Impedance and reactance - Study guides, Class notes & Summaries

What is inductance? induced voltage which is opposite in direction to the applied voltage What causes opposition to the flow of applied current in ac circuits? inductive reactance and capacitance reactance What is the function of a capacitor? to store energy in a circuit (reservoir of energy) What are elements of ohms law? current, voltage and resistance How many watts equal one kilowatt? 1,000 What are 3 types of dc electrical circuits? series, parallel, series-parallel What current chang...

CET Exam 236 Questions with Verified Answers When did the first CET certification program begin? - CORRECT ANSWER 1965 When did ETA initiate certification maintenance? - CORRECT ANSWER 1996 All ETA Certification categories require the passage of the Associate CET examination. True or false. - CORRECT ANSWER False. To qualify for MASTER CET, the examinee must attain a score of 85% on each separate exam. True or false. - CORRECT ANSWER False An associate CET cannot attempt one of ...

1. Frequency is measured in which of the fol lowing : A. Voltage Watts C. Hertz D. None of the above - ANSWERc 2. For electroplating power , which of the fol lowing generators should be used : A. Separately excited B. Delta system C. Split phase D. None of the above - ANSWERa 3. Power factor is equal to which of the follow ing : A. Apparent power multiplied by true power B. True power divided by apparent power C. Watts multiplied by amps D. None of the above - ANSWE...

BICSI IN225 7.0, Installer 2, Copper 2017(BICSI IN225, Installer 2, Copper Training 7.0 Workbook and ITSIMM material) Questions and Answers Updated. Attenuation - Answer The Decrease in magnitude or power loss of a signal. Decibels, dB - Answer Unit of measurement for attenuation. American Wire Gauge (AWG) - Answer The numerical system for designating wire diameter. inverse relationship - Answer American Wire Gauge numbers have this relationship to the wire size. Balanced Twisted-Pair - A...

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 circuit 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 ferad. Why should electrolytic capacitors not be used in an AC circuit? - correct an...

AC Circuits Test 1 Questions with Revised and Updated answers Average Power in an AC circuit - Answer-Voltage squarred divided by Resitance (P = V²÷R) (P = I²×R) Capacitive Reactance - Answer-1 divided by 2 pie frequency capacitance (Xc = 1 ÷ 2πƒC) Inductive Reactance - Answer-2 pie frequency L (XL = 2πƒL) Ohm's law Resistor - Answer-Velocity divided by Current (R = V÷I) Ohm's law Capacitor - Answer-Voltage divided by Current (Xc = V÷I) Ohm's law Inductor - A...

BICSI IN225 7.0, Installer 2, Copper 2017(BICSI IN225, Installer 2, Copper Training 7.0 Workbook and ITSIMM material) Questions and Answers Updated. Attenuation - Answer The Decrease in magnitude or power loss of a signal. Decibels, dB - Answer Unit of measurement for attenuation. American Wire Gauge (AWG) - Answer The numerical system for designating wire diameter. inverse relationship - Answer American Wire Gauge numbers have this relationship to the wire size. Balanced Twisted-Pair - A...

BICSI IN225 7.0, Installer 2, Copper 2017(BICSI IN225, Installer 2, Copper Training 7.0 Workbook and ITSIMM material) Questions and Answers Updated. Attenuation - Answer The Decrease in magnitude or power loss of a signal. Decibels, dB - Answer Unit of measurement for attenuation. American Wire Gauge (AWG) - Answer The numerical system for designating wire diameter. inverse relationship - Answer American Wire Gauge numbers have this relationship to the wire size. Balanced Twisted-Pair - ...

A resistor __________________. a. stores an electric charge b. is measured in coulombs c. cause a voltage drop across it d. dependent on lines of force - Answer c. cause a voltage drop across it 1 kΩ is the same as _________. a. 1000 ohms b. .001 ohms c. 10e-2 ohms d. 10000 ohms - Answer a. 1000 ohms A resistor with color bands orange, red, brown is _____. a. 3.2 mega ohms b. 232 ohms c. 2.3 kilo ohms d. 320 ohms - Answer d. 320 ohms A circuit with 500 ohm resistor in...

underweight: <18.5 normal: 18.5-24.9 overweight: 25-29.9 obese: 30-39.9 morbid obese: >40 - Classifications of BMIs -not an indication of body composition -it may overestimate body fat in athletes and others that have a muscular build -it may underestimate body fat in older persons and other who have less muscle/bone mass - Limitations to BMIs - Health risks associated with high BMI -as harmful as obesity - Health risks associated with low BMI -densitometry -anthropometry -con...