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Self locking machine has efficiency less than 50% but reversible machines has efficiency more than 50%

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Why is the synchronous machine called a reversible machine?

A synchronous machine is called a reversible machine because it can operate in both motor and generator modes. In motor mode, it converts electrical energy into mechanical energy to produce motion, while in generator mode, it converts mechanical energy into electrical energy. This ability to switch between modes makes it reversible.


What is the efficiency for self locking lifting machine?

The efficiency of a self-locking lifting machine is typically very high, often close to 100%. This is because self-locking mechanisms prevent the load from slipping or descending unintentionally, ensuring that the lifting process is secure and stable. Regular maintenance and inspection are important to maintain this high efficiency over time.


What force causes a difference between the ideal and the mechanical advantage Of the same object?

The force required to overcome friction between parts of a machine or device causes a difference between the ideal and mechanical advantage of the object. Friction reduces the efficiency of a machine by causing energy losses, making it harder to achieve the theoretical ideal advantage.


The output work of a machine compared to the input work is?

The output work of a machine is typically less than the input work, due to factors such as friction, heat loss, and other inefficiencies in the machine's operation. This difference between input and output work is known as the efficiency of the machine.


What force causes a difference between the ideal and the actual mechanical advantage?

Friction is the main force that causes a difference between the ideal and actual mechanical advantage. Other factors like misalignment of the machine parts, wear and tear, and measurement inaccuracies can also contribute to this difference.

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