Current in circuit Study guides, Class notes & Summaries

In capacitors, what is the purpose of the dielectric? - ANSWER-Prevent arcing within the capacitor Which of the following is true about capacitors in AC circuits? - ANSWER-Current leads voltage all the time What describes a capacitor s ability to store an electrical charge? - ANSWER-Capacitance which of the following statements is correct about polarized electrolytic capacitors? - ANSWER-Voltage polarity must be correct What is the time constant for a circuit with 150k ohms and 2 mic...

NEIEP 700 Final Exam Version 1 (Latest 2023/ 2024 Update) Questions and Verified Answers| 100% Correct| Grade A Q: When an elevator constructor describes a normal open contact or a making contact he or she is describing the same contact configuration. Answer: True Q: As current flows through a relay's coil _______________________ generated by the coil will pull or pick the relay's armature . Answer: Magnetic field Q: The most common relay used today is the plug type....

NEIEP 800 Final Exam Version 2 (Latest 2024 / 2025 Update) Questions and Verified Answers | 100% Correct | Grade A Q: With wye-delta, reduced current starting is accomplished without the need for _____. Answer: resistors Q: _____ run buttons should run the platform and sling at leveling speeds only. Answer: Temporary Q: A _____ _____ consists of a piston held closed by an adjustable spring and must open at a certain pressure to prevent any further increase in pressure. Answer: relief valve Q: A ...

CCDS IBHRE LATEST UPDATE ALREADY GRADED A Rheobase the lowest point on a strength duration curve at an infinitely long pulse duration Chronaxie time the pulse width at twice the rheobase value. It approximates the most efficient stimulation pulse duration Charge (formula) Charge= I(current) x T(time) Furman's formula Energy(microjoules)= I(current)xV(voltage)xT(pulse width) Ohms law formula Voltage(electromotive force)= I(current/flow of electrons) x R(resistance to current flow in ohms) F...

What is the result if the neutral wire becomes open on a multiwire circuit having unequal loads? Select one: a. The load of higher resistance would overheat and probably be damaged. b. The load of lesser resistance would overheat and probably be damaged. c. No effect until one load is turned off or opens. d. No effect. The load of higher resistance would overheat and probably be damaged. Refer to Figure 128.202. ___ volts are applied across the water heater element. S...

NEIEP 600 Final Exam Version 2 (Latest 2024 / 2025 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 milliamp light emitting diode needs to be operated...

NEIEP 600 Final VERIFIED 100% SOLUTIONS 2023//2024 WITH DIAGRAM ILLUSTRATIONS Zener current will decrease Refer to figure 1. If the load resistance R2 is reduced by half what happens what happens to zener diode? 4v Refer to figure 1. The zener diode is designed to breakdown at 6VDC what is the voltage drop across R1 with a constant DC supply of 10VDC 30 rpm An elevators motor rotates at 1200 rpm at contract speed and is geard at a ratio of 40:1. If the motor turns 40 rpm the...

ASD Exam Questions With 100% Correct Answers 2023 Category 1 - Correct Answer-Category of Water that originates from sanitary water source (Clean) Catetroy 2 - Correct Answer-Category of Water that is contaminated; may cause discomfort or sickness (Grey) Category 3 - Correct Answer-Category of Water that is grossly contaminated; includes toxins, pathogens Special Situation - Correct Answer-Regulated or hazardous materials Class 1 - Correct Answer-Class of water that has least amount...

NEIEP 700 Final Exam Version 2 (Latest 2023/ 2024 Update) Questions and Verified Answers| 100% Correct| Grade A Q: What is the primary reason AC relays hum or chatter? Answer: AC cycle reversal Q: Which of the following best describes the contact rating of a magnetic switch? Answer: The maximum voltage and current that can be safely interrupted Q: How can you reduce contact arcing on plug-in relay contacts? Answer: Wire two contacts of the same relay in series ...

NEIEP 500 Final Exam Version 1 (Latest 2023/ 2024 Update) Questions and Verified Answers| 100% Correct| Grade A Q: How are wire sizes larger than 4/0 measured? Answer: In circular mils Q: What is the abbreviated term for current carry8ing capacity? Answer: Ampacity Q: What is the minimum size wired for lighting circuits in an elevator installation? Answer: #14 Q: What is the special about wire used for the interlock circuit? Answer: It must be rate...

What does GMAW stand for - Answer-Gas Metal Arc Welding GMAW is generally done with what polarity? - Answer-Direct current electrode positive (DC+) What type of power source is generally used for GMAW welding - Answer-Constant Voltage What does E stand for in ER70S-6 - Answer-electrode What does "70" stand for in ER70S-3? - Answer-tensile strength What mode of metal transfer allows for only flat/horizontal position GMAW welding - Answer-Spray What gas mixture is generally associated with...