Working voltage - 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...

What is the minimum working clearance from an electrical panel under 600 V? - ANSWERS36" Voltage drop in wire is a function of: - ANSWERSWire gauge, Length of wire, Current flow in the wire A 12-volt direct current, 13-watt fluorescent light is controlled by a photocell. The average daily on-time is 12 hours per day. How many watt-hours are consumed by the light on an average day? - ANSWERS156 Where may you use nonmetallic-sheathed cable? - ANSWERSinside floors and walls What is the...

NICET Fire Alarm Level 1 Questions and Answers Already Graded A When a device is inaccessible due to excessive height, such as an atrium, what it the maximum interval for testing? 18 months When installing a wall-mounted fire telephone appliance to the public, what is the acceptable maximum mounting height from the floor? 66 inches Elevator lobby smoke detectors shall be mounted within a maximum of which distance from the center-line of the door? 21 feet At minimum, when working near pow...

Receiving job instruction and planning equipment use are part of: a. craft data. b. job preparation. c. work factors. d. leveled time. - Answer-b. job preparation Anticipating other tasks or problems: a. usually creates additional problems. b. wastes time. c. sharply reduces the number of emergencies. d. often is not worth the effort. - Answer-c sharply reduces the number of emergencies Making job planning a group effort: a. wastes time. b. improves productivity. c. causes confus...

Before working on an electric furnace the tech should - ans-Review diagram, remove jewelry, and follow safety procedures. ALL OF THE ABOVE. A GFCI circuit breaker - ans-detects current leaks to groound the conductor in an electric heat element is usually made of - ans-Nichrome An example of resistive load is - ans-crankcase heater an example of an inductive load is - ans-motor an electric furnace is marked 208/230 single phase 60Hz A tech reads 200 vac at the p...

Medical Assisting Administrative & Clinical Competencies (MindTap Course List) 9th Edition 1 | P a g e TEST BANK FOR Medical Assisting Administrative & Clinical Competencies (MindTap Course List) 9thEdition Chapter 1 1. Medical assisting is probably right for you if you: a. like to work alone, completing tasks independently. b. are more comfortable completing a consistent task daily. c. do not like variety in your job. d. are interested in a career in an expanding field. ANSWER: d PO...

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...

Which of the following installations are NOT covered by the NEC? -Bolivar ferry boats -Sprint towers used for cell phone signal transmission -Southwest Airlines Jets such as 737's -Reliant/HLandP power lines and equipment located in property easements along streets correct answers None of the above A continuous load is any load that operates for _______. correct answers 3 hours or more The water pump motor for a coin-operated car wash would be considered to be a _____ load. correct an...

1. A contractor wants to raise the car speed from 100fpm to 125fpm, it currently has a 12" sheave. What sheave is required?: Diam=12" 12/4=3" 25fpm=3" 100fpm + 25fpm= 12"+3"= 15" sheave 2. A MOV (Metal Oxide Varistor) burns out. You replace it, but cannot read voltage or resistance. What should you do?: Replace it with a larger MOV 3. On a Ward-Leonard circuit the break is set, but the motor is trying to slip through the break. What is the issue?: Suicide Circuit 4. You have an old DC ...

What is the first thing a tech should do when arriving at a no combustion call? - Answer- Ask how many times the customer reset the unit. What is the best long term solution for preventing a clogged nozzle? - Answer- -Remove any underground storage tanks. -Install a quality oil filter. -Cut the suction line 10" above the tank outlet to prevent sludge. Hot water and steam valves are interchangeable. - Answer- False When in the presence of a flame, a cad cell normally reads.. - Answe...