| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.04 |
| Score | 0% | 61% |
A diode to an electronic circuit is like a _______________ to a city?
highway |
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one-way street |
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traffic light |
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parking lot |
A diode allows current to pass easily in one direction and blocks current in the other direction.
What is the voltage of most household electrical systems in the United States?
60V |
|
220V |
|
60Hz |
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110V |
Most households use electricity with a voltage of 110V.
In an electronic circuit, a thermocouple can be used to:
link the temperature of one component in the circuit to that of another component in the circuit |
|
open or close a circuit at a designated temperature |
|
keep the circuit at a designated safe temperature |
|
increase or decrease the temperature of a component in the circuit |
A thermocouple is a temperature sensor that consists of two wires made from different conductors. The junction of these two wires produces a voltage based on the temperature difference between them and can be used like a switch to open or close the circuit at a designated temperature.
Longer the electrical wires mean _______________ voltage drop.
lesser |
|
complete |
|
diminishing |
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greater |
Electrical wires have a certain amount of resistance per foot. A longer wire means more resistance and a greater voltage drop.
An inductor __________ changes in the electric current flowing through it.
resists |
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enhances |
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eliminates |
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doubles |
An inductor is coiled wire that stores electric energy in the form of magnetic energy and resists changes in the electric current flowing through it. If current is increasing, the inductor produces a voltage that slows the increase and, if current is decreasing, the magnetic energy in the coil opposes the decrease to keep the current flowing longer. In contrast to capacitors, inductors allow DC to pass easily but resist the flow of AC.