Electrical Quiz #2
Good luck and hope you enjoy this RSES Twin Cities quiz...
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1) The Diac is like the thyrister because it is a special purpose bidirectional diode semiconductor device.
False
True
Darn, I'm not sure...
2) When a triac is connected into an AC circuit, it is a:
Unidirectional conducting device
Tridirectional conducting device
Capacitive discharge device
Bidirectional conducting device
3) One example of an opto-electronic component which is sensitive to light is the:
Analog output cell
Photocell
Motion sensor
Infared sensor
Heat detecting cell
4) What causes the reed contacts of a reed relay to close?
Magnatism
Gravity
Electricity
Centrifugal force
Back EMF
5) A triac will conduct:
DC in the positive direction.
DC in the negative direction.
The negative half cycle of an AC waveform.
Both the positive and negative half cycles of an AC waveform.
The positive half cycles of an AC waveform.
6) A solid state relay, SSR, contains how many moving parts?
One
Three
Four
Two
Five
Six
Seven
7) What is the single most important advantage of the solid state relay?
Cost
Number of moving parts
Reliability
Range of voltages available
Amp ranges available
Size
Weight
8) Solid state relays which are used to control AC load circuits usually have a ________ connected to the load side instead of a power transistor.
Diode
Resistor
Diac
Triac
Thyristor
Capacitor
Temperature sensor
9) A good thermocouple normally produces about how many millivolts?
10
15
20
25
30
35
40
10) Electronic air filters should only work when the fan is running to prevent possible buildup of what?
CO2
CO
Ozone
Radon
Condensation
Moisture
Hydrocarbons
Have a great day!