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MAE 1351 Exam 3 Questions and Answers | Latest Update | 2024/2025 | 100% Pass
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MAE 1351 Exam 3 Questions and Answers | Latest Update | 2024/2025 | 100% Pass What is the primary function of a heat exchanger in thermal systems? A heat exchanger transfers thermal energy between two or more fluids without mixing them, facilitating efficient heating or cooling processes i...

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  • October 29, 2024
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  • 2024/2025
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MAE 1351 Exam 3 Questions and
Answers | Latest Update | 2024/2025 |
100% Pass

What is the primary function of a heat exchanger in thermal systems?


✔✔A heat exchanger transfers thermal energy between two or more fluids without mixing them,

facilitating efficient heating or cooling processes in various applications.




How does the principle of conservation of energy apply to mechanical systems?


✔✔The principle of conservation of energy states that energy cannot be created or destroyed,

only transformed; in mechanical systems, this means input energy must equal output energy

under ideal conditions.




What is the significance of understanding stress and strain in material science?


✔✔Understanding stress and strain helps engineers predict how materials will deform under

load, ensuring structures and components can withstand applied forces without failure.




What role do gears play in mechanical advantage?


✔✔Gears transmit torque and change rotational speed, providing mechanical advantage that

allows a smaller force to lift heavier loads or achieve higher speeds.

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, How does fluid pressure relate to fluid velocity in a pipe system?


✔✔According to Bernoulli’s principle, an increase in fluid velocity results in a decrease in fluid

pressure, illustrating the trade-off between speed and pressure in fluid dynamics.




What is the purpose of a governor in engine systems?


✔✔A governor regulates the speed of an engine by adjusting the fuel supply or throttle position

to maintain a desired output speed under varying load conditions.




How does thermal expansion affect the design of bridges?


✔✔Thermal expansion causes materials to expand or contract with temperature changes,

requiring engineers to incorporate expansion joints to accommodate movement and prevent

structural damage.




What factors influence the selection of bearing types in machinery?


✔✔Factors such as load capacity, speed, friction, and environmental conditions dictate the

choice of bearing type, impacting the performance and longevity of machinery.




How does the concept of resonance affect mechanical design?


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