ASVAB Electronics Information Practice Test 120381 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.34
Score	0%	67%

Review

This circuit component symbol represents a(n):

57% Answer Correctly

	AC source
	DC source
	transformer
	capacitor

Solution

Direct current flows in only one direction in a circuit, from the negative terminal of the voltage source to the positive. A common source of direct current (DC) is a battery.

What type of current flows in only one direction in a circuit?

82% Answer Correctly

	series
	alternating
	parallel
	direct

Solution

Direct current flows in only one direction in a circuit, from the negative terminal of the voltage source to the positive. A common source of direct current (DC) is a battery.

Which of the following statements about a capacitor is false?

77% Answer Correctly

	a capacitor remains charged even after the input voltage is removed
	it is safe to touch a capacitor with your hands as long as it is small
	to discharge a capacitor safely, use a high-wattage resistor comparable to the capacitance of the capacitor
	you should always discharge any capacitors before working on an electronic circuit

Solution

The purpose of a capacitor is to retain electric charge and it will do so even after its input voltage is removed. After the input voltage is removed, the capacitor will slowly discharge but, depending on the size and characteristics of the capacitor, discharging could take from a few minutes to a few years. So, it's never safe to touch a capacitor with your hands and you should make sure to discharge any capacitors in a circuit before working on it using an appropriately high-wattage resistor or a capacitor discharge tool.

The volt is a unit of measurement for:

79% Answer Correctly

	voltage
	power
	current
	capacitance

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.

Which of the following is not a common type of battery?

41% Answer Correctly

	dry cell
	power-cycle
	deep-cycle
	wet cell

Solution

Direct current flows in only one direction in a circuit, from the negative terminal of the voltage source to the positive. A common source of direct current (DC) is a battery. The three most common types of batteries are dry cell (used in small devices like TV remotes), wet cell (used for cars), and deep-cycle (storage batteries used primarily for backup and emergency power).