Sensor Networks Quiz

Which of the following is a key feature of a sensor network?

• Centralized control architecture

• Homogeneous nodes with fixed energy levels

• Distributed sensing and data processing

• Lack of scalability

What type of sensor measures physical quantities like length, width, or distance?

• Thermal sensor

• Proximity sensor

• Optical sensor

• Acoustic sensor

Which of the following classifications best describes sensors based on their power supply?

• Passive and active sensors

• Analog and digital sensors

• Contact and non-contact sensors

• Wireless and wired sensors

What characteristic defines the smallest change a sensor can detect in its input?

• Sensitivity

• Resolution

• Accuracy

• Drift

Which type of sensor detects the presence or absence of an object without physical contact?

• Temperature sensor

• Proximity sensor

• Pressure sensor

• Force sensor

How are sensors classified based on their output signal?

• Passive and active sensors

• Contact and non-contact sensors

• Analog and digital sensors

• Internal and external sensors

What is the term for the ability of a sensor to consistently reproduce the same output under identical conditions?

• Linearity

• Repeatability

• Range

• Drift

In a sensor network, which factor primarily affects the lifetime of the network?

• Number of nodes

• Sensor size

• Energy efficiency

• Transmission speed

Which of the following is NOT a characteristic of an ideal sensor?

• High sensitivity

• Low selectivity

• Wide range of operation

• Fast response time

What type of sensor is commonly used in applications like weather monitoring and HVAC systems to measure temperature?

• Thermistor

• Ultrasonic sensor

• Inductive sensor

• Gyroscope