Q. The soft grade grinding wheels are denoted by the letters

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Q. The helix angle of a drill is __________ for drilling brass.

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Q. For machining a mild steel workpiece using carbide tool, the maximum material will be removed at a temperature of

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Q. Which of the following statement is wrong?

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Q. Climb milling is chosen while machining because

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Q. The material which on machining produces chips with built up edge is

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Q. In down milling, the thickness of chip is

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Q. The broaching operation in which either the work or the tool moves across the other, is known as

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Q. Ultra-sonic machining is best suited for

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Q. In plunge grinding

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Q. 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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Q. A 15 mm drilling machine means that it can drill a hole

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Q. In which of the following machine, the work remains stationary and the tool is rotated?

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Q. 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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Q. The cutting speed of a drill depends upon the

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Q. The part of the tool on which cutting edge is formed is called nose.

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Q. The chamfering is an essential operation after

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Q. The factor responsible for the formation of discontinuous chips is

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Q. The stroke of a shaping machine is 250 mm. It makes 30 double strokes per minute. The overall average speed of operation is

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Q. The actual feed in centreless grinders is given by (where d = Dia. of regulating wheel, n = Revolutions per minute, and α = Angle of inclination of wheel)

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