Polyplex Diploma Trainee Engineer Interview Questions and Answers

Q1. Different Type of Heat transfer?
Ans. 
Different types of heat transfer include conduction, convection, and radiation.
• Conduction: Heat transfer through direct contact between particles. Example: Touching a hot stove.

• Convection: Heat transfer through the movement of fluids (liquids or gases). Example: Boiling water.

• Radiation: Heat transfer through electromagnetic waves. Example: Feeling the warmth of the sun.
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Q2. What is entropy?
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Entropy is a measure of disorder or randomness in a system.
• Entropy is a thermodynamic property that quantifies the amount of energy in a physical system that is not available to do work.

• It is a measure of the number of possible arrangements of the particles in a system.

• Entropy tends to increase in closed systems over time, leading to a state of maximum disorder.

• An example of entropy is the melting of ice into water, wh...read more
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Q3. What are the major specification you see when you're buying AC.
Ans. 
Major specifications to consider when buying an AC include cooling capacity, energy efficiency, noise level, and brand reputation.
• Cooling capacity measured in BTUs or tons

• Energy efficiency rating like EER or SEER

• Noise level in decibels

• Brand reputation for reliability and customer service
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Q4. Laws of Thermodynamic with example?
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Laws of Thermodynamics explain the behavior of energy in a system.
• First Law: Energy cannot be created or destroyed, only transferred or converted. Example: A car engine converts fuel (chemical energy) into motion (kinetic energy).

• Second Law: Entropy in a closed system always increases, meaning energy tends to disperse. Example: Ice melting into water due to an increase in entropy.

• Third Law: As temperature approaches ab...read more
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Q5. What are backward and forward stroke in shaping machine
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Backward stroke is the return stroke of the ram in shaping machine, while forward stroke is the cutting stroke.
• Backward stroke is when the ram moves away from the workpiece

• Forward stroke is when the ram moves towards the workpiece to make the cut

• Backward stroke is non-cutting, while forward stroke is cutting

• Backward stroke allows the tool to clear the workpiece, while forward stroke performs the cutting operation
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Q1. About your day to day Activities
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Q2. Random Tech Questions
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MCQ Question of general study.

Q1. Electrical besis question.
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Q1. What are your salary expectations?
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Q2. Tell me about yourself.
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Q3. Where do you see yourself in 5 years?
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Q4. Share details of your previous job.
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Q5. What is your family background?
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Q1. What is preventive maintenance
Ans. 
Preventive maintenance is a proactive approach to maintenance that aims to prevent equipment failure before it occurs.
• Regularly scheduled inspections and maintenance

• Replacing worn or damaged parts before they cause a breakdown

• Cleaning and lubricating equipment to prevent wear and tear

• Keeping accurate records of maintenance activities

• Examples: changing the oil in a car, replacing air filters in HVAC systems, inspecting
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Q2. What do you know about sap pm module
Ans. 
SAP PM module is used for managing maintenance activities of an organization.
• PM stands for Plant Maintenance

• It helps in planning and scheduling maintenance tasks

• Tracks equipment and maintenance history

• Provides cost analysis and reporting

• Integrates with other SAP modules like MM and FI

• Example: A manufacturing company can use SAP PM to schedule maintenance of their production equipment
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Q3. What are the utilities equipments you handled
Ans. 
I have handled various utilities equipments including generators, chillers, HVAC systems, and water treatment plants.
• Generators: responsible for maintenance and repair of diesel and gas generators

• Chillers: handled installation and maintenance of air-cooled and water-cooled chillers

• HVAC systems: managed repair and maintenance of heating, ventilation, and air conditioning systems

• Water treatment plants: responsible for op...read more
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Q4. What are the various types of bearings
Ans. 
Bearings are used to reduce friction between two moving parts. There are several types of bearings.
• Plain bearings

• Rolling element bearings

• Jewel bearings

• Fluid bearings

• Magnetic bearings
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Q1. About current employer, machines, process, mould, material and parameter.
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Q2. About planning, manpower, 5S, kaizen, documentation etc
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Q3. About aim to what you want to become in next 10 years.
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Q4. About working pressure and management team relationship.
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Q1. What are your salary expectations?
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Q2. What is your family background?
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Q3. Share details of your previous job.
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Q4. Why should we hire you?
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Q5. Why are you looking for a change?
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Q6. What are your strengths and weaknesses?
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Q7. Tell me about yourself.
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Q8. All that mention above
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