Moiré fringes are used to measure rotary displacement along with ____ – McqOptions

MCQOPTIONS

1.	Moiré fringes are used to measure rotary displacement along with ________.
A.	contact type encoders only
B.	optical encoders only
C.	contact type encoders and optical encoders
D.	none of these
Answer» C. contact type encoders and optical encoders

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