Pick the correct statement regarding functions of a transducer
S1: Sense the magnitude, change in & / or frequency of same measurand
S2: To provide electrical output that furnishes accurate, quantitative data about the measurand

S1: In multimode fiber optics, intensity modulating schemes can be employed.
S2: Schemes using polarizing techniques need birefringent fiber.

Common mode rejection ratio is defined as ratio of

The transducers which requires an external power and their output is a measure of some variation such as resistance, inductance, capacitance etc., are called as

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