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