Exam 9: Computer Inputssensor Diagnostic Routines

Magnetoresistive can be used in which systems?

What does the potentiometric pressure sensor use to move the wiper arm on a resistive element?

Technician A says the output of a Hall-effect sensor can be checked with an AC voltmeter. Technician B says output of a magnetic pulse generator can be tested with a lab scope. Who is correct?

____ occurs when the switch is open resulting in the input to the voltage-sensing circuit of the control module being susceptible to electrical noise that may cause the control module to misread the switch state.

A capacitance discharge sensor that produces a digital voltage signal of varying frequency is being discussed. Technician A says a voltmeter can be used to monitor the signal circuit output. Technician B says a DMM that has a frequency measurement function can be used to monitor the signal circuit output. Who is correct?

What is the principle of operation of the infrared temperature sensor?

By monitoring the thermistor's resistance value, the computer is capable of observing very small changes in ____.

The _______________ resistor assures the proper low-voltage reading by preventing float when the switch is open.

Explain the purpose of the thermistor and how it is used in a circuit.

One form of feedback is for the computer to monitor ____ as a switch, relay, or other actuator is activated.

Magnetoresistive (MR) sensors consist of the magnetoresistive sensor element, a permanent magnet, and an integrated signal conditioning circuit to change resistance due to the relationship of the tone wheel and magnetic field surrounding the sensor.

Pressure switch circuits are ____ type switches.

Accelerometers can also be designed as piezoresistive sensors. What is the basic operating characteristics of this sensor?

How many wires does the linear Hall-effect sensor typically use?

Instead of using a silicon diaphragm, the capacitance discharge sensor uses a ___________ capacitor.

What is the Wheatstone bridge used to measure?

Technician A says the output of one computer can also be used as an input to another computer. Technician B says a sensor is an output device. Who is correct?

A Hall-effect switch operate on the principle that if a current is allowed to flow through a thin conducting material exposed to a magnetic field, another voltage is produced. A magnetic pulse generator uses electromagnetic induction to produce a voltage signal.

Intermittent faults with sensors usually set a(n) ____.

Most motion and speed sensors use a(n) ____ as the sensing element or sensed target to detect rotational or linear speed.