Tata Cummins Diploma Trainee Engineer Interview Questions and Answers for Freshers

Q1. Related to subject some favourite subjector interviwer
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Q2. Two stroke & four stroke difference
Ans. 
Two stroke engines complete a power cycle in one revolution, while four stroke engines complete it in two revolutions.
• Two stroke engines have a simpler design and are lighter than four stroke engines.

• Four stroke engines are more fuel-efficient and produce less emissions than two stroke engines.

• Two stroke engines are commonly used in small power tools and motorcycles, while four stroke engines are used in cars and large...read more
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Q3. In which stroke air interned in combustion chamber
Ans. 
Air is interned in the combustion chamber during the intake stroke.
• During the intake stroke, the piston moves down and creates a vacuum that draws air into the combustion chamber.

• The air is mixed with fuel and ignited during the compression stroke.

• The resulting explosion pushes the piston down during the power stroke.

• Finally, the piston moves up during the exhaust stroke to expel the spent gases.

• This four-stroke cycle
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Basic knowledge of Subjects in diploma

Q1. Interviewer asked technical questions
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Q2. Difference between four stroke and two stroke engine
Ans. 
Four stroke engines have separate intake, compression, power, and exhaust strokes, while two stroke engines combine these strokes.
• Four stroke engines have a longer cycle and require more parts than two stroke engines.

• Four stroke engines are more fuel efficient and produce less pollution than two stroke engines.

• Two stroke engines are simpler in design and have a higher power-to-weight ratio than four stroke engines.

• Two ...read more
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Q1. Related to subject some favourite subjector interviwer
Add your answer
Q2. Two stroke & four stroke difference
Ans. 
Two stroke engines complete a power cycle in one revolution, while four stroke engines complete it in two revolutions.
• Two stroke engines have a simpler design and are lighter than four stroke engines.

• Four stroke engines are more fuel-efficient and produce less pollution than two stroke engines.

• Two stroke engines are commonly used in small power tools and motorcycles, while four stroke engines are used in cars and large...read more
Answered by AI
Add your answer
Q3. In which stroke air interned in combustion chamber
Ans. 
Air is interned in the combustion chamber during the intake stroke.
• During the intake stroke, the piston moves down and air is drawn into the combustion chamber.

• This air is then mixed with fuel and ignited during the compression stroke.

• The resulting explosion pushes the piston down, which drives the crankshaft and produces power.

• The exhaust stroke then expels the spent gases from the combustion chamber.

• This four-stroke ...read more
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Which Casting method in manufacturing process

Q1. Manufacturing processes
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Design, GD&T, Physics, Mathematics, CNC, QC.

Q1. Gear ratio of multiple transmissions
Ans. 
Gear ratio of multiple transmissions is the product of individual gear ratios.
• Gear ratio is the ratio of the number of teeth on the driven gear to the number of teeth on the driving gear.

• In multiple transmissions, the output of one transmission becomes the input of the next transmission.

• The gear ratio of multiple transmissions is the product of individual gear ratios.

• For example, if the first transmission has a gear ra...read more
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Q2. Reasons behind multiple gear ratios
Ans. 
Multiple gear ratios allow for efficient power transfer and improved performance in different driving conditions.
• Different gear ratios are needed for different driving conditions, such as acceleration, cruising, and climbing hills.

• Lower gear ratios provide more torque for acceleration and climbing hills, while higher gear ratios provide better fuel efficiency during cruising.

• Multiple gear ratios allow for a wider range...read more
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Q3. Thread designing and their strength
Ans. 
Thread designing involves determining the size, pitch, and shape of the thread to ensure proper strength and functionality.
• Thread size and pitch must be chosen based on the application and load requirements.

• Thread shape can affect the strength and ease of assembly.

• Thread strength can be increased through the use of materials with higher tensile strength.

• Thread engagement length should be sufficient to prevent stripping...read more
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Q4. Forging related knowledge
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Q5. Quality control systems
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