What is / are the functions of sealing device used along with bearing – McqOptions

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1.	What is / are the functions of sealing device used along with bearings?
A.	To prevent leakage of oil from the bearing housing
B.	To prevent dust, water, dirt etc from entering the bearing housing
C.	Both (a) and (b)
D.	None of these
Answer» D. None of these

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