Electric Study guides, Class notes & Summaries

Which of the following is true with regard to switchboards Switchboards are used to subdivide large blocks of power When installing wiring within switchgear, use self adhesive cable ties every ___. 12" (300mm) The maximum voltage that a piece of equipment can withstand is known as its ____. Basic impulse insulation level (BIL) Bolted pressure switches are often used in place of ___. Circuit breakers A transformer's temperature rise rating refers to ___. The max...

An AC circuit consists only of a pure inductance and a power source. The relationship between the voltage and the current in this circuit is that the Correct Answer current lags the voltage The power factor of a load is equal to the ____________ power divided by the ____________ power. Correct Answer True ; apparent A 10-ohms and 20-ohms resistor are connected in parallel. The total line current drawn by this parallel combination is 30 amps. Under these conditions, the line voltage will be...

Test Bank for Electricity for Refrigeration, Heating, and Air Conditioning - 10th - 2019 All Chapters - 9128

Section 1: Transducers, sensors and measuring devices -detailed information with diagrams and tables What is a thermocouple? Making a simple copper-constant thermocouple (Experiment) Investigating Thermistors Section 2: Sensing and Measuring PH meter Moisture sensor Pressure sensor

Solutions Manual for Fundamentals of Electric Circuits 6th Edition by Charles Alexander, Matthew Sadiku Chapter 1-18 Complete Guide

Light energy that is NOT absorbed by an object can be _____. - correct answer -reflected from and/or transmitted through the object A light that is considered warm in tone is produced by lamps with color temperatures of _____. - correct answer -3,000°K The resistance of a tungsten filament is ______. - correct answer -much higher after the lamp is turned on The filament of a tungsten-halogen lamp is encased in a capsule containing iodine or _____. - correct answer -bromine gas Durin...

HESI A2 ENTRANCE EXAMS ALL SUBJECT COVERED HESI A2 VERSION1 Have you ever wondered why the whistle of a traveling, distant locomotive predicts its approach several yards before anyone actually sees it? Or why an oncoming ambulance’s screaming siren is heard momentarily several feet before the ambulance comes into full view, before it passes you, and why its siren is still heard faintly well after the ambulance is out of sight? What you are witnessing is a scientific phenomenon known as ...

Which article of the NEC covers grounding? CORRECT ANSWER Article 250 What is a dropout plate? CORRECT ANSWER Metal plate with a curve surface for cable to follow as it passes from the tray All of the following are common service voltages in the United States Except: CORRECT ANSWER 372/575 3-Phase, 4-wire What does a GFCI breaker do? CORRECT ANSWER Opens a circuit to prevent operation of an electrical device What will happen when one or more coils in a winding are grounded? CORRECT A...