Daimler Truck Mechanical Engg. Design Interview Questions and Answers

Q1. What is the capacity of diesel and petrol
Ans. 
Diesel has higher energy density than petrol, resulting in better fuel efficiency.
• Diesel has a higher energy density than petrol, meaning it can provide more energy per unit volume.

• Petrol is more volatile and burns faster than diesel.

• The capacity of diesel and petrol tanks in vehicles can vary depending on the size of the vehicle and its fuel efficiency.

• For example, a typical car may have a petrol tank capacity of arou...read more
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Q2. Difference b/w petrol engine & diesel engine
Ans. 
Petrol engines use spark ignition, while diesel engines use compression ignition.
• Petrol engines use a spark plug to ignite the fuel-air mixture, while diesel engines rely on compression to ignite the fuel.

• Petrol engines are lighter and more responsive, while diesel engines are more fuel-efficient and have higher torque.

• Petrol engines are more common in cars and motorcycles, while diesel engines are often used in trucks
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Q3. What is meant by LNTD
Ans. 
LNTD stands for Logarithmic Mean Temperature Difference.
• LNTD is a term used in heat transfer calculations to determine the overall temperature difference between two fluids in a heat exchanger.

• It is calculated using the formula LNTD = (ΔT1 - ΔT2) / ln(ΔT1 / ΔT2), where ΔT1 and ΔT2 are the temperature differences at the two ends of the heat exchanger.

• LNTD is important in designing efficient heat exchangers to maximize h...read more
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Q1. Any books but ic engine
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Q2. Like Newton's 1st 2nd 3rd low
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Q3. Technical questions
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Q1. Obd full form in vehicle
Ans. 
On-Board Diagnostics
• On-Board Diagnostics (OBD) is a system in vehicles that monitors the performance of the engine and emissions systems.

• It helps to identify issues and malfunctions by providing codes that can be read with a diagnostic tool.

• OBD systems have evolved over the years, with OBD-II being the current standard in most vehicles.

• Examples of OBD codes include P0300 for random misfire and P0420 for catalytic conve
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Q1. Mechanical engineering Quality assurance
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Q2. Which type of ic engine
Ans. 
Internal combustion engines are classified into two main types: spark ignition (SI) engines and compression ignition (CI) engines.
• Spark ignition (SI) engines use a spark plug to ignite the fuel-air mixture, commonly found in gasoline engines.

• Compression ignition (CI) engines rely on the heat generated by compressing the air in the cylinder to ignite the fuel, commonly found in diesel engines.

• Each type of engine has its...read more
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Q3. Instrumental calibration
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Q4. How do you use instrument
Ans. 
Instruments are used in various ways in mechanical engineering, such as for measuring, testing, and analyzing different parameters.
• Instruments are used for measuring various parameters like temperature, pressure, flow rate, etc.

• Instruments are used for testing the performance of mechanical systems and components.

• Instruments are used for analyzing data and making informed decisions based on the results.

• Examples include ...read more
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Q5. What about a quality control
Ans. 
Quality control is essential in ensuring products meet standards and specifications.
• Quality control involves monitoring and testing products to ensure they meet specified standards.

• It helps identify defects or issues early in the production process.

• Quality control can involve inspections, testing, and audits to ensure consistency and reliability.

• Examples include checking dimensions of a part, testing the strength of a
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Q1. Past working experience
Ans. 
I have over 10 years of experience working as a Senior Mechanical Engineer in various industries.
• Managed and led a team of engineers in designing and implementing mechanical systems

• Developed and optimized mechanical components for improved performance

• Collaborated with cross-functional teams to ensure project success

• Performed analysis and testing to validate designs and troubleshoot issues
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Q2. Education details
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Q1. YLM Bending program
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Q2. Man Machine chare preparation
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Q1. Mentinance and assembly
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Q2. Mechanical work of company
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Q1. Mentinance and assembly uses
Ans. 
Maintenance and assembly are crucial for ensuring equipment reliability and optimal performance.
• Maintenance involves regular inspections, cleaning, lubrication, and replacement of worn-out parts to prevent breakdowns and extend equipment lifespan.

• Assembly involves putting together components to create a functional system or machine.

• Both maintenance and assembly require technical knowledge, attention to detail, and adhe...read more
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Q1. 7qc tool 5s PFMA Red bin analysis
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