| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.09 |
| Score | 0% | 62% |
Which of the following is not a terminal on a transistor?
emitter |
|
collector |
|
input |
|
base |
A transistor works by allowing a small amount of current applied at the base to control general current flow from collector to emitter through the transistor.
Resistance and current are __________ proportional.
inversely |
|
exponentially |
|
not |
|
directly |
Resistance is opposition to the flow of current and is measured in ohms (Ω). One ohm is defined as the amount of resistance that will allow one ampere of current to flow if one volt of voltage is applied. As resistance increases, current decreases as resistance and current are inversely proportional.
The diameter of a number 12 wire is __________ the diameter of a number 6 wire?
more than |
|
less than |
|
triple |
|
double |
The larger the number the smaller the diameter of the wire. So, the diameter of a number 12 wire is less than the diameter of a number 6 wire.
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 |
|
increase or decrease the temperature of a component in the circuit |
|
open or close a circuit at a designated temperature |
|
keep the circuit at a designated safe temperature |
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.
Resistance is measured in:
ohms |
|
coulombs |
|
amperes |
|
volts |
Resistance is opposition to the flow of current and is measured in ohms (Ω). One ohm is defined as the amount of resistance that will allow one ampere of current to flow if one volt of voltage is applied. As resistance increases, current decreases as resistance and current are inversely proportional.