MMET 206 Exam #1 Questions and Answers | Latest Version | 2024/2025 | 100% Pass
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Course
MMET 206
Institution
MMET 206
MMET 206 Exam #1 Questions and
Answers | Latest Version | 2024/2025 |
100% Pass
What is the principle of conservation of energy in mechanical systems?
The principle of conservation of energy states that energy cannot be created or destroyed; it
can only be transformed from one form to anot...
MMET 206 Exam #1 Questions and
Answers | Latest Version | 2024/2025 |
100% Pass
What is the principle of conservation of energy in mechanical systems?
✔✔The principle of conservation of energy states that energy cannot be created or destroyed; it
can only be transformed from one form to another within a mechanical system.
How do you determine the center of gravity for an irregularly shaped object?
✔✔The center of gravity for an irregularly shaped object can be determined by balancing the
object on a point or using integration methods to calculate its centroid.
What is the difference between static and dynamic equilibrium?
✔✔Static equilibrium refers to a state where an object is at rest with no net forces acting upon it,
while dynamic equilibrium occurs when an object is moving at a constant velocity with balanced
forces.
What factors influence the choice of a lubricant in a mechanical system?
✔✔Factors include the operating temperature, load conditions, the type of motion involved, and
compatibility with the materials in contact.
1
,Define shear stress and its significance in material science.
✔✔Shear stress is the force per unit area acting parallel to the surface of a material, significant
for understanding how materials will deform under lateral forces.
What are the three main types of heat transfer?
✔✔The three main types of heat transfer are conduction, convection, and radiation, each playing
a role in thermal management within mechanical systems.
Explain how a gear train functions in a mechanical assembly.
✔✔A gear train transfers motion and torque between shafts, allowing for speed reduction or
increase depending on the gear ratios involved.
What is the role of a torque wrench in mechanical applications?
✔✔A torque wrench measures and applies a specific torque to fasteners, ensuring they are
tightened to the correct specification without damage.
How does vibration analysis contribute to equipment maintenance?
2
,✔✔Vibration analysis helps identify imbalances, misalignments, and wear in machinery,
allowing for proactive maintenance and reduced downtime.
What is the significance of dimensional analysis in engineering?
✔✔Dimensional analysis is used to check the consistency of equations, derive relationships
between physical quantities, and simplify complex problems by reducing them to their
fundamental dimensions.
What is a kinematic diagram, and how is it useful in mechanical design?
✔✔A kinematic diagram visually represents the motion of parts in a mechanism, aiding
engineers in understanding motion paths and interactions during design.
Describe the importance of conducting a load analysis in structural engineering.
✔✔Load analysis determines the forces acting on a structure, ensuring it can withstand
operational and environmental loads safely and effectively.
What is the difference between a hard and a soft material in engineering applications?
✔✔Hard materials resist deformation and wear, while soft materials are more ductile and
flexible, impacting their suitability for different applications and environments.
3
, Explain the concept of resonance and its potential impact on mechanical systems.
✔✔Resonance occurs when a system is driven at its natural frequency, potentially leading to
excessive vibrations and structural failure if not properly managed.
How can computer-aided design (CAD) improve the engineering design process?
✔✔CAD enhances the design process by providing precise modeling, facilitating modifications,
and allowing for virtual simulations, which improve accuracy and efficiency.
What is the significance of the mechanical advantage in machines?
✔✔Mechanical advantage measures how much a machine multiplies force, allowing users to lift
heavier loads with less input force.
Define tensile strength and its importance in material selection.
✔✔Tensile strength is the maximum amount of tensile (pulling) stress a material can withstand
before failure, critical for selecting materials in structural applications.
What is the role of a CAD system in mechanical engineering design?
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