Electronics Information Test Flashcards
7 cards from real ASVAB practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Electronics Information Test flashcards as text
What is the unit of electrical capacitance?
Answer: Farad
Capacitance is measured in farads (F), named after Michael Faraday.
In a parallel circuit with three 6-ohm resistors, what is the total resistance?
Answer: 2 ohms
In parallel, total resistance = 1/(1/6+1/6+1/6) = 6/3 = 2 ohms.
What does a diode primarily do in a circuit?
Answer: Allows current to flow in only one direction
A diode is a semiconductor device that permits current to flow in one direction only.
Which type of transformer steps voltage up from primary to secondary coil?
Answer: Step-up transformer
A step-up transformer has more turns on the secondary coil than the primary, increasing voltage.
What is the color code for a resistor with bands: Red, Red, Brown, Gold?
Answer: 220 ohms ±5%
Red=2, Red=2, Brown=×10 multiplier, Gold=±5% tolerance gives 220 ohms ±5%.
What happens to capacitive reactance as frequency increases?
Answer: It decreases
Capacitive reactance Xc = 1/(2πfC), so it decreases as frequency increases.
Which semiconductor device can function as both a switch and an amplifier?
Answer: Transistor
A transistor can amplify signals or act as an electronic switch depending on how it is biased.