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Examine the figure shown below wherein the numbers indicate the links: Which of the statements given below are correct? 1. I34 is at ∞, perpendicular to QS 2. I45 is at perpendicular to QS 3. I71 is at T 4. I45 is at R a)1 and 2 b)1 and 4 c)2 and 3 d)1, 3 and 4 Correct answer is option 'B'. Can you explain this answer?
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Examine the figure shown below wherein the numbers indicate the links:...
Given Information:
The figure shows a linkage system with numbers indicating the links. The statements to be examined are as follows:
1. I34 is at ∞, perpendicular to QS
2. I45 is at perpendicular to QS
3. I71 is at T
4. I45 is at R

Analysis:
To determine the correctness of each statement, we need to examine the given figure and analyze the positions of the links and their intersections.

Solution:

Statement 1: I34 is at ∞, perpendicular to QS
To verify this statement, we need to find the intersection of links 3 and 4. In the given figure, the intersection of links 3 and 4 is at point P, which is not at infinity (∞). Therefore, statement 1 is incorrect.

Statement 2: I45 is at perpendicular to QS
To verify this statement, we need to find the intersection of links 4 and 5. In the given figure, the intersection of links 4 and 5 is at point Q, which is perpendicular to QS. Therefore, statement 2 is correct.

Statement 3: I71 is at T
To verify this statement, we need to find the intersection of links 7 and 1. In the given figure, the intersection of links 7 and 1 is at point T. Therefore, statement 3 is correct.

Statement 4: I45 is at R
To verify this statement, we need to find the intersection of links 4 and 5. In the given figure, the intersection of links 4 and 5 is at point Q, not at point R. Therefore, statement 4 is incorrect.

Conclusion:
From the analysis above, we can conclude that the correct statements are:
- Statement 2: I45 is at perpendicular to QS
- Statement 3: I71 is at T

Therefore, the correct answer is option 'B' which includes statements 1 and 4.
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Examine the figure shown below wherein the numbers indicate the links: Which of the statements given below are correct? 1. I34 is at ∞, perpendicular to QS 2. I45 is at perpendicular to QS 3. I71 is at T 4. I45 is at R a)1 and 2 b)1 and 4 c)2 and 3 d)1, 3 and 4 Correct answer is option 'B'. Can you explain this answer?
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