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Which of the following are examples of forced closed kinematic pairs?
1. Cam and roller mechanism
2. Door closing mechanism
3. Slider-crank mechanism
4. Automotive clutch operating mechanism
2. Door closing mechanism
3. Slider-crank mechanism
4. Automotive clutch operating mechanism
Select the correct answer using the codes given below:
[IES-2003]
- a)1, 2 and 4
- b)1 and 3
- c)2, 3 and 4
- d)1, 2, 3 and 4
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
Which of the following are examples of forced closed kinematic pairs?1...
Forced closed kinematic pairs – If the contact between the two pairs is maintained by application of force.
Door closing mechanism : It forces the door to be closed when opened.
Most Upvoted Answer
Which of the following are examples of forced closed kinematic pairs?1...
Forced closed kinematic pairs:
Forced closed kinematic pairs refer to mechanisms where the relative motion between the two elements is constrained or forced. In these pairs, one element is the driver and the other is the follower. The motion of the follower is completely determined by the motion of the driver.
Examples:
1. Cam and roller mechanism: In this mechanism, the cam is the driver and the roller is the follower. The shape of the cam determines the motion of the roller. As the cam rotates, it forces the roller to move in a specific way. This mechanism is commonly used in engines, where the camshaft controls the opening and closing of valves.
2. Door closing mechanism: In a door closing mechanism, the door closer acts as the driver and the door acts as the follower. The door closer is designed to provide a controlled closing motion to the door. As the door closer mechanism is activated, it forces the door to close in a controlled manner.
3. Slider-crank mechanism: In a slider-crank mechanism, the crank is the driver and the slider is the follower. As the crank rotates, it forces the slider to move back and forth. This mechanism is commonly used in engines, where the crankshaft converts the linear motion of the pistons into rotary motion.
4. Automotive clutch operating mechanism: In an automotive clutch operating mechanism, the clutch pedal is the driver and the clutch plate is the follower. When the clutch pedal is pressed, it forces the clutch plate to engage or disengage, depending on the desired motion. This mechanism is used in vehicles to control the power transmission from the engine to the wheels.
Conclusion:
Based on the given examples, the forced closed kinematic pairs are:
- Cam and roller mechanism
- Door closing mechanism
- Automotive clutch operating mechanism
Therefore, the correct answer is option 'A' - 1, 2, and 4.
Forced closed kinematic pairs refer to mechanisms where the relative motion between the two elements is constrained or forced. In these pairs, one element is the driver and the other is the follower. The motion of the follower is completely determined by the motion of the driver.
Examples:
1. Cam and roller mechanism: In this mechanism, the cam is the driver and the roller is the follower. The shape of the cam determines the motion of the roller. As the cam rotates, it forces the roller to move in a specific way. This mechanism is commonly used in engines, where the camshaft controls the opening and closing of valves.
2. Door closing mechanism: In a door closing mechanism, the door closer acts as the driver and the door acts as the follower. The door closer is designed to provide a controlled closing motion to the door. As the door closer mechanism is activated, it forces the door to close in a controlled manner.
3. Slider-crank mechanism: In a slider-crank mechanism, the crank is the driver and the slider is the follower. As the crank rotates, it forces the slider to move back and forth. This mechanism is commonly used in engines, where the crankshaft converts the linear motion of the pistons into rotary motion.
4. Automotive clutch operating mechanism: In an automotive clutch operating mechanism, the clutch pedal is the driver and the clutch plate is the follower. When the clutch pedal is pressed, it forces the clutch plate to engage or disengage, depending on the desired motion. This mechanism is used in vehicles to control the power transmission from the engine to the wheels.
Conclusion:
Based on the given examples, the forced closed kinematic pairs are:
- Cam and roller mechanism
- Door closing mechanism
- Automotive clutch operating mechanism
Therefore, the correct answer is option 'A' - 1, 2, and 4.
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