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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) magnetic field
C) mechanical movement
D) electrical signal
  • 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) Pulse signal
C) Continuous signal
D) Discrete signal
  • 4. Which of the following sensors can detect human motion?
A) LDR
B) PIR (Passive Infrared) sensor
C) Hall effect sensor
D) Ultrasonic sensor
  • 5. The analog-to-digital converter (ADC) in a microcontroller is used to:
A) convert analog signals to digital form
B) increase signal amplitude
C) convert digital to analog signals
D) store data
  • 6. Which of the following transducers generates its own electrical signal?
A) active transducer
B) secondary transducer
C) inductive transducer
D) Passive transducer
  • 7. Which memory stores the program code permanently in a microcontroller
A) EEPROM
B) ROM/Flash
C) RAM
D) Cache
  • 8. Which sensor is commonly used to measure distance using sound waves?
A) Infrared sensor
B) PIR sensor
C) Ultrasonic sensor
D) Photoresistor
  • 9. Produces voltage when exposed to a magnetic field.
A) hall effect sensor
B) humidity sensor
C) Phototransistor
D) loudspeaker
  • 10. Amplifies light signal for higher sensitivity.
A) Phototransistor
B) loudspeaker
C) hall effect sensor
D) humidity Sensor
  • 11. A type of sensor that measures the amount of moisture in the air
A) hall effect sensor
B) Phototransistor
C) loudspeaker
D) humidity sensor
  • 12. Which port type is used to connect sensors to a microcontroller?
A) Audio port
B) Power port
C) I/O port
D) HDMI
  • 13. An infrared sensor detects objects by measuring:
A) Sound waves
B) Magnetic field
C) Reflected IR radiation
D) Temperature
  • 14. Which of the following is NOT a feature of a microcontroller?
A) I/O ports
B) Memory
C) Hard disk
D) CPU
  • 15. A piezoelectric transducer converts
A) mechanical stress to electrical voltage
B) sound energy to electrical energy
C) heat energy to mechanical energy
D) electrical energy to sound 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) Microphone
B) Loudspeaker
C) microcontroller
D) Sensor
  • 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) power consumption
B) output voltage
C) processing speed
D) storage capacity
  • 21. The brain of a microcontroller is the:
A) RAM
B) I/O ports
C) ROM
D) CPU
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