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WorksheetsI/O
Total questions: 16
Worksheet time: 8mins
Which component produces an analog signal?
All sensors that use a duty cycle
A potentiometer
Any on/off switch
All sensors that make a square wave
Which is true of a digital signal?
has more than 2 states
they instantly rise and fall between high and low states
is produced by all sensors that are inputs
is produced by all sensors that are outputs
Is the DSO connected to show that there are no power or ground faults?
Yes
No
Which tool is best to locate a loose ground?
DVOM
URDI
DSO
Test light
The time period changes that a duty cycle occurs within.
True
False
Yes, but only when the "on" time is more than 100%
No, but only when the "off" time is less than 100%
What is a variable frequency signal often used to measure?
A rotating component's speed or position
Very high temperatures
A duty cycle as a percentage
Switches that are operated quickly
What is high current draw most likely caused by?
Unwanted electrical resistance
Excessive voltage drop
Mechanical resistance
An actuator not using all the supplied voltage
What is low current draw most likely caused by?
Mechanical resistance
Unwanted electrical resistance
A short to B+
A short to ground, especially on the ground side
Which is true about an inductive sensor?
They use 3 wires and make their own sauce
They use 2 wires and generate an A/C voltage
They use 3 wires; sensor power, ground, and signal
They use no wires because it operates on PFM
When measuring sensor and switch signals, where should the DSO leads be placed?
The COM lead on the signal, and the red lead on sensor's power wire
The red lead on the power supply of the component, and the COM lead on the ground side of the component
A DSO should never be used to view sensor or switch signals
The COM lead on sensor or chassis ground, and the red lead on the signal wire
When measuring actuator signals, where should the DSO leads be placed?
The COM lead on B+ post, and the red lead on sensor's power wire
The red lead on the positive side of the component, and the COM lead on the ground side of the component
A DSO should never be used to view actuator signals
The COM lead on chassis ground, and the red lead on the signal wire
Variable Frequency signals use a fixed time frame called "period"
True
False
We didn't talk about that
True, but only at slow speeds
Hall Effect sensors send the voltage in their signals
True
False
We didn't talk about that
Hall Effect is used for actuators, not sensors
Switched power and switched ground switches are checked with the same DVOM lead placements
True
False
It depends if it is a 5v or 12v circuit
Measured Values are a dependable way to check voltage supply to a component
True
False
If a banana is worth 20, an apple is worth 5, and a pear is worth 12, how much is the image "worth"?
49
65
25
89
