91. Match the type of gears with their most appropriate description.
    

    Type of gears	Description
    P. Helical	1. Axes non parallel and non intersecting
    Q. Spiral Bevel	2. Axes parallel and teeth are inclined to the axis
    R. Hypoid	3. Axes parallel and teeth are parallel to the axis
    S. Rack and pinion	4. Axes are perpendicular and intersecting, and teeth are inclined to the axis
    	5. Axes are perpendicular and used for large speed reduction
    	6. Axes parallel and one of the gears has infinite radius

    
    

1. 1. P–2, Q–4, R–1, S–6
      

   
   
   

   2. P–1, Q–4, R–5, S–6
      

   
   
   

   3. P–2, Q–6, R–4, S–2
      

   
   
   

   4. P–6, Q–3, R–1, S–5

   
   
   

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   Correct Option: A

   

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92. Match the following
    

    Type of gears	Arrangement of shafts
    P. Bevel gears	1.Nonparallel offset shafts
    Q. Worm gears	2.Nonparallel intersecting shafts
    R. Herringbone	3. Nonparallel, non -intersecting shafts
    S. Hypoid gears	4.Parallel shafts

    
    

1. 1. P – 4, Q – 2, R –1, S – 3
      

   
   
   

   2. P – 2, Q – 3, R – 4, S –1
      

   
   
   

   3. P – 3, Q – 2, R – 1, S – 4
      

   
   
   

   4. P – 1, Q – 3, R – 4, S – 2

   
   
   

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   NA

   Correct Option: B

   NA

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93. Match the Following
    

    List-I (Gear Types)	List-II (Applications)
    A. Worm gears	1. Parallel shafts
    B. Cross helical	2. Nonparallel, gears intersecting shafts
    C. Bevel gears	3. Nonparallel, nonintersecting shafts
    D. Spur gears	4. Large speed ratios

    
    

1. 1. A - 2 , B - 3 , C - 4 , D - 1
      

   
   
   

   2. A - 4 , B - 3 , C - 2 , D - 1
      

   
   
   

   3. A - 3 , B - 4 , C - 2 , D - 1
      

   
   
   

   4. A - 1 , B - 3 , C - 4 , D - 2

   
   
   

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   NA

   Correct Option: B

   NA

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94. Spherical roller bearings are normally used
    

1. 1. for increased radial load
      

   
   
   

   2. for increased thrust load
      

   
   
   

   3. when there is less radial load
      

   
   
   

   4. to compensate for angular misalignment
      

   
   
   

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   NA

   Correct Option: D

   NA

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95. Starting friction is low in
    

1. 1. hydrostatic lubrication
      

   
   
   

   2. hydrodynamic lubrication
      

   
   
   

   3. mixed (or semi fluid) lubrication
      

   
   
   

   4. boundary lubrication

   
   
   

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1. View Hint View Answer Discuss in Forum

   It is due to thick fluid friction from the start

   Correct Option: A

   It is due to thick fluid friction from the start

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