428. The spindle speeds in a cutting tool are 160, 229, 328, 496… The next higher speed will be
A.642
B.660
C.671
D.695

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429. For machining a casting on a lathe, it should be held in
A.Collet chuck
B.Magnetic chuck
C.Three-jaw chuck
D.Four-jaw chuck

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430. In automatic machine where large number of components are machined from a bar, it is held in
A.Collect chuck
B.Magnetic chuck
C.Three-jaw chuck
D.Four-jaw chuck

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431. Turret lathes in which long turning cuts are made by moving the saddle along the bedways of the machine are called
A.Drum type turret lathes
B.Ram type turret lathes
C.Saddle type turret lathes
D.Automatic screw machines

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432. The purpose of tumbler gears in lathe is to
A.Cut gears
B.Cut threads
C.Reduce spindle speed
D.Give desired direction of movement to the lathe carriage

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433. Turret lathes equipped with spindles which can be fitted with a universal 2-jaw chuck are referred to as
A.Drum type machines
B.Saddle type machines
C.Chucking machines
D.Universal lathes

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434. On bar-type turret lathes, work to be machined is gripped in
A.Three-jaw chucks
B.Four-jaw chucks
C.Pneumatic chucks
D.Collet

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