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FMIXSS PART 2
Contributed by: bil
  • 1. The output of a transducer is usually in the form of
A) mechanical movement
B) electrical signal
C) heat
D) magnetic field
  • 2. What does an LDR (Light Dependent Resistor) detect?
A) Temperature
B) Light intensity
C) Pressure
D) Sound
  • 3. What type of signal does an analog sensor produce?
A) Digital signal
B) Continuous signal
C) Pulse signal
D) Discrete signal
  • 4. Which of the following sensors can detect human motion?
A) Ultrasonic sensor
B) PIR (Passive Infrared) sensor
C) LDR
D) Hall effect sensor
  • 5. The analog-to-digital converter (ADC) in a microcontroller is used to:
A) convert analog signals to digital form
B) convert digital to analog signals
C) increase signal amplitude
D) store data
  • 6. Which of the following transducers generates its own electrical signal?
A) inductive transducer
B) secondary transducer
C) Passive transducer
D) active transducer
  • 7. Which memory stores the program code permanently in a microcontroller
A) EEPROM
B) RAM
C) Cache
D) ROM/Flash
  • 8. Which sensor is commonly used to measure distance using sound waves?
A) Photoresistor
B) Infrared sensor
C) Ultrasonic sensor
D) PIR sensor
  • 9. Produces voltage when exposed to a magnetic field.
A) humidity sensor
B) loudspeaker
C) hall effect sensor
D) Phototransistor
  • 10. Amplifies light signal for higher sensitivity.
A) loudspeaker
B) Phototransistor
C) humidity Sensor
D) hall effect sensor
  • 11. A type of sensor that measures the amount of moisture in the air
A) humidity sensor
B) loudspeaker
C) Phototransistor
D) hall effect sensor
  • 12. Which port type is used to connect sensors to a microcontroller?
A) HDMI
B) Audio port
C) Power port
D) I/O port
  • 13. An infrared sensor detects objects by measuring:
A) Reflected IR radiation
B) Sound waves
C) Temperature
D) Magnetic field
  • 14. Which of the following is NOT a feature of a microcontroller?
A) CPU
B) Hard disk
C) Memory
D) I/O ports
  • 15. A piezoelectric transducer converts
A) sound energy to electrical energy
B) mechanical stress to electrical voltage
C) electrical energy to sound energy
D) heat energy to mechanical energy
  • 16. What is a transducer?
A) A device that stores energy
B) A device that generates noise
C) converts one form of energy into another
D) A device that amplifies signals
  • 17. A device for converting electrical energy into acoustical signal energy that is radiated into a room or open air.
A) Sensor
B) Loudspeaker
C) microcontroller
D) Microphone
  • 18. A thermistor is a type of sensor that changes its resistance based on
A) Pressure
B) Pressure
C) Sound
D) Temperature
  • 19. What is a microcontroller?
A) A small computer on a single integrated circuit
B) A device that stores energy
C) A logic gate
D) A type of transistor
  • 20. The clock in a microcontroller determines:
A) storage capacity
B) power consumption
C) processing speed
D) output voltage
  • 21. The brain of a microcontroller is the:
A) CPU
B) ROM
C) I/O ports
D) RAM
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