This
consists of usually two coil windings which usually share a magnetic core. It
is used to convert an AC source or signal into another AC source or signal with
the same power (ideally) but different voltage and current.
A. transistor B. transformer
C. relay D.choke
Oops!
Check
Okay!
Check
10
This
is a type of semiconductor in which the flow of current can be controlled
through a base or gate terminal. It is usually used for electronic switching or
amplifiers.
A. diode
B. varistor
C. resistor D. transistor
Oops!
Check
Okay!
Check
5
What does LED standfor?
A. Light Emitting Display B. Low Energy Display C. Light Emitting Diode D. Light Emitting Detector
Oops!
Check
Okay!
Check
10
Connecting a lead
from the negative to the positive of a battery will produce:
A. A high resistance circuit B. A short circuit C. A low current path
D. An open circuit
Oops!
Check
Okay!
Check
10
This is a type of display that uses tiny polarized crystals that align when currentis passed through them. Used in conjuction with a polarized lens they darkenwhen energized. They are very popular in watches, calculators, and lap-tops.
A. LCD B. CRT C. LED D. Quartz Crystal
Oops!
Check
Okay!
Check
lifesaver
Give 25 points!
Oops!
fairy
Take points!
5
10
15
20
25
gift
Win 20 points!
Okay!
banana
Go to last place!
Oops!
10
Made from a variety of materials, such as carbon, this inhibits the flow of current.
A.inductor B.resistor C.capacitor D.choke
Oops!
Check
Okay!
Check
boom
Lose 50 points!
Oops!
magnet
Take 15 points!
Okay!
rocket
Go to first place!
Okay!
banana
Go to last place!
Oops!
5
What does the symbol stand for?
A. transformer B. transistor C. thyristor D. relay
Oops!
Check
Okay!
Check
monster
Reset all scores!
Oops!
seesaw
Swap points!
Okay!
shark
Other team loses 25 points!
Okay!
banana
Go to last place!
Oops!
5
What does the symbol stand for?
A. photodiode B. LED C. LDR D. phototransistor
Oops!
Check
Okay!
Check
10
This
is a type of semiconductor that only allows current to flow in one direction.
It is usually used to rectify AC signals (conversion to DC).
A. diode B. transformer
C. resistor D. inductor
Oops!
Check
Okay!
Check
10
If a small value of capacitance is connected in parallel with a large value, the combined capacitance will be:
A. The sameB. HigherC. Lower D. Cannot be determined
Oops!
Check
Okay!
Check
10
This consists of two plates separated by a dielectric and can store a charge. Useful in tuning and filtering circuits, it blocks DC while passing AC.
A.capacitor B.transistor C.inductor D.relay
Oops!
Check
Okay!
Check
10
If two resistors are placed in series, is the final resistance:
A. Higher B. Lower C. The same D. Cannot be determined
