Multiple Choice questions on sensors and transducers pdf

 Multiple Choice questions on sensors and transducers Online test and pdf set

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1.

How the increase in temperature affects the resistance value of the positive temperature coefficient (PTC) component?

A : Resistance value decreases

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B : Resistance value increases

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C : Resistance value remains the same

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D : Resistance value becomes infinity

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2.

What is the use of resistance hygrometer?

A : To measure light intensity

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B : To measure humidity

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C : To measure temperature

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D : To measure pressure

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3.

What is the application of strain gauge?

A : Temperature measurement

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B : Pressure and displacement

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C : Radiation measurement

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D : Compression and tension measurement

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4.

What is the application of LVDT?

A : To reduce temperature

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B : To measure displacement

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C : To measure residual stress

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D : To measure speed

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5.

Which is functioning as the active type transducer?

A : Thermocouple

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B : Potentiometer

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C : Dielectric gauge

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D : Variable capacitance pressure gauge

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6.

Which working principle is used in the proximity sensor?

A : High voltage source

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B : Low temperature source

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C : Low frequency signal

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D : Electromagnetic field

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7.

What is the application of thermistor in sensing circuit?

A : To measure displacement

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B : To measure pressure

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C : To measure temperature

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D : To measure light intensity

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8.

Which signal is used by the passive transducer to produce output signal?

A : Magnetic signal

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B : Excitation signal

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C : Self-generating signal

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D : Light radiation signal

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9.

Which type of sensor gives quick and precise measurements?

A : Load cell

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B : Electrical strain gauge

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C : Mechanical strain gauge

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D : Hydraulic strain gauge

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10.

Which type of strain gauge is the most sensitive and reliable?

A : Hydraulic

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B : Mechanical

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C : Piezoelectric

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D : Electrical resistance

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11.

What is the function of resistance strain gauge?

A : Measurement of power

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B : Measurement of torque

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C : Measurement of voltage

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D : Measurement of ampere

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12.

What is the use of load cell?

A : Converts force into linear movement

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B : Converts force into optical light rays

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C : Converts force into mechanical vibration

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D : Converts force into electrical signal

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13.

What is the name of device used to convert a physical quantity into its corresponding electrical signal?

A : Amplifier

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B : Transducer

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C : Oscillator

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D : Modulator

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14.

What is the full form of the abbreviation RTD used as a sensor?

A : Remote Transistor Detector

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B : Repulsion Type Detector

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C : Reluctance Transmitter Detector

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D : Resistance Temperature Detector

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15.

hich sensor detect the presence of objects without any physical contact?

A : LVDT

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B : Load cell

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C : Strain gauge

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D : Proximity sensor

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