The advantages of the individual drive is/are

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Examoogle · Accepted Answer

All of these

Explanation: An individual drive system uses a separate electric motor for each machine, providing complete independence for each unit. This configuration eliminates the complexities of mechanical transmission systems like lineshafts, pulleys, and belts.

Working Principle: In an individual drive system, each machine is equipped with its own motor directly coupled or connected via a local gear or belt. Since there is no common shaft or central transmission medium, the machine can be operated independently, and power consumption occurs only when the specific machine is active. This eliminates frictional losses associated with long shafting and bearings used in group drive systems.

Key Formulas: $P_{in} = P_{out} + P_{loss}$ — represents the power balance in an individual motor drive where $P_{loss}$ is significantly reduced due to the absence of lineshaft friction.

Key Points: Individual drive eliminates the transmission losses inherent in lineshafts and belts.; Higher initial cost due to multiple motors but lower operating costs.; Enhanced safety as each machine has its own start/stop control.; Allows for variable speed control for individual machines.

Advantages: Flexibility in machine layout and operation.; Higher efficiency due to absence of mechanical transmission friction.; Independent control allows for selective machine usage.; Reduction in noise and improved plant cleanliness.

Disadvantages: Higher initial capital cost due to multiple motor requirements.; Requires more floor space for individual motor mountings.; Complex control wiring compared to a single large motor drive.

Applications: Machine tools (lathes, drilling machines); Textile machinery; Paper mills; Conveyor systems

Additional Info: In group drive systems, a single large motor drives a lineshaft, which is inefficient because the motor must run even if only one machine is working.. Individual drive systems are the standard in modern industrial automation due to the scalability of control logic.

Answer: D is correct — The individual drive system offers operational flexibility, independent control, and eliminates the maintenance and friction losses associated with lineshafts.

Exam Tip: Always remember that individual drives prioritize efficiency and control, whereas group drives are historical systems used primarily for initial cost reduction.

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