Download ELECTRONICS ETA CERTIFICATION PRACTICE EXAM COMPREHENSIVE ELECTRONICS FUNDAMENTALS STUDY G and more Exams Electronics engineering in PDF only on Docsity!
ELECTRONICS ETA CERTIFICATION PRACTICE
EXAM COMPREHENSIVE ELECTRONICS
FUNDAMENTALS STUDY GUIDE 2026
โ The law of static electrical charges states: Answer: like charges repel โ Minute particles that make up all possible elements and still retain the unique chemical characteristics of the element are called _____________. Answer: Atoms โ A molecule is the smallest particle of matter that can exist by itself. (1) Answer: True (1) โ A basic atom must contain what two types of subatomic particles? Answer: Electron and proton โ An electron has _______________. Answer: a Negative charge
โ What two types of energy are used throughout electronics? Answer: Kinetic and potential โ Electrical direct current flowing in a wire produces a magnetic field: Answer: at right angles to current flow โ A material is magnetized when the: Answer: domains are in alignment โ A material that can be magnetized easily falls into this category: Answer: Ferromagnetic โ Invisible lines of force that surround a magnet are called ___________________. Answer: magnetic flux lines โ The pole of a magnet from which flux leaves is called the __________________. Answer: north
Answer: All jewelry should be removed โ The main purpose of a safety observer is to: Answer: turn off equipment in use and apply emergency first aid or cardiopulmonary resuscitation if needed โ You should use caution when talking to someone who is operating electrical equipment because the distraction: Answer: โข could damage the equipment
- both could be injured
- could ruin an electronic device โ Which device would most likely include a light level meter? Answer: Camera โ The most common functions of a generic multimeter are _________________________. Answer: voltmeter, ammeter and ohmmeter โ Digital multimeters eliminate which of the following disadvantages of analog meters? Answer: โข Low impedance
- Poor accuracy
- Parallax errors โ The Wheatstone bridge can be used for precision measurements of: Answer: resistance โ The ammeter setting on a multimeter indicates what type of reading? Answer: current โ A resistor with color bands of blue, gray and black has a value of _______________. Answer: 68 ohms 20% โ A/an _____________ allows current to flow easily. Answer: conductor โ A/an _________________ stops the flow of current. Answer: insulator โ A component whose value is measured in microfarads is a: Answer: capacitor
โ The current flowing in a circuit is directly proportional to the applied voltage and inversely proportional to the circuit resistance. This is a statement of: Answer: Ohm's Law โ Ohm's Law states that voltage is the product of resistance and current. Using algebra, how would you determine the resistance? Answer: divide the voltage by the current โ Watt's law states that power is the product of current and voltage. Using algebra, how could the power be determined if resistance and current are known? Answer: current squared times the resistance โ What does the M+ key on a calculator do? Answer: sums the quantity on screen to memory โ The basic unit of length in the metric system is the ___________. Answer: meter โ A 120,000 Ohm resistor can be entered into a calculator using scientific notation as ____________. Answer: 1.2 x 10^
โ Which symbol is used for Ohms of resistance? Answer: Omega โ Which symbol means "a change of"? Answer: Triangle โ Which metric prefix would be used to represent 1 x 10^6? Answer: Mega โ Which metric prefix would be used to represent 1 x 10^-3? Answer: Milli โ Which metric prefix would be used to represent 1 x 10^12? Answer: Tera โ ________________ is a term used to describe voltage. Answer: Electromotive force โ The unit of measurement for electron flow is a(n) ____________. Answer: ampere
โ When the resistance of a series circuit decreases, ________________________. Answer: total current increases โ If a series circuit has a current of about 15.4 mA and a source voltage of 20 V, the total resistance is approximately ____________________. Answer: 1300 ohms โ If a series circuit has two 13 kฮฉ resistors with a source voltage of 10 V, the wattage is _________. Answer: 3.85 mW โ Kirchoff's voltage law (KVL) states that the total voltage around a closed loop must be zero. (3) Answer: True (3) โ When resistors are added in parallel to a parallel circuit, total current ________________. Answer: Increases โ In a parallel circuit, total resistance _______________. Answer: is less than the resistance of any branch
โ In a simple parallel circuit, the voltage across each branch is ________________. Answer: equal to the source voltage โ With three 4.5 kฮฉ resistors and one 1.5 kฮฉ resistor in parallel, the total resistance is __________. Answer: 750 ohms โ Kirchhoff's first law is also know as the principle of conservation of electric charge. It states that at any point, the sum of currents flowing towards that point is equal to the sum of currents flowing away from that point. Answer: True (4) โ The total current in a series-parallel circuit equals the _____________. Answer: applied voltage divided by the total resistance โ When two 10 kฮฉ parallel resistors are connected in series with a third 10 kฮฉ resistor, total resistance (RT) is ____________. Answer: 15 kiloohms
โ The output of a lead-acid cell is approximately: Answer: 2.1 V โ Given a battery rated at 200 ampere-hours, how many hours will the battery be able to provide 10 amperes? Answer: 20 โ
