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