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You Are On Multi Choice Question Bank SET 1473

73651. In order to obtain a surface finish in the range of 0.75 μm to 1.25 μm , the operation used is called.





73652. Which of the following statement is correct as regard to up milling?





73653. In determining the various forces on the chip, Merchant assumed that the





73654. Stellite preserve hardness upto a temperature of





73655. Hard and tough materials like cast iron should be turned at





73656. In oblique cutting system, the cutting edge of the tool





73657. When the shear angle is small





73658. A fine grained grinding wheel is used to grind





73659. EDM machining is applied for





73660. In gear hobbing





73661. Holes are machined by push broaches only for sizing.



73662. The increase in depth of cut and feed rate __________ surface finish.




73663. A lathe with four steps on the cone pulley and with backgears will have





73664. The parameter which completely defines the chip formation in a metal cutting process is





73665. In machining cast iron, no cutting fluid is required.



73666. In machining metals, surface roughness is due to





73667. A diamond locating pin is used in jigs and fixtures because





73668. In metal machining, the zone where the heat is generated due to friction between the moving chip and the tool face, is called





73669. The drill spindles are provided with standard taper known as




73670. The operation performed on a shaper is





73671. Chemical milling operation is performed





73672. The thrust force will increase with the increase in





73673. The broaching operation in which the work moves past the stationary tool is called





73674. In transverse grinding





73675. If the grain size is __________ the tool life is better.



73676. Flank wear is due to the abrasive action of hard mis-constituents including debris from built up edge as the work material rubs the work surface.



73677. The operation of reproduction of an outline of a template on a workpiece is called face milling.



73678. The usual value of the point angle of a drill is





73679. Buffing wheels are made of





73680. Jigs are heavier than fixtures in construction.



73681. In electro-chemical machining, the gap between the tool and work is kept as





73682. The process of improving the cutting action of the grinding wheel is called





73683. The cutting speed for drilling aluminium, brass and bronze with carbon steel drills is __________ cutting speed for drilling mild steel with high speed steel drills.




73684. In electro-discharge machining, the tool is connected to cathode.



73685. Broaching is applied for machining





73686. Half nut is used to lock the lathe carriage to the lead screw for thread cutting.



73687. The advantage of a broaching operation is that





73688. The tool life __________ as the cutting speed increases.



73689. The infeed grinding is used to





73690. The enlarging of an existing circular hole with a rotating single point tool is called





73691. In the relation VTn = C, the value of n for high speed steel tools varies from 0.25 to 0.40.



73692. Glazing in grinding wheels __________ cutting capacity.




73693. The usual value of the helix angle of a drill is





73694. The cutting speed for counter-boring should be __________ that of drilling operation.




73695. In drilling mild steel and brass, the point angle of a drill is 118°.



73696. The tail stock set over method of taper turning is preferred for





73697. The chuck preferred for quick setting and accurate centering of a job is





73698. Negative rakes are used for





73699. A bottoming tap has





73700. The effect of setting a boring tool above centre height leads to





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