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Engineering :: Machine Design

191.  The gears used for non-intersecting perpendicular shafts are
A. Spur gears B. Helical gears
C. Double helical gears D. Hypoid gears
E. Herringbone gears    
192.  When minimum axial thrust is the criteria, the choice of gears would been
A. Helical gears B. Hypoid gears
C. Herringbone gears D. Worm gears
E. None of the above    
193.  In order to avoid interference for 20 pressure and teeth, minimum number of teeth should be
A. 8 B. 12
C. 16 D. More than 18
E. More than 24    
194.  An automobile gear box has
A. Simple gear train B. Compound gear train
C. Epicycle gear train D. Compound epicyclic gear train
E. None of the above    
195.  Stub tooth is
A. Standard gear tooth B. Equivalent rack tooth
C. Longer than standard tooth depth D. Shorter than standard tooth depth
E. Non-standard tooth    
196.  Gears for wrist watches are generally manufactured by
A. Pitcl, angle B. Lead angle
C. Helix angle D. Axial pitch angle
E. Pressure angle    
197.  A reverted gear train is one in which
A. The direction of rotation of first and last gear is the same B. The direction of rotation of first and last gear is opposite
C. The first and last gear are on the same shaft D. The first and the last gear are essentially on separate but parallel shafts
E. None of the above    
198.  The function of gear box in an automobile is
A. To reduce speed B. To increase speed
C. To provide variable speeds D. To produce torque
E. To increase efficiency    
199.  In a Vee belt the angle between the sides is
A. 10? B. 20?
C. 30? D. 40?
E. 60?    
200.  A chain drive is used for
A. Very short distance B. Short distance
C. Medium distance D. Long distance
E. Distance is no criteria for such drives    

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