WorksheetsUNIT - I
Total questions: 8
Worksheet time: 2mins
Which human sense is most closely related to optical sensors?
A. Hearing
B. Smell
C. Vision
D. Touch
An actuator primarily:
A.Measures physical quantities
B. Stores energy
C. Converts electrical signals into physical action
D. Filters signals
The span of a sensor is defined as:
A. Maximum input
B. Minimum input
C. Difference between maximum and minimum input
D. Resolution of the sensor
NTC thermistors have resistance that:
A. Increases with temperature
B. Decreases with temperature
C. Remains constant
D. Changes randomly
Acoustical temperature sensors rely on:
A. Speed of sound variation
B. Light intensity
C. Resistance change
D. Chemical reaction
Thermo-mechanical actuators convert
A. Mechanical energy into heat
B. Heat into mechanical displacement
C. Light into heat
D. Sound into motion
In a breath analyzer, temperature sensing is important because:
A. Alcohol evaporates faster at higher temperatures
B. Sensors stop working at low temperature
C. Breath has constant temperature
D. Pressure remains unchanged
Calibration of a breath analyzer ensures:
A. Faster warm-up
B. Correct alcohol concentration readings
C. Lower Cost
D. Smaller device size
