MAHLE Engine Components CNC Operator Interview Questions and Answers

First off all, we ought to have some sortoff automobile and production knowledge because they will definitely check our technical skill secondly, listening skill and fluency plays significant factor

Q1. It was more like technical round moreover you have to be clear in purpose of your life based upon they are recruiting
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Q2. Define tqbm ? What is bom?
Ans. 
TQBM stands for 'Tudo Que Bem' which means 'Everything is fine' in Portuguese. BOM means 'good' in Portuguese.
• TQBM is a common phrase used in Brazil to ask if everything is okay.

• BOM is often used as a response to TQBM to indicate that everything is good.

• Both TQBM and BOM are informal and commonly used in everyday conversations.

• Example: A friend asks 'TQBM?' and you respond 'BOM, e voce?' which means 'Everything is fine
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Q1. Questions related to your life and society to check your presence of mind and awareness of the world.
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Q2. Question from ic engines,about their working and processes involved.
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Q1. What is mean of TTR & why required for powder coating process ?
Ans. 
TTR stands for Total Thickness Range and is required for powder coating process to ensure proper adhesion and durability.
• TTR is the range of thickness of the substrate and any coatings applied to it

• It is important for powder coating as it ensures proper adhesion and durability

• If the TTR is too large, the coating may not adhere properly or may crack and peel over time

• Examples of substrates with varying TTR include alumi
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Q2. What is mean of detection & prevention pokayoke?
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Detection and prevention poka-yoke refers to the use of techniques to identify and prevent errors in a process.
• Poka-yoke is a Japanese term for mistake-proofing

• Detection poka-yoke involves identifying errors as they occur

• Prevention poka-yoke involves designing processes to prevent errors from occurring

• Examples of poka-yoke include using checklists, color-coding, and physical barriers

• Poka-yoke can improve quality, reduc
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Q3. Which condition PH decrease in conversion coating?
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Decrease in pH can occur due to various factors in conversion coating.
• Decrease in pH can be caused by the addition of an acid or acidic solution.

• Presence of reactive metals in the coating can lead to a decrease in pH.

• Contamination by organic materials or impurities can also lower the pH.

• Chemical reactions during the conversion coating process may result in pH decrease.

• Examples of conversion coatings include phosphating
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Q4. How to prepared 0.1 N H2so4 & Naoh ?
Ans. 
To prepare 0.1 N H2SO4 & NaOH, calculate the required amount of solute and dissolve it in distilled water.
• Calculate the molar mass of H2SO4 and NaOH

• Determine the required amount of solute using the formula: N = (W/M) x (1000/V)

• Dissolve the calculated amount of solute in distilled water to make 1 liter of solution

• Standardize the solution using a primary standard

• Use a burette to measure the volume of solution needed for
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Q5. How to cross verify 0.1 normality H2so4?
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To cross verify 0.1 normality H2SO4, use a standard solution of NaOH and an indicator.
• Prepare a standard solution of NaOH of known concentration.

• Add a few drops of an indicator such as phenolphthalein to the H2SO4 solution.

• Titrate the H2SO4 solution with the NaOH solution until the endpoint is reached.

• The endpoint is when the indicator changes color, indicating that all the H2SO4 has reacted with the NaOH.

• Calculate the...read more
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Q6. How to prepared ph buffer solution as per defined standard in tablet?
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Prepare a pH buffer solution as per defined standard in tablet.
• Determine the required pH value and buffer capacity

• Select the appropriate buffer system and calculate the required amounts of buffer components

• Dissolve the buffer components in water and adjust the pH as necessary

• Check the pH and adjust if necessary

• Filter the solution and store in a clean container

• Use a calibrated pH meter to verify the pH of the solution
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Q1. Basics manufacturing questions
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Q2. CNC working questions
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Q1. My interview experience is good
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Q2. 15 north gadra khedi
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Q3. Killa maidan road
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Q4. Indore pin code-452006
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Q5. Can Cummins keep old employee permanent
Ans. 
Cummins can keep old employees permanent based on performance and business needs.
• Cummins can consider keeping old employees permanent if they have a good performance record.

• The decision to keep old employees permanent may also depend on the business needs and budget constraints.

• Old employees may be offered permanent positions if they have valuable skills and experience that are beneficial to the company.

• Cummins may hav...read more
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Q1. Where are you living?
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Q2. Why are you leaving your last company?
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Q1. Circuit diagram of relay holding.
Ans. 
A relay holding circuit diagram is used to keep the relay in the energized state even after the control signal is removed.
• The circuit typically includes a holding contact that maintains the relay coil energized.

• A latching relay can also be used for holding without continuous power supply.

• Examples: ladder logic diagram with a holding contact, latching relay circuit diagram.
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Q2. What is PNP and NPN
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PNP and NPN are types of bipolar junction transistors commonly used in electronic circuits.
• PNP transistor has a layer of N-type semiconductor between two layers of P-type semiconductor, while NPN transistor has a layer of P-type semiconductor between two layers of N-type semiconductor.

• In a PNP transistor, current flows from the emitter to the base and then to the collector, while in an NPN transistor, current flows fro...read more
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Q3. How many type of sensor?
Ans. 
There are various types of sensors used for different purposes.
• Temperature sensors (e.g. thermocouples, thermistors)

• Pressure sensors (e.g. piezoelectric sensors)

• Motion sensors (e.g. accelerometers, gyroscopes)

• Proximity sensors (e.g. ultrasonic sensors)

• Light sensors (e.g. photodiodes, phototransistors)
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Q4. What is PLC and full form?
Ans. 
PLC stands for Programmable Logic Controller, which is a digital computer used for automation of electromechanical processes.
• PLC is used to control machinery in manufacturing processes, such as assembly lines, robotic devices, or any activity that requires high reliability control.

• It is programmed using a specialized computer language, typically ladder logic or function block diagram.

• PLCs are commonly used in industrie...read more
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Q1. Related to Environment Compliance
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Q2. Waste Management
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Q3. Water Positive organisation
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Q4. Net zero . Plastic netrality
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