10+ Junior Engineer - Maintenance Interview Questions and Answers

Parameters checked in installation of reactor mech seal include alignment, clearance, pressure, and temperature.

• Alignment of the seal with the shaft and other components is crucial for proper functioning.

• Clearance between the seal faces should be within specified limits to prevent leakage.

• Pressure conditions should be monitored to ensure the seal can withstand the operating conditions.

• Temperature limits should be considered to prevent seal damage or failure.

• Other parameters m...read more

Consultancy services refer to professional advice and assistance provided by experts in a specific field.

• Consultancy services involve providing expert advice and guidance to clients.

• Consultants are hired to analyze problems, develop solutions, and implement strategies.

• They may offer specialized knowledge, skills, and experience in areas such as management, finance, technology, or marketing.

• Consultants work closely with clients to understand their needs and provide tailored re...read more

I would pass box A first, then box C, and finally box B in the specified order.

• Pass box A first

• Pass box C next

• Pass box B last

Follow standard procedures to ensure safety, efficiency, and compliance during maintenance tasks.

• 1. Review the maintenance schedule: Check the planned maintenance tasks and prioritize them based on urgency.

• 2. Gather necessary tools and materials: Ensure all required tools and spare parts are available before starting.

• 3. Conduct a risk assessment: Identify potential hazards and implement safety measures to mitigate risks.

• 4. Follow standard operating procedures (SOPs): Adhere t...read more

Managing client relationships involves effective communication, understanding their needs, providing timely solutions, and building trust.

• Maintain open and clear communication with clients to understand their needs and expectations

• Provide timely and efficient solutions to any issues or concerns raised by clients

• Build trust by delivering on promises and consistently meeting or exceeding expectations

• Regularly follow up with clients to ensure satisfaction and address any new req...read more

Programming a glue dispenser machine involves understanding its components, control systems, and software integration.

• Identify the machine's components: pumps, sensors, and controllers.

• Choose a programming language suitable for the machine's control system, like PLC programming.

• Develop a user interface for operators to set parameters like glue flow rate and dispensing time.

• Implement safety features to prevent over-dispensing or machine malfunctions.

• Test the program with diffe...read more

An ejector system is used to create a vacuum by using a high-pressure fluid to entrain a low-pressure fluid.

• The ejector system consists of a motive fluid nozzle, a suction chamber, and a diffuser.

• The motive fluid is usually steam or compressed air.

• The suction chamber is where the low-pressure fluid is entrained and mixed with the motive fluid.

• The diffuser is where the mixed fluid expands and the pressure decreases, creating a vacuum.

• Ejector systems are commonly used in refrig...read more

NPSH is the Net Positive Suction Head required to avoid cavitation in a pump. It can be checked using a formula or a graph.

• NPSH is the minimum pressure required at the suction side of the pump to avoid cavitation.

• It is calculated using the formula NPSH = (P1 - P2)/ρg - h1 - h2, where P1 is the pressure at the pump suction, P2 is the vapor pressure of the fluid, ρ is the fluid density, g is the acceleration due to gravity, h1 is the height of the fluid above the pump suction, ...read more

Spark testing can be checked by using a spark tester to measure the strength and consistency of the spark.

• Use a spark tester to check the strength and consistency of the spark

• Ensure that the spark is strong and consistent across all cylinders

• Check for any irregularities or abnormalities in the spark pattern

• Compare the results to manufacturer specifications

• Make any necessary adjustments or repairs to improve the spark performance

5s is a methodology used to organize a workplace for efficiency and effectiveness by identifying and storing items used, maintaining the area and items, and sustaining the new order.

• Sort - Separate needed tools, parts, and instructions from unneeded items.

• Set in order - Arrange items so they are easy to use and label them to eliminate searching.

• Shine - Clean the work area and equipment regularly.

• Standardize - Establish schedules and methods for maintaining the new order.

• Susta...read more

Standard Operating Procedure for changing machine spindle bearings to ensure optimal performance and longevity.

• 1. Safety First: Ensure the machine is powered off and locked out before starting.

• 2. Gather Tools: Collect necessary tools such as wrenches, screwdrivers, and bearing pullers.

• 3. Remove Spindle: Carefully detach the spindle from the machine, noting the orientation and position.

• 4. Inspect Components: Check for wear on the spindle and housing before replacing bearings.

• 5...read more

The lift purpose is to vertically transport people or goods between different levels of a building.

• Lifts are commonly used in buildings with multiple floors to provide convenient and efficient transportation.

• They can be used for transporting people, furniture, equipment, or any other goods between floors.

• Lifts are equipped with safety features such as emergency stop buttons and sensors to prevent accidents.

• Modern lifts may also have features like voice announcements, touchles...read more

SS304 and SS316 are both stainless steel alloys, but with different compositions and properties.

• SS304 contains 18% chromium and 8% nickel, while SS316 contains 16% chromium, 10% nickel, and 2% molybdenum.

• SS316 is more resistant to corrosion and pitting than SS304, especially in chloride environments.

• SS316 is also more expensive than SS304.

• SS304 is commonly used in food processing equipment, while SS316 is used in marine and chemical processing industries.

Backlash is the play or clearance between mating components in mechanical systems, affecting precision and performance.

• Backlash occurs in gears, where the space between teeth allows for movement without engagement.

• In a lead screw, backlash can cause inaccuracies in positioning due to the gap when reversing direction.

• Example: In a gear train, if one gear rotates, the other may not immediately engage due to backlash, leading to lag.

• Backlash can be minimized using anti-backlash ...read more

Motors work on the principle of electromagnetic induction to convert electrical energy into mechanical energy.

• Motors have a stator and a rotor

• When current flows through the stator windings, it creates a magnetic field

• The magnetic field interacts with the rotor, causing it to rotate

• Types of motors include DC motors, AC motors, and stepper motors

Work analysis involves evaluating the tasks to be performed before starting work to ensure efficiency and safety.

• Identify the scope of work and objectives

• Assess the resources needed for the task

• Consider potential risks and hazards

• Develop a plan of action

• Review previous maintenance records for insights