A transducer is defined as a device that converts physical quantities (like pressure or temperature) into electrical signals.
Question 2 of 10
Which type of transducer is known as a self-generating transducer?
Active transducers are called self-generating because they do not require an external power source to produce an electrical output.
Question 3 of 10
Which of the following is an example of an active transducer?
A thermocouple generates a voltage directly from heat, making it an active transducer.
Question 4 of 10
Passive transducers require which of the following to function?
Passive transducers convert physical changes into electrical parameters (R, L, or C) and require an external source to produce a measurable voltage or current.
Question 5 of 10
What happens to the output of a passive transducer if the external power source is removed?
Since passive transducers change electrical parameters (like resistance), they need an external voltage or current to manifest those changes as a usable signal.
Question 6 of 10
Which transducer principle involves varying the gap between plates to change a parameter?
Capacitive transducers change capacitance based on physical factors like the distance between plates or dielectric properties.
Question 7 of 10
Compared to passive transducers, active transducers generally have:
Active transducers typically have lower resolution compared to passive transducers, which benefit from external power to detect very small changes.
Question 8 of 10
A thermistor is an example of which type of transducer?
A thermistor is a resistive transducer; its resistance varies with temperature, and it requires an external circuit to measure that change.
Question 9 of 10
How does a piezoelectric crystal function as a transducer?
Piezoelectric crystals convert mechanical pressure directly into an electrical voltage signal, making them active transducers.
Question 10 of 10
Which parameter describes the passive transducer output type?
Passive transducers convert inputs into changes in passive electrical parameters like resistance, inductance, or capacitance.