ASVAB Electronics Information Practice Test 504339 Results

Your Results Global Average
Questions 5 5
Correct 0 3.55
Score 0% 71%

Review

1

What kind of diode allows current to flow in the opposite direction once a certain voltage threshold is reached?

50% Answer Correctly

v-type diode

light emitting diode

standard diode

zener diode
Solution

A diode allows current to pass easily in one direction and blocks current in the other direction. A zener diode is a diode which allows current to flow in one direction as normal and will also allow current flow in the reverse direction when the voltage is above a certain value. This value is called the breakdown voltage.

2

Which of these materials is not a good conductor of electricity?

79% Answer Correctly

copper

gold

tin

air
Solution

All conductors have resistance and the amount of resistance varies with the element. In general, metals make the best conductors of electricity and non-metals make the worst conductors of electricity.

3 What's the overall power consumption of a piece of equipment that is rated for 3 amps at 50 volts?
85% Answer Correctly
151.5 W
50 W
150 W
300 W
Solution
Power is measured in watts (W) and 1 watt equals 1 ampere multiplied by 1 volt: P = \( V \times I \). For this problem, the equipment is rated for 3 amps (I) at 50 volts (V) so the equation becomes P = \( 50 \times 3 \) = 150 W
4

Why does current in an electric circuit create heat?

77% Answer Correctly

the wire in the circuit burns when current passes through

heat is created when the current overcomes resistance in the wire

voltage is naturally hot

current is naturally hot
Solution

Current in an electric circuit creates heat when the current overcomes resistance in the wire.

5 How would you connect 4 [6V 5A] batteries to achieve a combined power output of 24V 5A?
53% Answer Correctly
parallel
orthogonal
series
perpendicular
Solution

Connecting the 4 batteries in series multiplies their voltage while keeping their current the same yielding a 24V 5A configuration. Connecting the 4 batteries in parallel multiplies their current while keeping their voltage the same yieleding a 6V 20A configuration. Using a series-parallel connection, 2 batteries can be connected in series and 2 can be connected in parallel resulting in a 12V 10A configuration.