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The frequency of primary and secondary forces in reciprocating masses conform to the ratio
- a)2 : 1
- b)1 : 1
- c)1 : 2
- d)1 : 4
Correct answer is option 'C'. Can you explain this answer?
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The frequency of primary and secondary forces in reciprocating masses ...
Secondary force has twice the frequency of primary force is generally neglected at low speeds. Secondary force has twice the frequency of primary force is generally neglected at low speeds.
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The frequency of primary and secondary forces in reciprocating masses ...
Ratio of Primary and Secondary Forces in Reciprocating Masses
Primary and secondary forces are the forces that are generated due to the reciprocating motion of masses. The primary force is the force generated in the direction of motion of the piston, while the secondary force is the force generated perpendicular to the direction of motion of the piston. The ratio of primary and secondary forces in reciprocating masses is given by:
Ratio = 1 : 2
Explanation
The primary force is generated due to the inertia of the reciprocating masses, which causes them to resist any change in their state of motion. This force is directly proportional to the acceleration of the reciprocating masses, and it is maximum when the piston is at the top or bottom dead center of the cylinder.
The secondary force is generated due to the variation in the angular velocity of the connecting rod as it moves through its cycle. This force is maximum when the piston is at mid-stroke, and it is perpendicular to the direction of motion of the piston.
As the reciprocating masses move through their cycle, the ratio of primary to secondary forces changes. However, on average, the ratio is approximately 1:2. This means that the secondary force is approximately twice as large as the primary force.
Importance
The ratio of primary to secondary forces is an important consideration in the design and operation of reciprocating machinery, such as internal combustion engines and compressors. The forces generated can cause vibration, noise, and wear, which can affect the performance and longevity of the machinery. By understanding the ratio of primary to secondary forces, engineers can design machines that are more efficient and reliable.
Primary and secondary forces are the forces that are generated due to the reciprocating motion of masses. The primary force is the force generated in the direction of motion of the piston, while the secondary force is the force generated perpendicular to the direction of motion of the piston. The ratio of primary and secondary forces in reciprocating masses is given by:
Ratio = 1 : 2
Explanation
The primary force is generated due to the inertia of the reciprocating masses, which causes them to resist any change in their state of motion. This force is directly proportional to the acceleration of the reciprocating masses, and it is maximum when the piston is at the top or bottom dead center of the cylinder.
The secondary force is generated due to the variation in the angular velocity of the connecting rod as it moves through its cycle. This force is maximum when the piston is at mid-stroke, and it is perpendicular to the direction of motion of the piston.
As the reciprocating masses move through their cycle, the ratio of primary to secondary forces changes. However, on average, the ratio is approximately 1:2. This means that the secondary force is approximately twice as large as the primary force.
Importance
The ratio of primary to secondary forces is an important consideration in the design and operation of reciprocating machinery, such as internal combustion engines and compressors. The forces generated can cause vibration, noise, and wear, which can affect the performance and longevity of the machinery. By understanding the ratio of primary to secondary forces, engineers can design machines that are more efficient and reliable.
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The frequency of primary and secondary forces in reciprocating masses conform to the ratioa)2 : 1b)1 : 1c)1 : 2d)1 : 4Correct answer is option 'C'. Can you explain this answer?
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