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Which of the following thermodynamic cycles has the highest theoretical efficiency for a heat engine operating between two temperatures?

• Carnot Cycle
• Otto Cycle
• Diesel Cycle
• Rankine Cycle

In a Newtonian fluid, which of the following statements is true?

• Shear stress is independent of the rate of strain.
• The viscosity changes with temperature and pressure.
• Shear stress is directly proportional to the rate of shear strain.
• The fluid has a constant density regardless of pressure.

The primary function of a flywheel in a mechanical system is to:

• Increase the speed of the system.
• Store rotational energy.
• Provide damping to vibrations.
• Reduce friction in bearings.

What is the primary reason for the use of a torsion bar in a suspension system?

• To provide a smoother ride.
• To minimize weight.
• To resist twisting forces.
• To enhance steering control.

In a heat exchanger, the overall heat transfer coefficient (U) is a function of:

• The area of heat transfer only.
• The temperature difference only.
• The properties of the fluids and the design of the exchanger.
• The flow rate of the fluids only.

What is the purpose of a differential gear in an automobile?

• To provide power to the wheels.
• To allow the wheels to rotate at different speeds during a turn.
• To reduce engine noise.
• To increase fuel efficiency.

Which of the following materials is typically used for making gears due to its high wear resistance and toughness?

• Aluminum
• Cast Iron
• Polyethylene
• Brass

Which of the following manufacturing processes is primarily used for shaping materials through the application of force?

• Casting
• Machining
• Forming
• Joining

What is the primary purpose of a Computer Numerical Control (CNC) machine?

• To reduce material costs
• To automate the production process
• To increase manual labor
• To simplify assembly

In the context of lean manufacturing, what does the term "Kaizen" refer to?

• Automation of production
• Continuous improvement
• Inventory management
• Quality control