Sensors and Input Circuit Devices

_________ are a type of Transducer because they convert physical conditions into electrical data.

• Sensors

• Switches

• Semiconductors

• Batteries

Which of the following is an example of a voltage generator?

• a.Variable capacitance pressure sensor

• b.NOx sensor

• c.Potentiometer

• d.Piezoresistive sensor

Potentiometers supply what type of data to processing circuits?

• a.Software

• b.Serial

• c.Analog

• d.Network

Technician A says that humidity sensors are used for adjusting air–fuel ratio control and cabin comfort control. Technician B says that the humidity sensors are used to detect rain/moisture. Who is correct?

• Tech A

• Tech B

• Both Techs

• Neither

Sensors provide information to __________.

• Electromagnetic operator devices

• Processing circuits

• Instrument gauges

• Electronic control units

A sensor is considered active if ______________.

• they get power from the ECU

• They get power from a signal condition circuit

• get power from the battery

• it has a self contained power source

______________ are the simplest sensors of all.

• Switches

• Pressure

• Temperature

• Transducers

Answer explanation

Switches have no resistance in the closed position and infinite resistance in the open position.

A switch is considered a sensor whenever they provide info to an electronic control system. An Example - Cruise Control Switch

Three wire sensors have a common wiring configuration of____________.

• one wire is common ground, one wire is positive, one wire is a back up positive connection.

• one wire is neutral, one wire is double negative, one wire is positive

• two wires are positive and the third wire is a signal

• One wire provides reference voltage, one wire provides ground signal to the ECU and the third wire provides a signal return from the sensor.

You can find the resistance of an unknown resistor by connecting it in series with a resistance of a known value. This process is called_____________.

• Voltage Reference

• Voltage Multiplication

• Voltage Dividing

• Voltage Addition

Devices that convert one form of energy into another are called_______________.

• Voltage Generator

• Switch

• Transducer

• Rheostat