Tool signature consists of __________ elements.
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The lead screw of a lathe has _________ threads.
A. Single start
B. Double start
C. Multi-start
D. Any one of these
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A broach has
A. Roughing teeth
B. Semi-finishing teeth
C. Finishing teeth
D. All of these
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A taper tap has
A. Its end tapered for about three or four threads
B. Its end tapered for about eight or ten threads
C. Full threads for the whole of its length
D. None of the above
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In a plain milling machine, the table can be moved
A. Longitudinally
B. Crosswise
C. Vertically
D. All of these
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The type of tool used on milling machine and broaching machine is
A. Single point cutting tool
B. Two point cutting tool
C. Three point cutting tool
D. Multi-point cutting tool
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Cast iron during machining produces
A. Continuous chips
B. Discontinuous chips
C. Continuous chips with built-up edge
D. None of these
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The cutting fluid mostly used for machining steel is
A. Water
B. Soluble oil
C. Dry
D. Heavy oils
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The ductile materials, during machining, produce
A. Continuous chips
B. Discontinuous chips
C. Continuous chips with built up edge
D. Either (A) or (C)
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The tool life is said to be over if
A. Poor surface finish is obtained
B. There is sudden increase in cutting forces and power consumption
C. Overheating and fuming due to heat of friction starts
D. All of the above
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The point angle of a drill, for drilling stainless steel, is
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In American Standard Association (ASA) system, if the tool nomenclature is 8-6-5-5-10-15-2 mm, then the side rake angle will be
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Chip breakers are used to
A. Increase tool life
B. Remove chips from bed
C. Break the chips into short segments
D. To minimize heat generation
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Negative rakes are used for
A. Carbide tools
B. Heavy loads
C. Harder materials
D. All of these
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Which of the following operations is carried out at a minimum cutting velocity if the machines are equally rigid and the tool work materials are the same?
A. Turning
B. Grinding
C. Boring
D. Milling
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Internal or external threads of different pitches can be produced by
A. Pantograph milling machine
B. Profiling machine
C. Planetary milling machine
D. Piano miller
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A 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, is
A. Carburizing flame
B. Oxidizing flame
C. Oxy-acetylene flame
D. Neutral flame
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The lathe spindles are usually made hollow and provided with
A. Internal taper
B. External taper
C. Internal and external taper
D. No taper
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A shaft has a dimension, φ9 +0.025⁺⁰∙⁰⁰⁹, the respective values of fundamental deviation and tolerance are
A. −0.025, ±0.008
B. −0.025, 0.016
C. −0.009, ± 0.008
D. −0.009, 0.016
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In transverse grinding
A. The work is reciprocated as the wheel feeds to produce cylinders longer than the width of wheel face
B. The work rotates in a fixed position as the wheel feeds to produce cylinders equal to or shorter than the width of wheel face
C. The work is reciprocated as the wheel feeds to produce cylinders shorter than the width of wheel face
D. The work rotates in a fixed position as the wheel feeds to produce cylinders longer than the width of wheel face
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