Maintenance Technician Interview Questions and Answers for Freshers

A safety circuit is an electrical circuit designed to protect people and equipment from potential hazards.

• A safety circuit typically includes components such as emergency stop buttons, safety switches, and safety relays.

• It is used to monitor and control the operation of machinery or equipment to ensure safe operation.

• When a safety hazard is detected, the safety circuit will activate protective measures, such as stopping the machinery or isolating power.

• Safety circuits are com...read more

There are various types of valves used in hydraulic systems, including directional control valves, pressure control valves, and flow control valves.

• Directional control valves control the direction of fluid flow in the system, such as a spool valve.

• Pressure control valves regulate the pressure of the fluid, such as a relief valve.

• Flow control valves regulate the flow rate of the fluid, such as a needle valve.

• Other types of valves include check valves, ball valves, and gate val...read more

PM stands for Preventive Maintenance, MTTR is Mean Time To Repair, and MTBF is Mean Time Between Failures.

• PM is a proactive maintenance strategy that involves regularly scheduled maintenance to prevent equipment failure.

• MTTR is the average time it takes to repair a piece of equipment after a failure.

• MTBF is the average time between equipment failures.

• These metrics are important for measuring the effectiveness of maintenance programs and identifying areas for improvement.

• For e...read more

Preload is the amount of force applied to a bearing before it is put into operation. Bearing replacement involves removing the old bearing and installing a new one.

• Before installing a new bearing, clean the housing and shaft thoroughly.

• Apply a thin layer of lubricant to the bearing and shaft.

• Ensure that the bearing is properly aligned and seated in the housing.

• Tighten the fasteners to the manufacturer's recommended torque specifications.

• Check the preload and adjust if necessa...read more

Maintenance is the process of ensuring that equipment, machinery, and facilities are in good working condition.

• Regular inspection and repair of equipment

• Preventive maintenance to avoid breakdowns

• Replacing worn-out parts

• Cleaning and lubricating machinery

• Ensuring safety standards are met

• Maintaining records of maintenance activities

• Responding to emergency repairs

• Continuous improvement of maintenance processes