A lathe machine is primarily used for turning operations, where the workpiece rotates while a cutting tool shapes it. This process is used to create cylindrical and symmetrical parts. Drilling, cutting, and grinding are different processes.
What does a milling machine do?
A Shapes
B Turns
C Grinds
D Drills
A milling machine is used for shaping solid materials by removing excess material with rotating cutters. It is commonly used to create flat surfaces, grooves, and complex shapes on workpieces. It differs from turning, which is done on a lathe.
Which process uses high heat to change a material’s shape?
A Welding
B Casting
C Grinding
D Forging
Forging involves applying heat to metals, making them more malleable, and then shaping them using mechanical pressure. It is often used to make high-strength parts. Casting and welding are different processes, while grinding is used for surface finishing.
Which hand tool is essential for fastening?
A Screwdriver
B Hammer
C Wrench
D Pliers
A wrench is specifically used for tightening or loosening bolts and nuts, making it essential for fastening in the workshop. Other tools like pliers and screwdrivers are used for gripping and turning, while hammers are for impact.
What material is commonly used for welding electrodes?
A Graphite
B Steel
C Iron
D Copper
Steel electrodes are commonly used in welding because they match the materials being welded. The steel electrode melts during the welding process and creates a bond between the workpieces. Copper and graphite are not typically used for welding electrodes.
What is the primary function of a grinder?
A Smoothing
B Cutting
C Polishing
D Shaping
A grinder is primarily used for smoothing or polishing surfaces by using abrasives. It removes small amounts of material to improve the surface finish of a workpiece. It differs from cutting tools that remove larger material.
What is the purpose of tapping in workshop practice?
A Drilling holes
B Polishing
C Cutting threads
D Cutting holes
Tapping is the process of cutting internal threads in a hole. This is typically done with a tap tool, and it creates threads that can hold screws or bolts. Drilling is for making holes, not for threading.
What is the function of a CNC machine?
A Welding
B Shaping
C Drilling
D Automated control
CNC (Computer Numerical Control) machines use automated control via computers to operate machining tools. This allows for precise and repeatable operations like drilling, milling, and turning. It eliminates manual control, enhancing accuracy and efficiency.
Which material is typically used in casting?
A Metal
B Wood
C Plastic
D Glass
Casting typically involves pouring molten metal into a mold to create a desired shape. Common metals used for casting include iron, steel, and aluminum. Plastics and wood are used in other processes, but not in casting.
What is quenching in heat treatment?
A Shaping
B Hardening
C Cooling
D Heating
Quenching is the rapid cooling of a hot metal, typically by immersing it in water or oil. This process increases the hardness of the metal and is a key part of heat treatment. It differs from heating or shaping operations.
What is the purpose of a micrometer?
A Drilling holes
B Measuring diameter
C Welding
D Grinding surfaces
A micrometer is a precise measuring tool used to measure the outer diameter or thickness of an object with great accuracy. It is ideal for small dimensions and is not used for grinding, drilling, or welding.
What does a surface grinder do?
A Shapes
B Polishes
C Smoothes
D Cuts
A surface grinder is used to smooth and finish flat surfaces. It uses a rotating grinding wheel to remove material from the workpiece, enhancing surface texture. It is mainly used for precision finishing and differs from cutting and shaping tools.
What is a drill press used for?
A Measuring
B Cutting shapes
C Polishing
D Drilling holes
A drill press is a machine used to drill precise holes in materials like wood, metal, or plastic. It offers better control and accuracy compared to hand drills. It does not perform cutting, measuring, or polishing.
What type of welding is commonly used for thin materials?
A TIG
B MIG
C Stick
D Arc
TIG (Tungsten Inert Gas) welding is commonly used for welding thin materials because it provides a precise and clean weld with less heat input. MIG welding is often used for thicker materials, while arc and stick are less refined for thin materials.
What does a Vernier caliper measure?
A Temperature
B Length
C Hardness
D Weight
A Vernier caliper is used to measure the length, thickness, or depth of an object with high precision. It has a sliding scale that allows for accurate measurements. It is not used for measuring weight, temperature, or hardness.