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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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