Which V block is used for checking triangle effect? 

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RRB JE ME CBT 2 Previous Paper 1: Held on 29 Aug 2019
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  1. V block with 30-degree angle is used 
  2. V block with 120-degree angle is used
  3. V block with 90-degree angle is used
  4. V block with 60-degree angle is used

Answer (Detailed Solution Below)

Option 2 : V block with 120-degree angle is used
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Explanation:

F1 Krupalu Madhu 29.09.20 D11

The major purpose of V-blocks is to hold cylindrical pieces or, more to the point, to establish precisely the centerline or axis of a cylindrical piece.

  • For special purposes such as checking triangle effects or taps and other three-fluted tools, 120°  included angle vee-blocks are also available.

Important Points

  • Standard V-blocks come as 45° blocks, i.e., the V-slides slope 45 degrees from horizontal or vertical, the included angle of the V being, of 90°.
  • Because they are made with sides and ends parallel and/or square to each other, they may be used lying flat or turned over on their sides, or up-ended vertically.
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