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In reciprocating engines primary forces _________.
- a)Are completely balanced
- b)Are partially balanced
- c)Are balanced by secondary forces
- d)Cannot be balanced
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
In reciprocating engines primary forces _________.a)Are completely ba...
In the case of reciprocating masses, Primary forces are partially balanced. Because in the reciprocating masses, "the resultant forces" will be completely balanced, but "the resultant couple" won't be balanced; that is why we call reciprocating masses only partially balanced.
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Since reciprocating mass cannot balance fully, partial balancing of the reciprocating mass is done while revolving masses can be balanced fully.
Primary unbalanced Force FP = mrω2cos2θ
Secondary unbalanced Force = FS = mrω2cos2θ/n
Effect of Partial Balancing of Reciprocating Parts
Reciprocating parts are only partially balanced. Due to this partial balancing of the reciprocating parts, there is an unbalanced primary force along the line of stroke and an unbalanced primary force perpendicular to the stroke line. The effect of an unbalanced primary force along the line of stroke is to produce;
- Variation in tractive force along the line of stroke
- Swaying couple
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In reciprocating engines primary forces _________.a)Are completely ba...
Balancing of Primary Forces in Reciprocating Engines
Primary forces are the forces that occur due to the reciprocating motion of the piston in the engine cylinder. These forces are caused by the pressure difference between the top and bottom of the piston, and they act perpendicular to the direction of the piston motion. The balancing of these forces is essential to minimize the vibration and noise in the engine. Here, we will discuss the balancing of primary forces in reciprocating engines.
Partially Balanced
The primary forces in reciprocating engines are partially balanced. This means that although some effort is made to reduce these forces, they cannot be completely eliminated. The reason for this is that the primary forces vary with the position of the piston in the cylinder. Therefore, it is impossible to balance them completely.
Balanced by Secondary Forces
To reduce the primary forces, the engine designers use a number of techniques. One of the most common methods is to use secondary forces to balance the primary forces. The secondary forces are generated by the motion of the engine parts such as the crankshaft, connecting rod, and flywheel. These parts are designed to move in such a way that they generate forces that cancel out the primary forces.
Crankshaft Design
The design of the crankshaft is critical to balancing the primary forces in the engine. The crankshaft is designed in such a way that it generates forces that counteract the primary forces. This is achieved by offsetting the crankshaft throws and spacing them at specific angles.
Connecting Rod Design
The connecting rod is another critical component in balancing the primary forces. The connecting rod is designed to have a specific length, and it is attached to the crankshaft at a specific angle. The length and angle of the connecting rod are designed to generate forces that balance out the primary forces.
Conclusion
In conclusion, primary forces in reciprocating engines are partially balanced by using secondary forces. The design of the crankshaft and connecting rod is critical to balancing these forces. Although the primary forces cannot be completely eliminated, their effects can be minimized by using proper design techniques.
Primary forces are the forces that occur due to the reciprocating motion of the piston in the engine cylinder. These forces are caused by the pressure difference between the top and bottom of the piston, and they act perpendicular to the direction of the piston motion. The balancing of these forces is essential to minimize the vibration and noise in the engine. Here, we will discuss the balancing of primary forces in reciprocating engines.
Partially Balanced
The primary forces in reciprocating engines are partially balanced. This means that although some effort is made to reduce these forces, they cannot be completely eliminated. The reason for this is that the primary forces vary with the position of the piston in the cylinder. Therefore, it is impossible to balance them completely.
Balanced by Secondary Forces
To reduce the primary forces, the engine designers use a number of techniques. One of the most common methods is to use secondary forces to balance the primary forces. The secondary forces are generated by the motion of the engine parts such as the crankshaft, connecting rod, and flywheel. These parts are designed to move in such a way that they generate forces that cancel out the primary forces.
Crankshaft Design
The design of the crankshaft is critical to balancing the primary forces in the engine. The crankshaft is designed in such a way that it generates forces that counteract the primary forces. This is achieved by offsetting the crankshaft throws and spacing them at specific angles.
Connecting Rod Design
The connecting rod is another critical component in balancing the primary forces. The connecting rod is designed to have a specific length, and it is attached to the crankshaft at a specific angle. The length and angle of the connecting rod are designed to generate forces that balance out the primary forces.
Conclusion
In conclusion, primary forces in reciprocating engines are partially balanced by using secondary forces. The design of the crankshaft and connecting rod is critical to balancing these forces. Although the primary forces cannot be completely eliminated, their effects can be minimized by using proper design techniques.
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In reciprocating engines primary forces _________.a)Are completely balancedb)Are partially balancedc)Are balanced by secondary forcesd)Cannot be balancedCorrect answer is option 'B'. Can you explain this answer?
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In reciprocating engines primary forces _________.a)Are completely balancedb)Are partially balancedc)Are balanced by secondary forcesd)Cannot be balancedCorrect answer is option 'B'. Can you explain this answer? for SSC 2024 is part of SSC preparation. The Question and answers have been prepared according to the SSC exam syllabus. Information about In reciprocating engines primary forces _________.a)Are completely balancedb)Are partially balancedc)Are balanced by secondary forcesd)Cannot be balancedCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for SSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In reciprocating engines primary forces _________.a)Are completely balancedb)Are partially balancedc)Are balanced by secondary forcesd)Cannot be balancedCorrect answer is option 'B'. Can you explain this answer?.
In reciprocating engines primary forces _________.a)Are completely balancedb)Are partially balancedc)Are balanced by secondary forcesd)Cannot be balancedCorrect answer is option 'B'. Can you explain this answer? for SSC 2024 is part of SSC preparation. The Question and answers have been prepared according to the SSC exam syllabus. Information about In reciprocating engines primary forces _________.a)Are completely balancedb)Are partially balancedc)Are balanced by secondary forcesd)Cannot be balancedCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for SSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In reciprocating engines primary forces _________.a)Are completely balancedb)Are partially balancedc)Are balanced by secondary forcesd)Cannot be balancedCorrect answer is option 'B'. Can you explain this answer?.
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