Transducer - MCQs with answers

Transducer - MCQs with answers

Q1. Function of transducer is to convert

A. Electrical signal into non electrical quantity
B. Non electrical quantity into electrical signal
C. Electrical signal into mechanical quantity
D. All of these

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Q2. Potentiometer transducers are used for the measurement of

A. Pressure
B. Displacement
C. Humidity
D. Both (a) and (b)

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Q3. Thermistor is a transducer. Its temperature coefficient is

A. Negative
B. Positive
C. Zero
D. None of these

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Q4. Strain gauge is a

A. Active device and converts mechanical displacement into a change of resistance

B. Passive device and converts electrical displacement into a change of resistance

C. Passive device and converts mechanical displacement into a change of resistance

D. Active device and converts electrical displacement into a change of resistance

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Q5. Constantan is used for measurement of dynamic strains. It is an alloy of

A. Copper and Aluminium
B. Nickel and molybdenum
C. Nickel and chromium
D. Copper and nickel

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Q6. The linear variable differential transformer transducer is

A. Inductive transducer
B. Non-inductive transducer
C. Capacitive transducer
D. Resistive transducer

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Q7. The transducer used for the measurements is/are

A. Resistance temperature detectors
B. Thermistors
C. Ultrasonic
D. All of these

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Q8. If at one end, the two wires made of different metals are joined together then a voltage will get produced between the two wires due to difference of temp between the two ends of wires. This effect is observed in

A. Thermocouples
B. Thermistors
C. RTD
D. Ultrasonics

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Q9. For the measurement of pressure the instruments used can be

A. Mechanical
B. Electro-mechanical
C. Electronic
D. All of these

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Q10. With the increase in the intensity of light, the resistance of a photovoltaic cell

A. Increases
B. Decreases
C. Remains same
D. None of these

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