What process is used to cut metal using a high speed abrasive wheel?
A Grinding
B Turning
C Drilling
D Milling
Grinding is a process where a rotating abrasive wheel is used to remove material from a workpiece. It is commonly used to finish or smooth metal surfaces, unlike drilling, milling, or turning, which have different cutting functions.
Which welding method is most suitable for thin metals?
A Arc
B MIG
C TIG
D Stick
TIG (Tungsten Inert Gas) welding is ideal for thin metals because it produces a precise, clean weld with minimal heat input. It is especially used for materials like aluminum and stainless steel. MIG and stick welding are used for thicker materials.
In which process is molten metal poured into a mold?
A Welding
B Casting
C Forging
D Grinding
Casting involves pouring molten metal into a mold to form a desired shape. This process allows the creation of complex geometries and is commonly used for manufacturing parts like engine blocks and gearboxes. Forging and welding use different methods.
What is the main purpose of a CNC lathe machine?
A Drilling
B Welding
C Grinding
D Turning
A CNC lathe is used for turning operations, where the workpiece is rotated while a cutting tool shapes it. It is used to create symmetrical, cylindrical parts. CNC (Computer Numerical Control) provides automation and precise control during the turning process.
What tool is primarily used to measure the external dimensions of a workpiece?
A Micrometer
B Depth gauge
C Caliper
D Vernier
A micrometer is specifically designed to measure external dimensions with high accuracy. It is typically used for measuring small dimensions, such as the thickness of a metal part. A caliper and Vernier are used for broader measurements.
What process is used to remove small chips of material to create precise shapes?
A Drilling
B Turning
C Milling
D Grinding
Milling involves using a rotating cutter to remove material from a workpiece, creating precise shapes or flat surfaces. It is widely used in machining processes to produce parts like gears and plates. Turning and drilling are different operations.
What is the purpose of heat treatment in workshop practice?
A Cooling
B Strengthening
C Shaping
D Joining
Heat treatment involves heating and cooling materials, particularly metals, to alter their properties and improve strength, hardness, and durability. It is used to strengthen materials for their intended applications. Shaping and joining are different processes.
What type of measurement tool is commonly used to measure depth?
A Depth gauge
B Ruler
C Vernier caliper
D Micrometer
A depth gauge is a precision tool used to measure the depth of holes, slots, or recesses in a workpiece. Unlike micrometers and calipers, which measure external dimensions, depth gauges are specifically designed for measuring depth.
What is the purpose of a jig in workshop practice?
A Weld parts
B Finish surfaces
C Cut material
D Hold workpiece
A jig is a tool used to hold and guide the workpiece during machining operations, ensuring accuracy and repeatability. It is used in processes like drilling and milling to ensure the part is correctly positioned.
Which of the following is the most common process for creating threads on a workpiece?
A Drilling
B Turning
C Tapping
D Milling
Tapping is the process of creating internal threads in a hole using a tool called a tap. It is essential for making screws fit into holes. Drilling is used for creating holes, while turning and milling have different functions.
Which tool is used to cut threads on a workpiece?
A Saw
B Hammer
C Tap
D Cutter
A tap is used for cutting internal threads in a hole. It is commonly used when creating screw holes. Other tools, like cutters and saws, serve different purposes, such as cutting or shaping, but not for threading.
What is the purpose of a surface finish?
A Measure precision
B Add weight
C Strengthen material
D Improve appearance
Surface finishing is used to improve the appearance and smoothness of a material’s surface. It involves processes like polishing, grinding, and buffing, which help to enhance the workpiece’s look and reduce imperfections. It does not add weight.
In which operation is a lathe used to remove material from a rotating workpiece?
A Turning
B Grinding
C Milling
D Drilling
Turning is the process where a workpiece rotates while a cutting tool removes material from it, typically to create cylindrical shapes. A lathe machine is specifically used for turning operations. Milling, drilling, and grinding serve different purposes.
What is the purpose of a die in a workshop?
A Weld parts
B Shape material
C Measure parts
D Drill holes
A die is a tool used in manufacturing to shape material by applying force. It is typically used for processes like stamping, forging, or molding. Dies are designed to shape material into specific forms, unlike drills or welds.
What is a common use of a drill press?
A Shaping
B Grinding
C Drilling holes
D Polishing
A drill press is a machine used for drilling precise holes in materials like wood, metal, and plastic. It offers more control and accuracy than handheld drills, which is critical in producing uniform holes in workpieces.