171. Match the items in Group-I and II
     Group-I
     P. Yield point elongation
     Q. Spring back
     R. Wrinkling
     S. Residual stresses
     Group-II
     1. Distortions of dimension
     2. Leuder's bands
     3. Plastic deformation
     4. Compressive stress Codes:

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

   
   
   

   2. P Q R S
      4 3 1 2

   
   
   

   3. P Q R S
      2 3 4 1

   
   
   

   4. P Q R S
      2 1 4 3

   
   
   

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1. View Hint View Answer Discuss in Forum

   P – 2 Q – 3 R – 4 S – 1

   Correct Option: C

   P – 2 Q – 3 R – 4 S – 1

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172. In a surface broaching process, a broach having 5 mm pitch and cut per teeth 0.05 mm is used for reducing the thickness by 6 mm. If the length of the workpiece is 50 mm and the cutting speed is 0.5 m/s, the time required/pass in second is

1. 1. 1.1

   
   
   

   2. 1.2

   
   
   

   3. 1.3

   
   
   

   4. 1200

   
   
   

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1. View Hint View Answer Discuss in Forum

   No. of teeth Required =	6	= 120
   	0.05

   
   Cutting length = 120 × 5 = 600 mm L = 50 + 600 mm = 650
   

   t =	650	= 1.3 seconds
   	0.5 × 100

   
   

   Correct Option: C

   No. of teeth Required =	6	= 120
   	0.05

   
   Cutting length = 120 × 5 = 600 mm L = 50 + 600 mm = 650
   

   t =	650	= 1.3 seconds
   	0.5 × 100

   
   

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173. In deep drawing of sheet metal, spring-loaded stripper clamps the work until:

1. 1. The punch penetrates twice the stock thickness

   
   
   

   2. It removes wrinkles on the product edges

   
   
   

   3. Shedder removes the work from the tools

   
   
   

   4. Punch is completely withdrawn from the work material
      

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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174. Match the following
     Product
     P. Food cans
     Q. Connecting rods
     R. Metal foils
     Manufacturing process
     1. Forging
     2. Rolling
     3. Deep drawing
     4. Extrusion

1. 1. P Q R
      3 1 2

   
   
   

   2. P Q R
      1 2 4

   
   
   

   3. P Q R
      4 3 3

   
   
   

   4. P Q R
      2 4 1

   
   
   

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1. View Hint View Answer Discuss in Forum

   P – 1, Q – 2, R – 4

   Correct Option: B

   P – 1, Q – 2, R – 4

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175. In sheet metal working, the spring back increase when P. Ratio of bend radius to sheet thickness is small Q. Young's modulus of the sheet is low R. Yieid strength of the sheet is high S. Tension is applied during bending

1. 1. P, Q, R

   
   
   

   2. Q, R

   
   
   

   3. P, Q, S

   
   
   

   4. P, R, S

   
   
   

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1. View Hint View Answer Discuss in Forum

   P, Q, R

   Correct Option: A

   P, Q, R

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