Manufacturing And Production Technology MCQ Questions & Answers | Mechanical Engineering

The point angle is located at the head of the twist drill. For hard materials such as stainless steel, the point angle should be large and e.g. 130° or 135°. For soft materials, point angles of e.g. 118° are used. With a large point angle, more of the cutting edge engages in the workpiece when drilling

According To ASA System the tool nomenclature is to be followed by this procedure : Back rake angle, Side rake angle, Front or end clearance or relief angle, Side clearance angle or relief angle, End cutting edge angle, Side cutting edge angle, Nose radius. From the System Side rake angle is 6°

The function of a chip breaker is to improve chip control and to reduce cutting resistance. A better balance between the two will increase the machining performance. Reduced cutting resistance can avoid chipping and fracturing of the cutting edge caused by vibration

Negative rake angles are more commonly used for carbide tipped tools. Negative rake angles can be considered for intermittent cuts and heavy stock removal. And also when machining hard and brittle materials, such as titanium or stainless steel.

milling is carried out at a minimum cutting velocity if the machines are equally rigid and the tool work materials are the same.

Planetary Mills are ideally suited for fine grinding of hard, medium-hard, soft, brittle, tough and moist materials. Internal or external threads of different pitches can be produced by Planetary milling machine

Neutral flame is type of welding flows, which is the result of a perfect proportion and mixture of acetylene and oxygen and is used for fusion welding of steel and cast iron. The neutral flame is the flame in which the amount of oxygen is precisely enough for burning, and neither oxidation nor reduction occurs. A flame with a good balance of oxygen is clear blue. The reducing and neutral flames are useful in soldering and annealing. Neutral flame has a 1:1 ratio of acetylene and oxygen. It's the most preferred flame for welding.

The lathe spindles are usually made hollow and provided with Internal taper:
- Lathe spindles are used for machine-cutting of workpieces
- It can also be referred to as workpiece spindles
- As the workpiece is clamped via the chuck of the lathe spindle

Transverse Cylindrical Grinding. Considering plunge grinding, in which the wheel and the workpiece motions act on the same plane. -transverse grinding involves the addition of crossfeed (transverse motion) of the workpiece relative to the grinding wheel in a direction perpendicular to the plane of wheel rotation.