Reference no: EM133234723

Question 1. The sensor data sheet will usually include the following essential facts:

a. a text description of the sensor and its operation.

b. a pin diagram to tell you what pins perform what functions.

c. a table of electrical characteristics that tells you what the supply voltage is, what the operating current is, and what the output is, along with other electrical and physical properties.

d. All above

Question 2. Which one is NOT correct for Light Dependent Resistance (LDR) sensor

a. LDR is a special type of resistance whose value depends on the brightness of the light falling on it.

b. It has resistance of about 1 mega ohm when in total darkness, but a resistance of only about 5k ohms when brightness illuminated.

c. It is not responds to a large part of light spectrum. (38/0)

d. LDR is placed as potential divider circuit so that output voltage will vary according to its resistance or light falling on it.

Question 3. Select the wrong choice for Wireless Sensor Networks (WSN)

a. The networks typically run Low Power Devices,

b. Consist of one or more sensors,

c. Must be connected to Internet,

d. Could be different type of sensors (or actuators)