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Engineering :: Production Engineering


41.  Which one of the following materials will have lowest cutting speed?
A. Mild steel B. Aluminium
C. Brass D. Bronze
E. High carbon steel    

42.  Spindle speed in a lathe for turning a 40 cm dia rod at a cutting speed of 30 m/min would be
A. 100 rpm B. 206 rpm
C. 238 rpm D. 336 rpm
E. 468 rpm    

43.  When 50 mm rod is turning at a spindle speed of 200 rpm the cutting speed would be
A. 10 - 12 m/min B. 12 - 15 m/min
C. 15 - 20 m/min D. 20 - 28 m/min
E. 30-35 m/min    

44.  While machining a brass casting on a lathe, the type of chuck used is
A. Collect chuck B. Magnetic chuck
C. Face plate D. Three jaw chuck
E. Four jaw chuck    

45.  When large number of components are turned and parted off from a bar, the chuck used is
A. Three jaw chuck B. Four jaw chuck
C. Face place D. Collet chuck
E. Magnetic chuck    

46.  In a drilling operation
A. Torque is equal to the axial force B. Torque is more than the axial force
C. Torque is less than the axial force D. Torque is half the axial force
E. None of above    

47.  Gear tooth vernier is used to measure
A. Gear tooth profile B. Gear tooth thickness
C. Pitch line thickness of gear tooth D. Module
E. Addendum and dedendum    

48.  Stub tooth are cut on gears
A. Subjected to shock and vibration B. To reduce centre distance between shafts
C. To reduce frictional torque D. To improve transmission efficiency
E. None of above    

49.  Cutting speeds for some materials are given as
A. 20 m/min B. 30 m/min
C. 40 m/min D. 80 m/min
E. 100 m/min    

50.  Undercutting is
A. An operation of cutting extra wide threads B. An operation of cutting a groove next to a shoulder on a piece of work
C. Cutting from the base of a work piece D. An operation of cutting deep grooves
E. None of above    




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