Technician A says that outer tie rod ends should be replaced in pairs, even if only one is worn. Technician B says that inner tie rod ends should be replaced in pairs, even if only one is worn. Which technician is correct?

A. Technicain A only
B. Technician B only
C. Both A and B
D. Neither A nor B

C)Both A and B

Explanation:

It is best practice to replace the worn out tie rod with Pairs instead of a single tie rod.  It is not absolutely necessary, but many technicians insist on replacing both even if only one is worn out. This is because both have more or less the same load and sooner or later the other one is going to fail too. That's why technician A said that outer tie rod ends should be replaced in pairs, even if only one is worn. Technician B said that inner tie rod ends should be replaced in pairs, even if only one is worn. Both the technicians are correct

diagram is missing, but i will try to explain your doubt.

answer:

amplitude is the maximum displacement or distance moved on a point of a vibrating body or wave measured from its equilibrium position.it is equal to half the length of vibration path.