Capacitor Study guides, Class notes & Summaries

NATE Gas Heating Exam Verified Questions and answers 2023 Latest Update Since 1992, the United States Department of Energy has required that all furnaces sold and installed from that date on must have an AFUE of no less than: A: 70% B: 75% C: 78% D: 80% - correct answer C: 78% Many pre-1992 furnaces have efficiencies around . A: 10% B: 40% C: 60% D: 80% - correct answer C: 60% Today, furnaces with AFUE ratings greater than are available. A: 85% B: 90% C: 100% D: 110% - correct ...

What constitutes a capacitor? CORRECT ANSWER Two conductors separated by an insulator. What is the purpose of a capacitor? CORRECT ANSWER It stores electrical energy in electrostatic fields. Does a capacitor in an AC cause the current to lead or lag the voltage? CORRECT ANSWER It causes the current to lead the voltage. What is the basic unit of capacitance? CORRECT ANSWER The farad. Why should electrolytic capacitors not be used in an AC circuit? CORRECT ANSWER They are polarized, An...

What constitutes a capacitor? CORRECT ANSWER -Two conductors separated by an insulator -In its most basic form the capacitor is constructed of two parallel plates separated by a nonconductor, called a dielectric. (FAA-H-8083-30, Ch. 10) What is the purpose of a capacitor? CORRECT ANSWER -It Stores electrical energy in a electrostatic field. -In an electrical circuit, a capacitor serves as a reservoir or storehouse for electricity. (FAA-H-8083-30, Ch. 10) Does a capacitor in an AC circuit...

Protective Relaying 4th Edition 8117 8124 6, 5, 8117, 2027, 4, 9, 0, 8124, 6492, 6485 Chapter 1: Introduction and General Philosophies Chapter 2: Fundamental Units: Per-Unit and Percent Values Chapter 3: Phasors and Polarity Chapter 4: Symmetrical Components: A Review Chapter 5: Relay Input Sources Chapter 6: Protection Fundamentals and Basic Design Principles Chapter 7: System-Grounding Principles Chapter 8: Generator Protection/Intertie Protection for Distribut...

ATT Test 4 (NEW 2024/ 2025 Update) Questions and Verified Answers| 100% Correct| Graded A QUESTION Low XC is associated with a long or short TC? Answer: Long QUESTION Is voltage small or large across a capacitor with low XC? Answer: Small QUESTION High XC is associated with a long or short TC? Answer: Short (because XC is small) QUESTION Is voltage small or large across a capacitor with high XC? Answer: Large (because XC is high) ...

NEIEP 600 Final Exam V1 (New 2023/ 2024 Update) Questions and Verified Answers| 100% Correct| Graded A QUESTION protect during charging Answer: resistor in series with capacitor QUESTION MOV has shorted Answer: excessive current in coil QUESTION electrolytic capacitors Answer: polarity sensitive QUESTION bleeder resistors Answer: to help drain voltage QUESTION total capacitance & max voltage Answer: 3...

ATT Test 5 (Latest 2024/ 2025 Update) Questions and Verified Answers| 100% Correct| Grade A Q: What is the purpose of diode clampers? Answer: To clamp AC signal AT a DC output level Q: What three components make up clamper circuit? Answer: capacitor, resistor, diode Q: When is the capacitor able to quickly charge in clamper circuit? Answer: When the diode is forward biased (low resistance) Q: What is the purpose of transistors? Answer: to contr...

What chemical compound is the CAD cell made of? - a. cadmium oxide b. cadmium nitride c. cadmium sulfide d. cadmium bromide Answer-C A permanent split-capacitor motor has a ____. - a. start and run capacitor b. start capacitor only c. run capacitor only d. split phase capacitor Answer-C for replacement or installation, it is good practiced to use the _________ rule to properly size the right tank for that customer. - a. 1/4 b. 1/2 c. 1/8 d. 1/3 Answer-D

NERC Prep - Bal, Int, & Trans Exam Questions and Answers Graded A+. What group can approve a change in the Disturbance Recovery Period for an Interconnection? a. NERC Interconnection Working Group b. NERC Operating Committee c. NERC Regional Council d. NERC Disturbance Analysis Working Group c. Check targets and equipment - What is the first thing an operator should do after a relay operation? a. Check power system stabilizers b. Notify adjacent Transmission and Balancing areas c. Che...

NEIEP 600 Final Exam Version 1 (Latest 2023/ 2024 Update) Questions and Verified Answers| 100% Correct| Grade A Q: What is the time constant for a circuit with 150 K ohms and 2 microfarad capacitor? (TC = R x C) Answer: 0.3 seconds Q: How long will it take for this capacitor to be considered fully charged? Answer: 1.5 seconds Q: The voltage required to cause conduction across the junction in a germa- nium diode is? Answer: 0.3 Q: A 1.5 volt 8 mill...