ASVAB Electronics Information Practice Test 670394 Results

Your Results Global Average
Questions 5 5
Correct 0 3.48
Score 0% 70%

Review

1

This circuit component symbol represents a(n):

60% Answer Correctly

transformer

capacitor

inductor

resistor


Solution

An inductor is coiled wire that stores electric energy in the form of magnetic energy and resists changes in the electric current flowing through it. If current is increasing, the inductor produces a voltage that slows the increase and, if current is decreasing, the magnetic energy in the coil opposes the decrease to keep the current flowing longer. In contrast to capacitors, inductors allow DC to pass easily but resist the flow of AC.


2

This circuit component symbol represents a(n):

71% Answer Correctly

capacitor

transistor

diode

inductor


Solution

A diode allows current to pass easily in one direction and blocks current in the other direction. Diodes are commonly used for rectification which is the conversion of alternating current (AC) into direct current (DC). Because a diode only allows current flow in one direction, it will pass either the upper or lower half of AC waves (half-wave rectification) creating pulsating DC. Multiple diodes can be connected together to utilize both halves of the AC signal in full-wave rectification.


3

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

68% Answer Correctly

no trespassing sign

gate

driveway

safe


Solution

A transistor works by allowing a small amount of current applied at the base to control general current flow from collector to emitter through the transistor. A transistor acts as a gate or switch for electronic signals.


4

Which of the following allows current to pass easily in one direction and blocks current in the other direction?

69% Answer Correctly

diode

resistor

capacitor

inductor


Solution

A diode allows current to pass easily in one direction and blocks current in the other direction. Diodes are commonly used for rectification which is the conversion of alternating current (AC) into direct current (DC). Because a diode only allows current flow in one direction, it will pass either the upper or lower half of AC waves (half-wave rectification) creating pulsating DC. Multiple diodes can be connected together to utilize both halves of the AC signal in full-wave rectification.


5 Use Ohm's Law to calculate the value of current in this circuit if voltage is 275 volts and resistance is 50 Ω.
81% Answer Correctly
7.5 A
1.83 A
5.5 A
6.05 A

Solution

Ohm's law specifies the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit: V = IR.

Solved for current, I = \( \frac{V}{R} \) = \( \frac{275}{50} \) = 5.5 A