FMIXSS PART 2
  • 1. The output of a transducer is usually in the form of
A) mechanical movement
B) heat
C) electrical signal
D) magnetic field
  • 2. What does an LDR (Light Dependent Resistor) detect?
A) Light intensity
B) Sound
C) Temperature
D) Pressure
  • 3. What type of signal does an analog sensor produce?
A) Digital signal
B) Continuous signal
C) Discrete signal
D) Pulse signal
  • 4. Which of the following sensors can detect human motion?
A) PIR (Passive Infrared) sensor
B) Ultrasonic 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) store data
C) convert digital to analog signals
D) increase signal amplitude
  • 6. Which of the following transducers generates its own electrical signal?
A) inductive transducer
B) secondary transducer
C) active transducer
D) Passive transducer
  • 7. Which memory stores the program code permanently in a microcontroller
A) RAM
B) EEPROM
C) ROM/Flash
D) Cache
  • 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) humidity sensor
B) loudspeaker
C) Phototransistor
D) hall effect sensor
  • 10. Amplifies light signal for higher sensitivity.
A) hall effect sensor
B) Phototransistor
C) loudspeaker
D) humidity Sensor
  • 11. A type of sensor that measures the amount of moisture in the air
A) hall effect sensor
B) Phototransistor
C) humidity 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) Magnetic field
C) Temperature
D) Sound waves
  • 14. Which of the following is NOT a feature of a microcontroller?
A) I/O ports
B) Hard disk
C) CPU
D) Memory
  • 15. A piezoelectric transducer converts
A) mechanical stress to electrical voltage
B) electrical energy to sound energy
C) heat energy to mechanical energy
D) sound energy to electrical energy
  • 16. What is a transducer?
A) A device that stores energy
B) A device that amplifies signals
C) converts one form of energy into another
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) Microphone
B) microcontroller
C) Sensor
D) Loudspeaker
  • 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 small computer on a single integrated circuit
C) A device that stores energy
D) A logic gate
  • 20. The clock in a microcontroller determines:
A) power consumption
B) processing speed
C) output voltage
D) storage capacity
  • 21. The brain of a microcontroller is the:
A) I/O ports
B) RAM
C) ROM
D) CPU
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