Junior Engineer - Maintenance

10+ Junior Engineer - Maintenance Interview Questions and Answers

Updated 28 Feb 2025
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Q1. HOW PARAMETERS CHECKE IN INSTALLATION OF REACTOR MECH SEAL

Ans.

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

Q2. For example what is implied by consultancy services

Ans.

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

Junior Engineer - Maintenance Interview Questions and Answers for Freshers

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Q3. If you have to pass three boxes i.e. A,B,C in X,Y,Z path what you will do ?

Ans.

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

Q4. Glass line thickness and how can check it.

Ans.

Glass line thickness can be checked using ultrasonic thickness gauges.

  • Ultrasonic thickness gauges use high-frequency sound waves to measure the thickness of materials.

  • The gauge is placed on the glass surface and sends sound waves through the glass.

  • The time taken for the sound waves to bounce back is measured and used to calculate the thickness of the glass.

  • The thickness can be compared to the required specifications to ensure it meets the standards.

  • Regular checks should be pe...read more

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Q5. How you can manage client relationship

Ans.

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

Q6. HOW CAN WORK EJECTOR SYSTEM

Ans.

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

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Q7. NPSH and how can check it

Ans.

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

Q8. How can check Spark testing.

Ans.

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

Junior Engineer - Maintenance Jobs

Maintenance Engineer / Junior Maintenance Engineer 1-2 years
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Electrical and Maintenance Junior Engineer 4-7 years
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₹ 3 L/yr - ₹ 4 L/yr
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Junior Maintenance Engineer - Taloja 0-2 years
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₹ 2 L/yr - ₹ 4 L/yr
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Q9. What is 5s and explain every s briefly

Ans.

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

Q10. How carrier gole ?

Ans.

Career goals are personal objectives and ambitions that an individual sets for their professional growth and development.

  • Set specific and achievable career goals

  • Regularly review and adjust goals as needed

  • Seek opportunities for skill development and advancement

  • Network with professionals in the field

  • Stay updated on industry trends and technologies

Q11. What is the lift purpose

Ans.

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

Q12. Deff between SS304 AND SS316

Ans.

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.

Q13. Working principles of Motors?

Ans.

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

Q14. Work analyse before working

Ans.

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

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