Which of the following is an application of a multi-motor drive?

Electrical Drives

Based on their assembly, electric drives can be of the following three types.

Multi-motor Drive:

A mechanism in which separate motors are used for operating different parts of the same machine is known as a multi-motor electric drive.

Example: Cranes

The block diagram of a multi motor drive is shown in the figure below:

Advantages of multi-motor drive:

• Multi-motor drives provide better control of the process.
• With the help of multi-motor drives, a complicated process can be automated.
• In a multi-motor drive, each machine is driven by a separate motor. Hence it can be individually started and stopped as desired.
• In multi-motor drives, the absence of belts and line shafts greatly reduces the power loss and risk of accidents.
   

Individual Drive:

In an electric drive system, if an individual machine is fitted with its motor and each operator has complete control over their machine, then it is termed as an individual electric drive.

Examples: Drill machine, lath machine, etc.

Group Drive:

A group drive system uses a high-powered motor to drive a common shaft. When several machines are organized on a single shaft and are driven by a single large motor, this system is known as group drive.

Examples: Food grinding mills, paper mills, etc.