WorksheetsQuiz on Sensors and Transducers
Total questions: 20
Worksheet time: 10mins
What is the primary function of a sensor?
To convert one form of energy to another
To detect changes in physical conditions
To store data for future use
To amplify electrical signals
Which of the following is an example of an active sensor?
Strain gauge
Optical sensor
Temperature sensor
Thermocouple
Which type of sensor must be in direct contact with the measured variable?
Non-contact sensor
Active sensor
Passive sensor
Contact sensor
Which of the following is a passive sensor?
Thermocouple
Photodiode
Strain gauge
Piezoelectric sensor
What is the primary function of a transducer?
To convert one form of energy to another
To amplify signals
To measure temperature
To sense pressure
What type of transducer generates an electrical output in the form of pulses?
Analog transducer
Digital transducer
Passive transducer
Active transducer
Which transduction principle involves a change in capacitance?
Photovoltaic transduction
Capacitive transduction
Electromagnetic transduction
Inductive transduction
What is the main advantage of using a potentiometer?
High accuracy
High sensitivity
Simple construction and operation
Requires no external power
Which of the following is an example of an inverse transducer?
Microphone
Photodiode
Thermocouple
Speaker
Which of the following is a characteristic of active transducers?
Convert electrical energy to mechanical energy
Produce output in pulses
Self-generating
Require external power
What does the sensitivity of a transducer refer to?
The range of temperatures it can measure
The ability to produce detectable output
The type of energy it converts
The size of the transducer
Which of the following is a type of resistive transducer?
Thermocouple
Strain gauge
Potentiometer
Photodiode
Which transducer is known as ‘self-generating transducer’?
(A) Active transducer
(B) Passive transducer
(C) Secondary transducer
(D) Analog transducer
LVDT Stands for?
Linear variable differential transducer
Linear variable differential transformer
Linear variation different transformer
None of the options mentioned
In a capacitive type pressure transducer Capacitance is
inversely proportional to area
directly proportional to distance between plates
inversely proportional to permittivity
inversely proportional to distance between plates
Piezoelectric transducer consists of _________
copper rod
aluminum wire
gold crystal
quartz crystal
What is the Hall Effect in semiconductors?
A current flow in a conductor due to a magnetic field
The resistance of a semiconductor material
The ability of a semiconductor to emit light
A voltage difference created across a conductor in the presence of a perpendicular magnetic field.
Explain the mathematical relationship between Hall voltage, magnetic field, and current in semiconductors.
VH=BIRH
VH=RH+BI
VH=IRHB
VH=RH B I
What is the inverse piezoelectric effect?
A material generates mechanical stress due to an electric charge.
A material generates heat due to an electric charge.
A material loses its electric charge due to mechanical stress.
A material generates light due to an electric charge.
What happens when an electric field is applied to a piezoelectric material (also known as the inverse piezoelectric effect)?
The material becomes magnetized
The material heats up
The material changes shape or size
The material emits light
