ASVAB Electronics Information Practice Test 137050 Results

Your Results Global Average
Questions 5 5
Correct 0 3.30
Score 0% 66%

Review

1

Resistance is opposition to which of the following?

70% Answer Correctly

voltage

conductance

current

impedance


Solution

Resistance is opposition to the flow of current and is measured in ohms (Ω). One ohm is defined as the amount of resistance that will allow one ampere of current to flow if one volt of voltage is applied. As resistance increases, current decreases as resistance and current are inversely proportional.


2 How would you connect 10 [6V 20A] batteries to achieve a combined power output of 60V 20A?
53% Answer Correctly
parallel
series
series-parallel
perpendicular

Solution

Connecting the 10 batteries in series multiplies their voltage while keeping their current the same yielding a 60V 20A configuration. Connecting the 10 batteries in parallel multiplies their current while keeping their voltage the same yieleding a 6V 200A configuration. Using a series-parallel connection, 5 batteries can be connected in series and 5 can be connected in parallel resulting in a 30V 100A configuration.


3

A capacitor to an electronic circuit is like a _______________ to a house?

67% Answer Correctly

gate

safe

driveway

storage shed


Solution

Capacitors store electricity and are used in circuits as temporary batteries. Capacitors are charged by DC current (AC current passes through a capacitor) and that stored charge can later be dissipated into the circuit as needed. Capacitors are often used to maintain power within a system when it is disconnected from its primary power source or to smooth out or filter voltage within a circuit.


4

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

61% Answer Correctly

two connections are made between each adjacent battery

the positive terminal of one battery is connected to the positive terminal of the next

total voltage equals the average of the individual battery voltages

total voltage equals the sum 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.


5

You would measure the amount of resistance at a certain point in a circuit with a(n):

78% Answer Correctly

ammeter

potentiometer

ohmmeter

voltmeter


Solution

Resistance is opposition to the flow of current and is measured in ohms (Ω). An ohmmeter is used to measure the amount of resistance at a certain point in a circuit.