FMIXSS PART 2
  • 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) Sound
C) Light intensity
D) Pressure
  • 3. What type of signal does an analog sensor produce?
A) Digital signal
B) Discrete signal
C) Continuous signal
D) Pulse 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) store data
B) convert digital to analog signals
C) increase signal amplitude
D) convert analog signals to digital form
  • 6. Which of the following transducers generates its own electrical signal?
A) active transducer
B) inductive transducer
C) secondary transducer
D) Passive 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) Ultrasonic sensor
B) Photoresistor
C) PIR sensor
D) Infrared sensor
  • 9. Produces voltage when exposed to a magnetic field.
A) loudspeaker
B) humidity sensor
C) Phototransistor
D) hall effect sensor
  • 10. Amplifies light signal for higher sensitivity.
A) humidity Sensor
B) loudspeaker
C) Phototransistor
D) hall effect sensor
  • 11. A type of sensor that measures the amount of moisture in the air
A) humidity sensor
B) Phototransistor
C) hall effect sensor
D) loudspeaker
  • 12. Which port type is used to connect sensors to a microcontroller?
A) I/O port
B) Power port
C) HDMI
D) Audio port
  • 13. An infrared sensor detects objects by measuring:
A) Reflected IR radiation
B) Temperature
C) Magnetic field
D) Sound waves
  • 14. Which of the following is NOT a feature of a microcontroller?
A) Memory
B) Hard disk
C) I/O ports
D) CPU
  • 15. A piezoelectric transducer converts
A) sound energy to electrical energy
B) electrical energy to sound energy
C) mechanical stress to electrical voltage
D) heat energy to mechanical energy
  • 16. What is a transducer?
A) A device that generates noise
B) A device that stores energy
C) A device that amplifies signals
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) microcontroller
B) Loudspeaker
C) Sensor
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 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) output voltage
B) power consumption
C) storage capacity
D) processing speed
  • 21. The brain of a microcontroller is the:
A) ROM
B) I/O ports
C) CPU
D) RAM
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