Consider the following types of damping:1. Air-friction damping2.Fluid – McqOptions

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1.	Consider the following types of damping:1. Air-friction damping2.Fluid-friction damping3.Eddy-current dampingPMMC type instruments use which of the above?
A.	1 only
B.	2 only
C.	3 only
D.	1,2 and 3
Answer» D. 1,2 and 3

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