1. What Is preventive maintenance and break down maintenance 2.types of break types of coupling and it's function

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Preventive maintenance involves regular inspections and maintenance to prevent breakdowns, while breakdown maintenance is performed after a breakdown occurs.

Preventive maintenance is planned maintenance performed on a regular basis to prevent equipment failure.
Breakdown maintenance is reactive maintenance performed after a breakdown has occurred to restore equipment to working condition.
Types of couplings include rigid, flexible, and fluid couplings.
Rigid couplings do not allow for any misalignment between shafts and are used when shafts are perfectly aligned.
Flexible couplings allow for some misalignment and are used when shafts are not perfectly aligned.
Fluid couplings use hydraulic fluid to transmit power between shafts and dampen vibrations.

1. What Is preventive maintenance and break down maintenance 2.types of break types of coupling and it's function

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