WorksheetsChapter 18 Electrical Instrumentation
Total questions: 20
Worksheet time: 10mins
A gauge in which three field coils are wound in series, with a coil at minimum reading, one at maximum reading, and one between the two.
3 coil gauge
2 coil gauge
bipolar stepper gauge
tripolar stepper gauge
A display screen that uses two transparent plates, one of which is electrically charged.
liquid crystal display
capacitance touch screen
back lit LED
digital touch screen
Speedometers can be calibrated using __________.
dip switches
flip switches
data bus reprogramer
gauge flashing
A sequence in which the warning lights for several brief seconds with the key on and engine off or during key-on engine cranking.
prove-out sequence
blink codes
self diagnostics
driver alert system
A gauge in which two dissimilar pieces of metal are bonded together and expand at different rates when heated, thereby converting the heating effect of electricity into mechanical movement.
2 coil gauge
3 coil gauge
bipolar stepper gauge
bimetallic gauge
A display screen composed of two flexible, transparent sheets lightly coated with an electrically conductive yet slightly resistive material.
liquid crystal display
resistive touch screen
back lit LED
capacitance touch screen
A method of providing fault code data for a specific system that involves counting the number of flashes from a warning lamp and observing longer pauses between the light blinks.
blink codes
code reader
prove out sequence
driver alert system
A device fitted to a vehicle to record various pieces of information, such as time, speed, rest periods, and distance traveled by each of the vehicle’s drivers.
tachograph
tachometer
speedometer
odometer
A type of electromagnetic gauge that moves a pointing needle directly proportional to current flow through an electromagnet attached to the pointer.
D’Arsonval gauge
bimetallic gauge
2 coil gauge
bipolar stepper gauge
a variable reluctance sensor produces ______________signal.
an a/c voltage
a direct voltage
a square wave
a pulse width
A variable inductance sensor would be used in all the following systems EXCEPT?
speedometer
ABS
tachometer
crankshaft position
A flexible bellows would be used in which of the following gauge circuits?
oil pressure
temperature
fuel level
coolant level
How much voltage is supplied to non-computerized gauges and sending units?
5 to 10 volts
3 to 7 volts
12 to 14.2
8 to 10
All of the following could require speedometer calibration EXCEPT?
change in tire height
change in axle ratio
change in tire diameter
change in tire width
Digitally driven, networked, or intelligent gauges use a ___________.
J1939 data bus
J1708 data bus
instrument voltage regulator
3 coil bipolar stepper
Opening or closing the sending unit circuit is a way to test ____________.
resistive gauges
pressure sensing gauges
networked gauges
intelligence gauges
If a fuel gauge reads full no matter what the fuel level is, the problem is most likely___________.
loss of sending unit ground
missing float on lever
un-calibrated gauge
grounded sending circuit wire
All the gauges move from minimum to maximum and back to minimum when the key is first moved to the on position. This is caused by ___________________.
a defective ground to the instrument cluster
a defective instrument voltage regulator
a gauge function sweep
a shorted sending unit
a low oil pressure warning light would use which of the following?
normally closed pressure switch
normally open pressure switch
normally open sending unit
normally closed sending unit
A fuel gauge circuit would use which of the following?
rheostat variable resistor
potentiometer variable resistor
bellows type variable resistor
thermal slide variable resistor
