The centrifugal tension in beltsa)does not affect power transmissionb)...
**Centrifugal Tension in Belts**
Centrifugal tension is a phenomenon that occurs in belt drives when the belt is rotating at high speeds. It refers to the outward force exerted on the belt due to its rotation, which causes the belt to stretch and tighten. This tension is caused by the centrifugal force acting on the mass of the belt.
**Impact on Power Transmission**
The centrifugal tension in belts does not directly affect power transmission. Power transmission in belt drives is primarily dependent on the tension in the belt, which is determined by the force applied to the belt by the pulleys. The tension in the belt is responsible for transmitting the torque from the driving pulley to the driven pulley.
**Explanation**
1. **Centrifugal Tension and Power Transmission:** The centrifugal tension in belts does not increase or decrease the power transmission capability of the belt drive system. It is a result of the belt's rotation but does not contribute to the torque or power transferred between the pulleys. Therefore, option A is the correct answer.
2. **Tension in Belt Drives:** The tension in belt drives is crucial for proper power transmission. The tension in the belt is carefully adjusted to ensure adequate grip between the belt and the pulleys. It is the tension that allows the belt to transmit the torque and power effectively.
3. **Factors Affecting Power Transmission:** The power transmission capability of a belt drive system depends on several factors, including the coefficient of friction between the belt and the pulleys, the tension in the belt, and the angle of wrap around the pulleys. These factors determine the maximum torque and power that can be transmitted without slipping.
4. **Slippage and Power Loss:** If the tension in the belt is too low or the coefficient of friction is inadequate, slippage can occur between the belt and the pulleys. This results in a loss of power transmission efficiency and can lead to decreased performance of the driven system.
5. **Centrifugal Tension and Belt Design:** Centrifugal tension is taken into account during the design of belts to ensure that the belt does not exceed its maximum allowable tension limit at high speeds. This is important to prevent belt failure and ensure safe operation of the belt drive system.
In conclusion, while centrifugal tension is a phenomenon that occurs in belt drives at high speeds, it does not directly affect power transmission. The tension in the belt, determined by the force applied by the pulleys, is the primary factor influencing power transmission capability.
To make sure you are not studying endlessly, EduRev has designed Mechanical Engineering study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Mechanical Engineering.