86503. A drill considered as a cutting tool having zero rake, is known as a
86504. Which of the following statement is wrong about ultra-sonic machining?
86505. In oblique cutting system, the maximum chip thickness occurs at the middle.
86506. Larger end cutting edge angle __________ tool life.
86507. The lead screw of a lathe has __________ threads.
86508. A left hand tool on a lathe cuts most efficiently when it travels
86509. The correct sequence of tool materials in increasing order of their ability to retain their hot hardness is
86510. Which of the following statement is incorrect with reference of lathe cutting tools?
86511. In the relation VTn = C, the value of n for carbide tools is
86512. In up milling, the thickness of chip is
86513. The machining of titanium is difficult due to
86514. In orthogonal cutting system, the maximum chip thickness occurs at the middle.
86515. Lapping is an operation of
86516. The different spindle speeds on a lathe form
86517. If the helix angle of the drill is made __________ 30°, then the torque required to drive the drill at a given feed will be more.
86518. The angle included between the two lips projected upon a plane parallel to the drill axis and paralled to the two cutting lips, is called helix angle.
86519. In hot machining, tool is made of
86520. In ultra-sonic machining, the metal is removed by
86521. The velocity of tool relative to the workpiece is known as cutting velocity.
86522. Grinding wheels should be tested for balance
86523. The example of snag grinding is
86524. The angle between the shear plane and __________ is called shear angle.
86525. In machining soft materials, a tool with negative relief angle is used.
86526. Which of the following parameters influence the axial feed rate in centreless grinding?
86527. The lathe spindles are usually made hollow and provided with
86528. The top and sides of the table of a shaper usually have
86529. The binding material used in cemented carbide tools is
86530. In machining metals, chips break due to __________ of work material.
86531. For softer materials, the point angle of the drill is kept
86532. When the backgear is engaged in a backgeared headstock, the spindle speed reduces considerably.
86533. In continuous chip cutting, the maximum heat is taken by the cutting tool.
86534. Which of the following statement is correct regarding grinding of high carbon steel?
86535. The rear teeth of a broach
86536. High speed steel drills can be operated at about __________ the speed of high carbon steel drills.
86537. When the end of a tap is tapered for about three or four threads, it is known as a
86538. Crater wear is predominant in
86539. The method of centreless grinding used to produce taper is
86540. In a shaper, the length of stroke is increased by
86541. Carbon tool steels have low-heat and wear-resistance.
86542. Trepanning is an operation of
86543. The abrasive recommended for grinding materials of high tensile strength is
86544. The factor responsible for the formation of continuous chips with built up edge is
86545. An important geometrical quantity in the cutting of metals which can be used as a criterion for machinability of metals is
86546. In centreless grinding, the surface speed of regulating wheel is
86547. In metal cutting, use of low feeds and high cutting speeds is desired when the objective is
86548. The angle on which the strength of the tool depends is
86549. Larger than 15° side cutting edge angle
86550. Which of the following statement is correct for orthogonal cutting system?
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