Related Questions

Grinding wheel made of silicon carbide is most suitable for grinding materials of low tensile strength (e.g; tough bronze). Grinding is a __________ operation.
A Turning
B Dressing
C Forming
D Surface finishing
A fine grained grinding wheel should not be used for grinding __________ materials.
A Hard
B Brittle
C Soft & ductile
D None of these
For fast removal of materials during grinding, a _________ grinding wheel is used.
A Course grained
B Fine grained
C Medium grained
D None of these
A circular wheel 28 inches in diameter rotates the same number of inches per second as a circular wheel 35 inches in diameter. If the smaller wheel makes x revolutions per second, how many revolutions per minutes does the larger wheel make in terms of x?
A 12x
B 24x
C 36x
D 48x
A wheel that has 6 cogs is meshed with a wheel of 14 cogs. When the smaller wheel has made 21 revolutions the number of revelution made by the larger wheel is --
A 4
B 9
C 12
D 49
A circular wheel 28 inches in diameter rotates (moves) the same number of inches per second as a circular wheel 35 inches in diameter. If the smaller wheel makes x revolutions per second, how many revolutions per minute does the larger wheel make in terms of x?
A 12x
B 48x
C 24x
D 36x
The size of abrasive grain required in a grinding wheel depends upon the
A Amount of material to be removed
B Hardness of material being ground
C Finish desired
D All of these
In drilling softer materials, the cutting speed is ___________ as compared to harder materials.
A Same
B Low
C High
D None of these
A drill mainly used in drilling brass, copper or softer materials, is
A Flat drill
B Straight fluted drill
C Parallel shank twist drill
D Tapered shank twist drill
For softer materials, the point angle of the drill is kept
A Equal to 118°
B Less than 118°
C More than 118°
D Any one of these

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