Optical, Pressure, and Temperature Sensors Quiz

What is the working principle of a photoconductive cell?

• The resistance increases with light intensity

• The resistance decreases with light intensity

• The resistance remains constant with light intensity

• The resistance is not affected by light intensity

Which materials are commonly used in the manufacture of photoconductive cells?

• Cadmium sulfide and cadmium selenide

• Silicon and germanium

• Lead and zinc

• Aluminum and copper

What is the main advantage of photovoltaic cells?

• Intermittent Energy Generation

• Low Cost

• High Efficiency

• Environmental Sustainability

What is the limitation of solar panels mentioned in the text?

• High efficiency compared to other sources

• Low initial cost

• Energy from the sun is intermittent

• Easy long-range transmission

What is the working principle of a photoresistor?

• Resistance remains constant with light intensity

• Resistance increases with light intensity

• Resistance is not affected by light intensity

• Resistance decreases with light intensity

What are the types of photoresistors based on the properties of semiconductor material used?

• Conductive and Resistive

• Semiconductor and Insulator

• P-N Junction and Passive

• Extrinsic and Intrinsic

What is the main application of photoresistors mentioned in the text?

• Sound sensors

• Light sensors

• Pressure sensors

• Temperature sensors

What is the working principle of a Light Dependent Resistor (LDR)?

• Resistance increases with humidity

• Resistance changes according to the intensity of light

• Resistance remains constant with light intensity

• Resistance decreases with temperature

What is the principle on which Light Dependent Resistors (LDRs) work?

• Photoelectric effect

• Photoconductivity

• Piezoelectric effect

• Thermoelectric effect

What is the highest resistance of an LDR in dark conditions?

• 1 MOhm

• 10 kOhm

• 1 kOhm

• 100 Ohm