ASVAB Electronics Information Practice Test 791641 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.72
Score	0%	74%

Review

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

70% Answer Correctly

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

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.

2 What's the overall power consumption of a piece of equipment that is rated for 3 amps at 70 volts?

80% Answer Correctly

	211.5 W
	231 W
	70 W
	210 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 70 volts (V) so the equation becomes P = \( 70 \times 3 \) = 210 W

The volt is a unit of measurement for:

79% Answer Correctly

	power
	capacitance
	voltage
	current

Solution

Voltage (V) is the electrical potential difference between two points. Electrons will flow as current from areas of high potential (concentration of electrons) to areas of low potential. Voltage and current are directly proportional in that the higher the voltage applied to a conductor the higher the current that will result.

Why is an insulator a poor conductor of electricity?

68% Answer Correctly

	an insulator has few free electrons
	an insulator has many free electrons
	an insulator is made of inorganic material
	an insulator is made of organic 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 not a purpose of a resistor in an electrical circuit?

70% Answer Correctly

	control the voltage in the circuit
	moderate the heat in the circuit
	multiply the current in the circuit
	limit the current in the circuit

Solution

Resistors can be chosen in a wide variety of values to control the voltage in a circuit, limit the current, or moderate the heat produced by the components in the circuit.