Top 50+ Solved Optical, Pressure and Temperature Sensors MCQ Questions Answer
Q. In which of the following categories be thin plate diaphragm included?
a. Primary transducer
b. Secondary transducer
c. Voltage measuring devices
d. Spring balance systems
Q. Which of the following applications are suited for thin plate diaphragms?
a. Static pressure only
b. Dynamic pressure only
c. Both static and dynamic pressure with large frequency
d. Both static and dynamic pressure with small frequency
Q. Which of the following devices convert pressure to displacement?
a. Diaphragm
b. Bellow
c. Capsule
d. Both diaphragm and capsule
Q. Resistance temperature detector is ___________
a. a electrical tranducer
b. a mechanical transducer
c. a chemical transducer
d. a physical transducer
Q. Sensing element in the thermometer must provide ________
a. small change in resistance
b. no change in resistance
c. large change in resistance
d. infinite change in resistance
Q. Resistive transducers are ______________
a. Primary transducers
b. Secondary transducers
c. Either primary or secondary
d. None of the mentioned
Q. Which of the following is correct for thermistors?
a. Positive temperature coefficient of resistance
b. Negative temperature coefficient of resistance
c. Unpredictable temperature coefficient
d. None of the mentioned
Q. Thermocouple is a ______________
a. Primary device
b. Secondary transducer
c. Tertiary transducer
d. None of the mentioned
Q. Operation of thermocouple is governed by _______________
a. Peltier effect
b. Seebeck effect
c. Thomson effect
d. All of the mentioned
Q. ______________ describes current flow between two junctions formed by twodifferent metals.
a. Peltier effect
b. Thomson effect
c. Seebeck effect
d. None of the mentioned
Q. Amount of heat liberated or absorbed when 1A current passes is called____________
a. Thomson coefficient
b. Peltier coefficient
c. Seebeck coefficient
d. None of the mentioned
Q. Thermo couple cannot be used to measure ____________
a. Temperature of gas
b. Temperature of liquid
c. IR radiation
d. None of the mentioned
Q. Photoconductive transducers produce output ________
a. due to change in inductance
b. due to change in light
c. due to change in resistance
d. due to change in temperature
Q. Which of the following is correct for a level to force conversions?
a. Liquid at constant density distribution
b. Liquid with different density distribution
c. Level difference should be gradual
d. Liquid should be highly viscous
Q. Which devices measures gases or liquid?
a. Proximity sensor
b. Pressure sensor
c. Temperature sensor
d. Touch sensor