ASVAB Electronics Information Practice Test 701088 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.64
Score	0%	73%

Review

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

79% Answer Correctly

	tin
	copper
	air
	gold

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.

2 What's the overall power consumption of a piece of equipment that is rated for 3 amps at 30 volts?

80% Answer Correctly

	45 W
	270 W
	90 W
	99 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 30 volts (V) so the equation becomes P = \( 30 \times 3 \) = 90 W

Using a fuse with a current rating higher than that required by a circuit:

70% Answer Correctly

	makes no difference
	is recommended
	is required
	makes the circuit less safe

Solution

A fuse is a type of low resistance resistor that stops current flow in a circuit in response to a larger than intended electric current flow. Using a fuse with a higher current rating than required by a circuit is less safe as it could potentially allow overcurrent and risk a fire or heat-related equipment damage.

Why is an insulator a poor conductor of electricity?

68% Answer Correctly

	an insulator is made of organic material
	an insulator has many free electrons
	an insulator has few free electrons
	an insulator is made of inorganic material

Solution

Insulators have valence shells that are more than half full of electrons and, as such, are tightly bound to the nucleus and difficult to move from one atom to another.

Which of the following is a characteristic of batteries connected in series?

61% Answer Correctly

	the positive terminal of one battery is connected to the positive terminal of the next
	total voltage equals the sum of the individual battery voltages
	two connections are made between each adjacent battery
	total voltage equals the average of the individual battery voltages

Solution

You can multiply the voltage or the current supplied by individual batteries by connecting them together either in series or in parallel. The characteristics of batteries connected in series are that total voltage equals the sum of the individual battery voltages, total current equals the average of the individual battery currents, the positive terminal of one battery is connected to the negative terminal of the next, and one connection is made between each adjacent battery.