ASVAB Electronics Information Practice Test 565816 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.21
Score	0%	64%

Review

From what energy do photovoltaic cells produce electrical energy?

68% Answer Correctly

	magnetic
	sun
	chemical
	nuclear

Solution

A photovoltaic cell (also known as a solar cell) converts energy from the sun into electrical energy.

The sum of the voltage drops across each resistor in a __________ circuit will equal the total voltage applied to the circuit.

54% Answer Correctly

	parallel
	series-parallel
	series
	closed

Solution

A series circuit has only one path for current to flow. In a series circuit, current (I) is the same throughout the circuit and is equal to the total voltage (V) applied to the circuit divided by the total resistance (R) of the loads in the circuit. The sum of the voltage drops across each resistor in the circuit will equal the total voltage applied to the circuit.

3 A circuit with a 120-volt power supply is protected by a 25-amp circuit breaker. What is the largest number of watts loads on this circuit can safely use?

82% Answer Correctly

	6000 W
	3000 W
	2996 W
	3001.5 W

Solution

Wattage is current multiplied by voltage: W = IV. So, the maximum amount of power a 120-volt circuit with a 25A circuit breaker would allow is 120V x 25A = 3000 W.

Which of the following is not an advantage of semiconductors over conductors?

50% Answer Correctly

	a semiconductor's conductivity can be varied under an external electrical field
	materials to produce semiconductors are cheap and abundant
	a semiconductor exhibits increased conductivity with increased temperatures
	a semiconductor conducts current better than a conductor

Solution

A semiconductor is a material that has a limited ability to conduct electrical current with conductivity between that of an insulator and that of a conductor. Silicon, a cheap and abundant material, is the most used semiconductor material although other materials are used in the electronics components made from semiconductors. The primary advantages of a semiconductor over a conductor is that the conductivity of a semiconductor can be varied under an external electrical field giving engineers precise control over complex circuits and, unlike conductors like metals, a semiconductor's conductivity increases with increased temperatures.

An engineer who wants to document an electric circuit would create which of the following?

67% Answer Correctly

	a blueprint
	a schematic
	a matrix
	a layout

Solution

A schematic is the proper name for a drawing of an electric or electronic circuit.