Fitter Semester 1 Module 2 Quiz

Measuring and Marking Tools

• The accuracy of a try square is ± 0.05 mm per 100 mm.
• The part marked as X in a combination set is the stock.
• A center punch is used for making witness marks.

Micrometers and Calipers

• The reading of an outside micrometer (British) is in inches.
• The part marked as X in a depth micrometer is the spindle.

Taps and Threading

• Hand taps are chamfered at the lead to facilitate easy entry into the hole.

Filing and Drilling

• A hermaphrodite caliper is used to mark the center of a round bar.
• The defect that causes metal chips to clog between the teeth of a file is known as pinching.
• The tool marked as X is a needle file.
• The English term for 'जेनी कैलिपर' is a hermaphrodite caliper.
• The Hindi term 'फमश जョइंट कैलिपर' refers to a universal joint caliper.

Vices

• A bench vice is used for holding small work that requires filing or drilling.
• A tool maker's vice is used for preventing thermal expansion by removing chips from the holes.
• A tool maker's vice is used to maintain accuracy during work.

Cutting Tools

• A hacksaw blade with a curved teeth is used for cutting along curved lines.
• A bent snips is used for cutting curved lines or irregular shapes.
• A rivet set is used for shaping and forming rivets.

Shears and Punches

• The part of a lever shear marked as X is the blade.
• The part marked as X is used for cutting metal sheets or plates.

Drilling

• For an HSS drill diameter of 24 mm and cutting speed of 30 m/min, the spindle speed is 95 rpm to drill mild steel.