical Control
B Cutting Numerical Control
C Control Numerical Calibration
D Centralized Numerical Control
CNC stands for Computer Numerical Control, which refers to machines controlled by a computer to automate operations like milling, turning, and drilling. It improves accuracy, efficiency, and repeatability compared to manual methods.
What tool is primarily used to remove metal from a workpiece?
A Grinder
B Lathe
C Hammer
D Saw
A grinder uses a rotating abrasive wheel to remove material from a workpiece, improving surface finish and shaping. Unlike a lathe or hammer, which are used for turning and impact work, a grinder is focused on smoothing and finishing.
What is the primary purpose of heat treatment in workshop practice?
A Strengthen material
B Cut materials
C Join parts
D Shape material
Heat treatment is used to alter the properties of metals by heating them to high temperatures and then cooling them in various ways. The purpose is to enhance properties like hardness and strength, crucial for parts subjected to stress.
Which tool is most commonly used for cutting threads?
A Wrench
B Saw
C Tap
D Drill
A tap is used for cutting internal threads inside a hole. It is essential for creating threads in which bolts or screws can fit. Sawing, drilling, and using a wrench are not designed for threading.
What is a common use for a lathe machine?
A Welding
B Turning
C Drilling
D Grinding
A lathe machine is primarily used for turning operations, where the workpiece is rotated while a cutting tool shapes it. This is ideal for creating cylindrical parts. Other processes like grinding and welding serve different purposes.
Which welding process uses a consumable electrode and shielding gas?
A MIG welding
B Arc welding
C TIG welding
D Stick welding
MIG (Metal Inert Gas) welding uses a consumable electrode and shielding gas to create a weld. It is ideal for welding metals like steel and aluminum and is commonly used for thin sheet metals. TIG and stick welding use different techniques.
Which measurement tool is used to measure the outside diameter of a part?
A Caliper
B Depth gauge
C Micrometer
D Vernier
A micrometer is used to measure the external dimensions, such as the diameter of a workpiece, with high accuracy. It is ideal for measuring small dimensions. Calipers and Verniers are used for broader measurements but lack the precision of a micrometer.
What is the purpose of casting in manufacturing?
A Removing material
B Joining parts
C Making molds
D Shaping material
Casting is the process of shaping material, typically metal, by pouring molten material into a mold. This process is essential for creating complex shapes that are difficult to achieve through other methods like machining or forging.
What does the term “milling” refer to in workshop practice?
A Cutting with a laser
B Drilling
C Shaping with a rotating cutter
D Polishing
Milling refers to the process of using a rotating cutter to remove material from a workpiece. It is typically used for shaping and creating flat surfaces or intricate designs. Drilling and laser cutting are separate operations.
What type of grinder is used for precision finishing of surfaces?
A Angle grinder
B Bench grinder
C Pedestal grinder
D Surface grinder
A surface grinder is used to provide precision finishing of flat surfaces. It uses a rotating abrasive wheel to remove material and improve the surface finish. Bench and pedestal grinders serve different purposes, like general grinding.
What is the function of a milling machine?
A Shaping
B Grinding
C Welding
D Cutting
A milling machine is used for shaping material by removing material with a rotating cutter. It is ideal for creating flat surfaces, grooves, or other complex shapes. Unlike cutting or welding, milling specifically focuses on shaping and material removal.
Which tool is typically used for surface finishing?
A Drill
B File
C Hammer
D Saw
A file is used for surface finishing to smooth rough edges or surfaces. It helps refine the shape of a workpiece after machining. Unlike drills or saws, which are used for cutting, a file is specifically for refining surfaces.