Mechanical Engineering :: Production Engineering
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In which of the following machine, the work remains stationary and the tool is rotated?
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The ratio between two consecutive spindle speeds for a six-speed drilling machine using drills of diameter 6.25 to 25 mm size and at a cutting velocity of 18 m/min is
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The cutting speed of a drill depends upon the
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The chamfering is an essential operation after
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The broaching operation in which either the work or the tool moves across the other, is known as
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Ultra-sonic machining is best suited for
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In plunge grinding
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When the grinding wheel is marked by the letters from I to P, it indicates that the grinding wheel is of hard grade.
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A 15 mm drilling machine means that it can drill a hole
A.
the work is reciprocated as the wheel feeds to produce cylinders longer than the width of wheel face
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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
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C.
the work is reciprocated as the wheel feeds to produce cylinders shorter than the width of wheel face
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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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