Mechanical Engineering Objective Questions { Production Technology }

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645. Side relief angle of a single point tool is the angle

A. By which the face of the tool is inclined sideways

B. By which the face of the tool is inclined towards back

C. Between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base

D. Between the surface of the flank immediately below the point and a plane at right angles to the centre line of the point of the tool

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646. A left hand tool on lathe is used for turning in the direction

A. From right to left

B. From left to right

C. Across the bed

D. In angular position on compound slide

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647. Counterboring is the operation of

A. Enlarging the end of a hole cylindrically

B. Cone-shaped enlargement of the end of a hole

C. Smoothing and squaring the surface around a hole

D. Sizing and finishing a hole

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648. Power requirement, with increase in cutting speed

A. More or less remains constant

B. Increases linearly

C. Decreases linearly

D. Unpredictable

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649. Heavy speed shafts to be turned by carbide tools on centre lathe must be supported in

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650. It is required to index 119 divisions. It can be done by

A. Simple indexing

B. Direct indexing

C. Compound indexing

D. Differential indexing

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651. One of the important parameters of lathe specification is

A. Swing over tool bed

B. Swing over tool post

C. Distance between centres

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