Electronics2

What does PIR stands for?

• Proximity infrared sensor

• Proximity integrated sensor

• Passive infrared resistor

• Passive infrared sensor

On what principle does Ultrasonic sensor works

• Doppler effect

• Polarising effect

• Hall effect

• None of these

Which batteries are advised to use in drones?

• Lithium polymer batteries

• Cadmium batteries

• Lithium ion batteries

• Lead acid batteries

No of pins in Lm35(temperature sensor)

Which of these is a virtual simulator?

• TinkerCAD

• Fusion360

• Proteus

• All of these

Which of these is correct?

• A-anode, B-cathode

• A-cathode, B-anode