WorksheetsElectrical Chapter 20 sensors
Total questions: 20
Worksheet time: 10mins
A sensor that does not use a current supplied by the ECM to operate.
passive sensor
active sensor
pull-up sensor
pull-down sensor
A sensor used to measure rotational speed, including wheel speed, vehicle speed, engine speed, and camshaft and crankshaft position.
variable reluctance sensor
active sensor
rotational inductance sensor
rotational speed sensor
A switch connected between the ECM and a battery positive.
pull-down sensor
pull-up sensor
active sensor
passive sensor
A circuit used for safety reasons that is used to verify throttle position.
idle validation switch
throttle position sensor
rev limiter circuit
manifold absolute pressure sensor
A sensor that detects oxygen ions originating from nitric oxide from among the other oxygen ions present in the exhaust gas.
NOX sensor
oxygen sensor
soot sensor
ammonia sensor
A switch connected between the ECM and a negative ground current potential.
pull-down switch
pull-up switch
rheostat
potentiometer
A precisely regulated voltage supplied by the ECM to sensors; the value is typically 5 VDC, but some manufacturers use 8 or 12 volts.
Vref
IVR
digital
feedback
A sensor that uses a current supplied by the ECM to operate.
active sensor
passive sensor
hall effect sensor
variable reluctance sensor
A temperature-sensitive variable resistor commonly used to measure coolant, oil, fuel, and air temperatures.
thermistor
transistor
pyrometer sensor
thermal potentiometer
A variable resistor with three connections— one at each end of a resistive path, and a third sliding contact that moves along the resistive pathway.
rheostat
potentiometer
passive sensor
digital inverter
A sensor commonly used to measure the rotational speed of a shaft; they have the advantage of producing a digital signal square waveform and have strong signal strength at low shaft rotational speeds.
pulse width modulation
hall effect
variable inductance
variable reluctance
variable capacitance and strain gauge restistive would be types of ________________ sensors.
pressure
potentiometer
rheostat
temperature
All of the following are correct concerning hall effect sensors EXCEPT?
produce digital signal
are superior for low speed
are single wire
can be used for position
All of the following are correct concerning voltage generators EXCEPT?
a NOX sensor is a voltage generator
voltage generators produce direct current
voltage generators can produce a frequency signal
variable reluctance sensors are voltage generators
An ammonia sensor would be located _____________?
after the scr
scr inlet
decomposition tube
urea doser outlet
On a diesel engine, the MAF sensor is used to _____________.
help monitor EGR
help obtain stoichiometric ratios
determine turbo boost
measure intake air temperature
Which of the following is correct concerning sensors that use Vref?
they have 3 wires
they are pull-down sensors
are grounded through the sensor body
do not provide a feedback signal voltage
A ZVR wire can also be called a _____________ by some manufacturers.
ground return
Vref
signal
supply power in
thermistors are __________ type devices?
variable resistor
piezo resistive
pressure sensing
on-off digital producing
Which of the following is correct related to MAF sensors?
measures air density
measures air temperature
produces analog signal
is a voltage generator
