10+ Ruban Memorial Hospital Interview Questions and Answers

PLCs have various types of inputs and outputs for communication and control.

• PLCs have digital inputs and outputs for binary signals.

• Analog inputs and outputs are used for continuous signals.

• Specialized inputs and outputs include high-speed counters, pulse outputs, and communication modules.

• Examples of PLC input devices are push buttons, limit switches, and sensors.

• Examples of PLC output devices are motors, solenoids, and lights.

PLC program for automatic water tank fill up with indicators

• Define input sensors for water level and output actuators for water fill valve

• Create ladder logic to control the fill valve based on water level sensors

• Add indicators to display water level and fill status

• Test and debug the program to ensure proper functionality

Why analysis of problems is important in maintenance engineering?

• Identifies root cause of problems

• Helps in developing effective solutions

• Reduces downtime and maintenance costs

• Improves equipment reliability and performance

• Enables proactive maintenance approach

• Examples: Failure mode and effects analysis (FMEA), Root cause analysis (RCA), Fishbone diagram

Press machines use hydraulic or mechanical force to shape or cut materials.

• Press machines use a ram or piston to apply force to a material.

• Hydraulic press machines use fluid pressure to generate force.

• Mechanical press machines use a flywheel or motor to generate force.

• Press machines can be used for stamping, forging, punching, and more.

• Safety precautions must be taken when operating press machines to prevent accidents.

SAP T-codes are transaction codes used in SAP systems to execute specific functions.

• T-code SM01 is used to lock/unlock transactions

• T-code SE11 is used to create or modify database tables

• T-code MM01 is used to create a material master record

• T-code VA01 is used to create a sales order

• T-code FBL3N is used to display GL account line items

A power pack is a device that converts mechanical energy into electrical energy. Its main components include an engine, generator, and control system.

• Power pack converts mechanical energy into electrical energy

• Main components include engine, generator, and control system

• Engine provides mechanical energy to generator

• Generator converts mechanical energy into electrical energy

• Control system regulates the power output

Parallelism and perpendicularity are crucial in press machines for accurate and consistent production.

• Parallelism ensures that the ram and bed of the press machine move in a straight line, preventing any deviation in the production process.

• Perpendicularity ensures that the ram and bed of the press machine move at a right angle to each other, preventing any twisting or bending of the material being pressed.

• Any deviation from parallelism or perpendicularity can result in defect...read more

5S is a methodology for workplace organization and efficiency. There are 5 types of S's that are used in this methodology.

• Sort - removing unnecessary items from the workplace

• Set in order - organizing the remaining items in a logical manner

• Shine - cleaning and maintaining the workplace

• Standardize - creating standard procedures for maintaining the workplace

• Sustain - ensuring that the 5S methodology is continuously implemented and improved upon

Valves are devices used to control the flow of fluids or gases. There are several types of valves used in various industries.

• Gate valve

• Ball valve

• Butterfly valve

• Globe valve

• Check valve

• Diaphragm valve

• Needle valve

• Pressure relief valve

Sensors are devices that detect and respond to physical stimuli.

• There are various types of sensors such as temperature sensors, pressure sensors, proximity sensors, motion sensors, etc.

• Some examples of sensors commonly used in maintenance include vibration sensors, acoustic sensors, and thermal imaging sensors.

• Sensors can be used to monitor equipment performance, detect faults, and predict maintenance needs.

• Advancements in sensor technology have led to the development of smar...read more

MTBF and MTTR are two important metrics used in maintenance engineering.

• MTBF stands for Mean Time Between Failures and is a measure of reliability.

• MTTR stands for Mean Time To Repair and is a measure of maintainability.

• MTBF = Total uptime / Number of failures

• MTTR = Total downtime / Number of repairs

• MTBF and MTTR are used to evaluate and improve maintenance processes.