Tata Cummins Quality Assurance/Quality Control Manager Interview Questions and Answers

Q1. What is gear working
Ans. 
Gear working refers to the process of gears transmitting motion and power between two rotating shafts.
• Gears have teeth that mesh together to transfer motion and power.

• The size and shape of the gears determine the speed and direction of rotation.

• Gears can be used to increase or decrease speed, change direction, or transfer power between shafts.

• Common examples of gear working include in vehicles (transmission gears) and
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Q2. What is 4 stock engine and 2 stock engine
Ans. 
4 stroke engine completes four separate strokes to generate power, while 2 stroke engine completes two strokes.
• 4 stroke engine has separate intake, compression, power, and exhaust strokes

• 2 stroke engine combines intake/compression and power/exhaust strokes

• Examples: Most cars use 4 stroke engines, while some motorcycles use 2 stroke engines
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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
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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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Which Casting method in manufacturing process

Q1. Manufacturing processes
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