Cummins Diploma Mechanical Engineer Interview Questions and Answers

Q1. What is the work in ingine
Ans. 
The work in engineering involves designing, analyzing, and improving mechanical systems and processes.
• Designing and creating blueprints for machines, equipment, or structures

• Analyzing and testing prototypes to ensure they meet specifications

• Improving existing mechanical systems to enhance performance and efficiency

• Collaborating with other engineers and professionals to solve technical problems

• Using computer-aided desig...read more
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Q2. What is work in piston
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Work in piston refers to the force exerted by the expanding gases on the piston during the power stroke.
• During the power stroke, fuel is ignited in the combustion chamber, which creates a high-pressure gas that pushes the piston down.

• The force exerted by the expanding gases on the piston is what produces the work output of the engine.

• The work done by the piston is transferred to the crankshaft, which converts the linea...read more
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Q3. Types of gear is working
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Types of gears include spur gears, helical gears, bevel gears, worm gears, and rack and pinion gears.
• Spur gears have straight teeth and are used to transmit motion between parallel shafts.

• Helical gears have angled teeth and provide smoother and quieter operation compared to spur gears.

• Bevel gears have cone-shaped teeth and are used to transmit motion between intersecting shafts.

• Worm gears consist of a worm and a worm w...read more
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Q4. Which 2 stroke and 4 stroke engine
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Two-stroke engines have a power stroke every revolution, while four-stroke engines have a power stroke every other revolution.
• Two-stroke engines have a simpler design and are lighter than four-stroke engines.

• Two-stroke engines are commonly used in small power tools, motorcycles, and boats.

• Four-stroke engines are more fuel-efficient and have a longer lifespan than two-stroke engines.

• Four-stroke engines are commonly used
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Q5. What is working for propeller shaft
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Propeller shaft transmits power from engine to the wheels of a vehicle.
• It connects the transmission to the rear axle.

• It rotates at high speeds and needs to be balanced.

• It may have universal joints to allow for suspension movement.

• It may have a slip joint to allow for changes in length due to suspension movement.

• It may be made of steel or aluminum depending on the application.
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Q1. Self introduce family background or company releted question
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Q2. Why do you want this job?
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Q3. What is your skill or hobbies ?
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Q1. What is difference between Petrol engine and 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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