Electronics ETA Certification Practice Exam Questions with 100% Correct Answers | Verified, Exams of Advanced Education

Download Electronics ETA Certification Practice Exam Questions with 100% Correct Answers | Verified and more Exams Advanced Education in PDF only on Docsity! Electronics ETA Certification Practice Exam Questions with 100% Correct Answers | Verified | Updated 2024 The "triboelectric effect" causes what kind of electricity? - Correct Answer-Static The law of static electrical charges states: - Correct Answer- like charges repel Minute particles that make up all possible elements and still retain the unique chemical characteristics of the element are called _____________. - Correct Answer-Atoms A molecule is the smallest particle of matter that can exist by itself. (1) - Correct Answer-True (1) A basic atom must contain what two types of subatomic particles? - Correct Answer-Electron and proton An electron has _______________. - Correct Answer-a Negative charge pg. 1 professoraxe l What two types of energy are used throughout electronics? - Correct Answer-Kinetic and potential Electrical direct current flowing in a wire produces a magnetic field: - Correct Answer-at right angles to current flow A material is magnetized when the: - Correct Answer-domains are in alignment A material that can be magnetized easily falls into this category: - Correct Answer-Ferromagnetic Invisible lines of force that surround a magnet are called ___________________. - Correct Answer-magnetic flux lines The pole of a magnet from which flux leaves is called the __________________. - Correct Answer-north _________________ force produces magnetic flux. - Correct Answer-Magnetomotive pg. 2 professoraxe l The Wheatstone bridge can be used for precision measurements of: - Correct Answer-resistance The ammeter setting on a multimeter indicates what type of reading? - Correct Answer-current A resistor with color bands of blue, gray and black has a value of _______________. - Correct Answer-68 ohms 20% A/an _____________ allows current to flow easily. - Correct Answer-conductor A/an _________________ stops the flow of current. - Correct Answer-insulator A component whose value is measured in microfarads is a: - Correct Answer-capacitor A component whose value is measured in ohms is a: - Correct Answer-resistor pg. 5 professoraxe l Switches are rated in maximum ___________ and ______________. (1) - Correct Answer-current, voltage (1) Fuses are rated in maximum _____________ and ______________. - Correct Answer-current, voltage In an electrical circuit where the voltage and resistance are known, which form of Ohm's law is used to find the circuit current? - Correct Answer-I = E/R A unit of energy is the: - Correct Answer-Joule Which of the following is commonly used to measure electrical energy consumption? - Correct Answer-Kilowatt- Hours 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: - Correct Answer-Ohm's Law Ohm's Law states that voltage is the product of resistance and current. Using algebra, how would you determine the resistance? - Correct Answer-divide the voltage by the current pg. 6 professoraxe l 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? - Correct Answer-current squared times the resistance What does the M+ key on a calculator do? - Correct Answer- sums the quantity on screen to memory The basic unit of length in the metric system is the ___________. - Correct Answer-meter A 120,000 Ohm resistor can be entered into a calculator using scientific notation as ____________. - Correct Answer-1.2 x 10^5 Which symbol is used for Ohms of resistance? - Correct Answer-Omega Which symbol means "a change of"? - Correct Answer- Triangle pg. 7 professoraxe l If a series circuit has two 13 kΩ resistors with a source voltage of 10 V, the wattage is _________. - Correct Answer-3.85 mW Kirchoff's voltage law (KVL) states that the total voltage around a closed loop must be zero. (3) - Correct Answer-True (3) When resistors are added in parallel to a parallel circuit, total current ________________. - Correct Answer-Increases In a parallel circuit, total resistance _______________. - Correct Answer-is less than the resistance of any branch In a simple parallel circuit, the voltage across each branch is ________________. - Correct Answer-equal to the source voltage With three 4.5 kΩ resistors and one 1.5 kΩ resistor in parallel, the total resistance is __________. - Correct Answer-750 ohms pg. 10 professoraxe l 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. - Correct Answer- True (4) The total current in a series-parallel circuit equals the _____________. - Correct Answer-applied voltage divided by the total resistance When two 10 kΩ parallel resistors are connected in series with a third 10 kΩ resistor, total resistance (RT) is ____________. - Correct Answer-15 kiloohms With 70 volts applied to two 30 kΩ resistors in series connected to three30 kΩ resistors in parallel forming a series-parallel circuit, what is the total current? - Correct Answer-1 mA If a short occurs in the parallel portion of a series-parallel circuit, how will the total resistance be affected? - Correct Answer-It will decrease pg. 11 professoraxe l Thevenin's Theorem states that it is possible to simplify any circuit containing any amount of voltage sources, current sources or resistances, no matter how complex, to an equivalent circuit with just a single voltage source and series resistance connected to a load. (5) - Correct Answer-True (5) Battery cells are connected in parallel to ________________. - Correct Answer-increase current capacity Battery cells are connected in series to _____________________. - Correct Answer-increase voltage output The output of a lead-acid cell is approximately: - Correct Answer-2.1 V Given a battery rated at 200 ampere-hours, how many hours will the battery be able to provide 10 amperes? - Correct Answer-20 pg. 12 professoraxe l