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Consider the following statements in respect of flexible couplings:
1. The flanges of flexible coupling are usually made of grey cast iron FG200.                
2. In the analysis of flexible coupling, it is assumed that the power is transmitted by the shear resistance of the pins.
3. Rubber bushes with brass lining are provided to absorb misalignment between the two shafts.
Which of the statements given above are correct?  
  • a)
    1, 2 and 3  
  • b)
    Only 1 and 2
  • c)
    Only 2 and 3  
  • d)
    Only 1 and 3 
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Consider the following statements in respect of flexible couplings:1. ...
Since the pin is subjected to bending and shear stresses, therefore the design must be checked either for the maximum principal stress or maximum shear stress theory. 
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Most Upvoted Answer
Consider the following statements in respect of flexible couplings:1. ...
Statement 1: The flanges of flexible coupling are usually made of grey cast iron FG200.

The statement is incorrect. The flanges of flexible couplings can be made from a variety of materials depending on the application requirements. While grey cast iron FG200 is commonly used in some couplings, other materials like steel, aluminum, and stainless steel can also be used.

Statement 2: In the analysis of flexible coupling, it is assumed that the power is transmitted by the shear resistance of the pins.

The statement is correct. In the analysis of flexible couplings, it is assumed that the power is transmitted through the shear resistance of the pins. The pins are designed to carry the load and transmit torque between the two shafts.

Statement 3: Rubber bushes with brass lining are provided to absorb misalignment between the two shafts.

The statement is correct. Rubber bushes with brass lining are commonly used in flexible couplings to absorb misalignment between the two shafts. The rubber material provides flexibility and damping properties, while the brass lining provides strength and support.

Summary:
- Statement 1 is incorrect as the flanges of flexible couplings can be made from various materials, not just grey cast iron FG200.
- Statement 2 is correct as the power transmission in flexible couplings is assumed to occur through the shear resistance of the pins.
- Statement 3 is correct as rubber bushes with brass lining are used to absorb misalignment between the two shafts in flexible couplings.
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Consider the following statements in respect of flexible couplings:1. The flanges of flexible coupling are usually made of grey cast iron FG200. 2. In the analysis of flexible coupling, it is assumed that the power is transmitted by the shear resistance of the pins.3. Rubber bushes with brass lining are provided to absorb misalignment between the two shafts.Which of the statements given above are correct?a)1, 2 and 3 b)Only 1 and 2c)Only 2 and 3 d)Only 1 and 3Correct answer is option 'D'. Can you explain this answer?
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