HLS Asia Interview Questions, Process, and Tips

Q1. What is the efficiency of I.C. engine.
Ans. 
The efficiency of an I.C. engine can vary depending on factors such as design, fuel type, and operating conditions.
• Efficiency of I.C. engines typically ranges from 20% to 40%, with some high-performance engines reaching up to 50%.

• Factors affecting efficiency include compression ratio, combustion process, and heat transfer losses.

• Improvements in engine design, such as turbocharging and direct injection, can increase eff...read more
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Family relations quiz just like asked in competitive exams

Q1. Can we run diesel engine with petrol, why and why not?!
Ans. 
No, diesel engines are designed to run on diesel fuel, not petrol.
• Diesel engines require diesel fuel for proper combustion

• Petrol has different combustion properties compared to diesel

• Running a diesel engine on petrol can cause damage to the engine components

• The engine may not run efficiently or may not run at all
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There was a test on google form including core questions and Aptitude questions.

Q1. The Interview was purely technical. started with a brief intro and covered IC Engine, Project, Intern based questions as I was having intern at Power Plant so related questions.
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Q2. Explain the 4 Strokes of IC Engine. The function of Spark Plug and Voltage supply to spark plug.
Ans. 
IC engine has 4 strokes: intake, compression, power, and exhaust. Spark plug ignites fuel-air mixture. Voltage supply ensures spark plug works.
• Intake stroke: fuel-air mixture enters the cylinder

• Compression stroke: mixture is compressed by the piston

• Power stroke: spark plug ignites mixture, causing an explosion that pushes the piston down

• Exhaust stroke: piston pushes exhaust gases out of the cylinder

• Spark plug creates a...read more
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Q1. 2nd interview was also purely technical. this round was based on practical knowledge about Vehicles, functioning, and RAC. Tricky questions were asked.
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Q1. Tell me about your self like what i am doing, what i done, family, where from i am
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Q2. Difference b/w petrol engine and diesel engine..?
Ans. 
Petrol engines use spark ignition, while diesel engines use compression ignition.
• Petrol engines use spark plugs to ignite the fuel-air mixture, while diesel engines rely on compression to ignite the fuel.

• Petrol engines typically have higher RPM (revolutions per minute) compared to diesel engines.

• Diesel engines are more fuel-efficient than petrol engines.

• Petrol engines are generally quieter and smoother in operation com...read more
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Q3. Which engine is more powerful..?
Ans. 
It depends on the specific engines being compared.
• Engine power can vary greatly depending on factors such as size, design, and technology.

• For example, a high-performance sports car engine may be more powerful than a small economy car engine.

• Comparing specific engines would be necessary to determine which is more powerful.
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Q4. Which engine needs mor maintenance..?
Ans. 
Diesel engines generally require more maintenance than gasoline engines.
• Diesel engines have more complex systems and components that require regular maintenance.

• Diesel engines require more frequent oil changes and fuel filter replacements.

• Diesel engines may require additional maintenance for emissions control systems.

• Gasoline engines generally have simpler maintenance requirements.
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Q1. They gave task list there is 15 to 20 question you have to do you can ask you Senior for help.
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Noramal aptitude and maths questions

Q1. On that round i have submit my asignment which is given me in visit they gave me a task list
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Psychometry Test, aptitude, reasoning, mechanical engineering mcqs

Q1. Tell me something about yourself Questions on IC Engine, Strength of Materials and Theory of machines
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