What is the primary mechanical function of a structural link________________?
Show answer Hide answer
Answer: D. all of the above
Explanation
Structural links act as rigid bodies that transmit forces throughout a machine assembly. Links also maintain correct relative distances and guide other moving components along paths. Therefore, structural links perform all of these mechanical support and motion functions. A machine link or kinematic element must be a resistant body resisting deformation. Links connect joints together to form functional kinematic chains and mechanisms. Rigidity ensures predictable force transmission without bending or flexibility interference.
Machine tool frames and engine crankcases serve as structural links supporting moving parts. Structural analysis ensures machine frames can handle operational loads without failure. Proper link design is vital for maintaining alignment in precision manufacturing equipment. Stating links only transmit motion ignores their vital role in structural support and guidance. Guiding other links is only one aspect of a link's overall mechanical responsibility. Stating none of the above is wrong because all listed functions are performed by links.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
Related questions
Q1. What motion is produced by an elliptical trammel mechanism_________________?
Show answer Hide answer
Answer: C. two pairs turning and two pairs sliding
An elliptical trammel mechanism consists of two turning pairs and two sliding pairs connected in a frame. The sliding blocks move inside perpendicular grooves while the bar pivots on turning pin joints. This specific com...
Q2. What design parameters determine the pressure angle of a cam mechanism___________________?
Show answer Hide answer
Answer: E. all of the above
Pressure angle depends directly on follower lift, base circle dimensions, and cam offset geometry. Changing the ascent angle alters the steepness of the cam profile, affecting the pressure angle. All listed design parame...
Q3. What is the recommended maximum limit for the pressure angle in cam design________________?
Show answer Hide answer
Answer: D. 30°
The recommended maximum limit for the pressure angle in cam design is thirty degrees. Exceeding this thirty-degree limit causes excessive side thrust and follower binding in guides. Maintaining a lower pressure angle ens...
Q4. What type of shaft coupling is used when two intersecting axes are neither collinear nor parallel______________________?
Show answer Hide answer
Answer: B. universal coupling
A universal coupling is specifically designed to connect two intersecting shafts whose axes are neither collinear nor parallel. This mechanical joint uses yokes and a central cross to transmit rotational torque at an ang...
Q5. What is a body's inherent resistance to any change in its state of rest or uniform motion called_______________?
Show answer Hide answer
Answer: C. inertia
Inertia is defined as the natural tendency of an object to resist changes in its velocity. Mass serves as the quantitative measure of this inherent resistance in translational motion. An external force is required to ove...
Q6. What transmission device is used between non-parallel, non-intersecting rotating shafts__________________?
Show answer Hide answer
Answer: D. worm gear
Worm gears are used for transmitting power between non-parallel, non-intersecting rotating shafts. The worm features a screw-like thread that meshes with a mating worm wheel gear. This configuration allows high gear redu...