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Consider the following statements:

         Artefacts to prevent harmful effects resulting from vibrations of and unbalanced machine fixed on its foundation include

1. mounting the machine on springs thereby minimizing the transmission of forces

2. using vibration isolating materials to prevent or reduce the transmission of forces

3.   moving the foundation so as to have only once degree of freedom towards reducing the transmission of forces                                              

         Which of the above statements are correct?

         (a) 1 and 2 only              (b) 1 and 3 only

         (c) 2 and 3 only              (d) 1, 2 and 3 only

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