A basic hole is one whose
A. Lower deviation is zero
B. Upper deviation is zero
C. Lower and upper deviations are zero
D. None of these
Answer: Option A
Solution (By Examveda Team)
A basic hole is one whose Lower deviation is zero.Upper Deviation: It is the algebraic difference between the maximum size and the basic size. The upper deviation of a hole is represented by a symbol ES and of a shaft, it is represented by ES.
Lower Deviation: It is the algebraic difference between the minimum size and the basic size.
This Question Belongs to Mechanical Engineering >> Workshop Technology
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