IT_IS_A_DEVICE_TO_CHANGE_A_SIGNAL_WHICH_IS_IN_ONE_PHYSICAL_FORM_TO_A_C – McqOptions

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1.	IT_IS_A_DEVICE_TO_CHANGE_A_SIGNAL_WHICH_IS_IN_ONE_PHYSICAL_FORM_TO_A_CORRESPONDING_SIGNAL_IN_ANOTHER_PHYSICAL_FORM.?$
A.	amplification
B.	transducer
C.	feed back
D.	none of the mentioned
Answer» C. feed back

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