Transducers MCQs

Practice Transducers MCQs with four options, answers and explanations for focused Electronics & Telecommunication Engineering revision.

Question 1

Measurements & InstrumentationTransducers

A transducer converts?

AA physical quantity from one form into a corresponding usable signal
BAC power directly into mechanical work only
COnly digital data into text
DOnly resistance into heat

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Correct Answer: A. A physical quantity from one form into a corresponding usable signal

Explanation: In instrumentation, a transducer converts a measurand into another form, commonly an electrical signal suitable for measurement or processing.

Reference: Standard measurements and instrumentation: transducers

Question 2

Measurements & InstrumentationTransducers

A piezoelectric transducer is particularly suitable for measurement of?

ADynamic force, pressure or vibration
BTrue static displacement over indefinitely long periods
CDC resistance only
DHumidity only

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Correct Answer: A. Dynamic force, pressure or vibration

Explanation: Piezoelectric sensors generate charge under mechanical stress and are especially suited to dynamic measurements; charge leakage limits true static measurement.

Reference: Standard measurements and instrumentation: transducers

Question 3

Measurements & InstrumentationTransducers

A Hall-effect sensor is commonly used to sense?

AMagnetic field
BHumidity only
CAcoustic pressure only
DChemical pH only

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Correct Answer: A. Magnetic field

Explanation: The Hall effect produces a transverse voltage in a current-carrying material subjected to a magnetic field.

Reference: Standard measurements and instrumentation: transducers

Question 4

Measurements & InstrumentationTransducers

A capacitive transducer can measure displacement by converting motion into a change in?

ACapacitance
BOnly resistance
COnly frequency independent of circuitry
DMagnetic flux only

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Correct Answer: A. Capacitance

Explanation: Displacement can change plate area, separation or dielectric properties, thereby changing capacitance.

Reference: Standard measurements and instrumentation: transducers

Question 5

Measurements & InstrumentationTransducers

An inductive proximity sensor is commonly used for detecting?

AMetallic objects
BOnly transparent liquids
COnly temperature
DOnly light intensity

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Correct Answer: A. Metallic objects

Explanation: Inductive proximity sensors generate electromagnetic fields and detect changes caused primarily by nearby conductive metallic targets.

Reference: Standard measurements and instrumentation: transducers