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The gears employed for connecting two non-intersecting and non-parallel, i.e., non-coplanar shafts are   
  • a)
    Bevel gears
  • b)
    Spiral gears
  • c)
    Helical gears
  • d)
    Mitre gears 
Correct answer is option 'B'. Can you explain this answer?
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The gears employed for connecting two non-intersecting and non-paralle...
Gears for Connecting Non-Intersecting and Non-Parallel Shafts

Introduction:
When it comes to connecting two non-intersecting and non-parallel shafts, bevel gears, spiral gears, helical gears, and mitre gears are commonly used. However, the correct answer to this question is option B: Spiral gears. In this response, we will explore the reasons behind this choice and discuss the characteristics of each type of gear.

Explanation:

1. Bevel Gears:
- Bevel gears are cone-shaped gears that are used to connect non-parallel shafts.
- These gears have teeth that are cut along the surface of a cone.
- They are commonly used in applications where the shafts need to change direction and transmit motion at a right angle.
- However, bevel gears are not suitable for connecting non-intersecting shafts.

2. Spiral Gears:
- Spiral gears are similar to bevel gears in terms of their cone-shaped design.
- However, spiral gears have teeth that are cut in a spiral pattern around the surface of the cone.
- This spiral arrangement allows for a smoother and quieter operation compared to bevel gears.
- Spiral gears are suitable for connecting non-intersecting and non-parallel shafts as they can transmit motion between shafts at various angles.

3. Helical Gears:
- Helical gears are cylindrical gears with teeth that are cut at an angle.
- These gears have teeth that are oriented in a helix shape, similar to a screw thread.
- Helical gears are primarily used to transmit motion between parallel shafts.
- While they can handle a slight misalignment between the shafts, they are not suitable for connecting non-intersecting shafts.

4. Mitre Gears:
- Mitre gears are another type of bevel gear, but they have equal numbers of teeth and are used to connect perpendicular shafts.
- These gears have a 1:1 ratio, meaning they do not change the speed or torque between the connected shafts.
- Similar to bevel gears, mitre gears are not suitable for connecting non-intersecting and non-parallel shafts.

Conclusion:
In summary, when connecting non-intersecting and non-parallel shafts, the most suitable type of gear is spiral gears. These gears provide smooth and quiet operation while allowing for the transmission of motion at various angles. However, it is important to consider the specific requirements of the application and choose the appropriate gear type accordingly.
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The gears employed for connecting two non-intersecting and non-parallel, i.e., non-coplanar shafts are a)Bevel gearsb)Spiral gearsc)Helical gearsd)Mitre gearsCorrect answer is option 'B'. Can you explain this answer?
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