Impedance and reactance - Study guides, Class notes & Summaries

NCCER 26201-20 ALTERNATING CURRENT QUESTIONS AND ANSWERS FULLY SOLVED An electric current always produces ? A magnetic field The number or cycles an alternating electric current undergoes per second is known as ? Frequency What is the peak voltage in a circuit with an RMS voltage of 120 VAC ? 170 VAC Wich of the following conditions exist in a circuit of pure resistance ? The voltage and current are in phase In a purely resistive AC circuit where 240v is applied ...

NCATT AET LATEST EXAM QUESTIONS WITH CORRECT DETAILED ANSWERS GRADED A+ What determines whether the vector is positive or negative is - Answer-determined if the circuit is more capacitate reactant or inductive reactant Voltage is common - Answer-in a parallel circuit If asked to determine impedance in a parallel cuircuit, you will need to determine - Answer-the total current in the circuit Resonance - Answer-a condition where the capacitive and inductive reactance of an LC circuit a...

BICSI Installer 1 Questions and Answers Already Passed 1. **What is the 25-pair color code used for?** - The 25-pair color code is used for identifying individual pairs of wires in telecommunications cables. It uses color combinations such as White - Blue, Orange, Green, Brown, Slate. White - Blue, orange, green, brown, slate Red - Blue, orange, green, brown, slate Black - Blue, orange, green, brown, slate Yellow - Blue, orange, green, brown, slate Violet - Blue, orange, green, br...

When using a dynamic schedule and the energy profile in an hour is >250 MW and the actual hourly integration deviates from the hourly energy profile by ____ the tag must be modified. A. 100 MW B. 10% C. 50 MW D. 25% B. 10% Dry steam plants, flash steam plants, and binary cycle power plants are the three main types of what kind of generating plant? A. Nuclear generators B. Combustion turbine generators C. Geothermal generators D. Hydroelectric generators C. Geothermal generators...

What is the most important law applicable to the study of electricity? - Answer-Ohm's Law (V = I x R) What are the elements of Ohm's Law? - Answer-Voltage (v), Current (I), Resistance (R) What are 4 sources of electrical power? - Answer-Mechanical (generator/ alternator), Chemical (battery), Photoelectric (light), and Thermal (heat) What does an electrical circuit consist of? - Answer-A source of electrical pressure (EMF), Resistance in the form of an energy consuming electrical devic...

Attenuation correct answers The Decrease in magnitude or power loss of a signal. Decibels, dB correct answers Unit of measurement for attenuation. American Wire Gauge (AWG) correct answers The numerical system for designating wire diameter. inverse relationship correct answers American Wire Gauge numbers have this relationship to the wire size. Balanced Twisted-Pair correct answers Type of wiring in which 2 conductors of a single circuit are twisted together in order to minimize EMI ...

The working voltage of a capacitor in an AC circuit should be CORRECT ANSWER at least 50 percent greater than the highest applied voltage The term that describes the combinded resistive forces in an AC circuit is CORRECT ANSWER impedance What is the opposition to the flow of AC produced by a magnetif field with generated back voltage (EMF) called? CORRECT ANSWER Inductive reactance Electrostatic fields are known as CORRECT ANSWER electrostatic fields The basis for transformer operati...

What is the most important law applicable to the study of electricity? ANSWER: Ohms law What are the elements of Ohm's Law? ANSWER: Voltage, Current & Resistance What are four sources of electrical power? ANSWER: Thermal, light, pressure and chemical What does an electrical circuit consist of? ANSWER: source, Load/resistance and conductors What represents capacitance in an AC circuit? ANSWER: a capacitor Deeagles - Stuvia US What is the function of a capacitor? ANSWER: to store elec...

Attenuation - correct answer The Decrease in magnitude or power loss of a signal. Decibels, dB - correct answer Unit of measurement for attenuation. American Wire Gauge (AWG) - correct answer The numerical system for designating wire diameter. inverse relationship - correct answer American Wire Gauge numbers have this relationship to the wire size. Balanced Twisted-Pair - correct answer Type of wiring in which 2 conductors of a single circuit are twisted together in order t...

What is the most important law applicable to the study of electricity? - CORRECT ANSWER Ohms law What are the elements of Ohm's Law? - CORRECT ANSWER Voltage, Current & Resistance What are four sources of electrical power? - CORRECT ANSWER Thermal, light, pressure and chemical What does an electrical circuit consist of? - CORRECT ANSWER source, Load/resistance and conductors What represents capacitance in an AC circuit? - CORRECT ANSWER a capaci...