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In______ drive the machine drive by means of separate motor,
Individual drive
Motor drive
Group drive
None
Individual drive
An individual drive is an electric drive system where a separate electric motor is used to drive each specific machine component or piece of equipment. This provides independent control and operation of the machine without dependency on other machinery.
An individual drive is an electric drive system where a separate electric motor is used to drive each specific machine component or piece of equipment. This provides independent control and operation of the machine without dependency on other machinery.
PoutтАЛ=╧ДтЛЕ╧Й тАФ Relationship between mechanical power output, torque, and angular velocity.
PinтАЛ=╬╖PoutтАЛтАЛ тАФ Power drawn from the supply considering efficiency ╬╖.
In an individual drive system, a dedicated motor is coupled to the load via a transmission system such as a belt, gear, or direct coupling. Because each machine has its own power source, the motor is sized specifically according to the power rating and starting torque requirements of that single unit, allowing for individual startup, shutdown, and speed regulation.
Each machine is equipped with its own motor.
Eliminates the risk of total plant shutdown due to line shaft failure.
Allows for flexible placement of machinery in the shop floor layout.
Independent operation of machines.
High overall efficiency due to absence of line shafts and belts.
Individual speed control and reversal is easier.
No downtime for the entire plant if one motor fails.
Higher initial capital investment.
Complexity in maintenance due to a large number of individual motors.
Motor size must be selected to match peak load, potentially reducing efficiency at low loads.
Machine tools (lathes, drilling machines).
Conveyor systems.
Small domestic appliances.
Centrifugal pumps and fans.
| Feature | Individual Drive | Group Drive |
|---|---|---|
Motor allocation | One motor per machine | One motor for many machines |
Group drive utilizes a single motor to drive a long line shaft, which in turn drives multiple machines via belts, causing high mechanical transmission losses and safety hazards.
Option B (Motor drive) is a generic term often used synonymously with Electric Drive, but 'Individual Drive' is the specific classification defined in the question.
A is correct тАФ Individual drive systems utilize a dedicated motor to power a single machine, ensuring independent operation and efficiency.
Always remember that in exams, Group Drive is associated with high friction losses due to line shafts, whereas Individual Drive is favored for modern industrial flexibility and control.