What is capacitance - Study guides, Class notes & Summaries

In capacitors, what is the purpose of the dielectric? - Prevent arcing within the capacitor Which of the following is true about capacitors in AC circuits? - Current leads voltage all the time What describes a capacitor s ability to store an electrical charge? - Capacitance which of the following statements is correct about polarized electrolytic capacitors? - Voltage polarity must be correct What is the time constant for a circuit with 150k ohms and 2 microfarad capacitor? - .3 seco...

BICSI - Installer 1 – Exam Review | 120 Questions | 100% Correct Answers B A third 90-degree bend may be permitted in a conduit run if the run does NOT exceed ______? A 5 m (16.5') B 10 m (33') C 15 m (50') D 30 m (100') C Which of the following is a property of an electromagnetic field built around a conductor that opposes any changes in current flow in a circuit? A Impedance B Capacitance C Inductance D Resistance A Which of the following markings is used for non-co...

BICSI - Installer 1-Exam Review (Complete 120 Questions With 100% Correct Answers A third 90-degree bend may be permitted in a conduit run if the run does NOT exceed ______? A 5 m (16.5') B 10 m (33') C 15 m (50') D 30 m (100') [correct Ans: - B Which of the following is a property of an electromagnetic field built around a conductor that opposes any changes in current flow in a circuit? A Impedance B Capacitance C Inductance D Resistance [correct Ans: - C Which of...

Associate CET 6th guide Exam Questions And Answers All Verified 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 - ANS 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 - ANS 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....

Level 2 Module 1 Alternating Currents 2:1 What is the step-down turns ratio of a transformer with 200 turns in the primary and 100 turns in the secondary? induced high voltage Opening the secondary of a CT under load will cause a dangerous level of___. 40Hz What is the hertz rating of an AC circuit if the frequency is 20 cycles per 1/2 second? 340V Given: A circuit has an rms voltage of 120VAC. What is the peak-to-peak voltage? 175V A circuit has a peak voltage of 275V....

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...

During arc welding there is a zone adjacent to the weld metal that reaches high temperatures but does not melt. What is the name of this region? ANSWER-Heat Affect Zone (HAZ) In parallel electrical circuits, the voltage across each resistor is the same since each path is connected to the same voltage source. Select the correct statement. A. in each parallel path the resistance must be equalized to create equal voltage. B. the current flowing in each parallel path must be the same as the vo...

Associate CET practice Exam Questions and Answers (2024) 100%Correct Solution. 8.33 meters is the full wavelength in air for what RF frequency? Answer- 36 MHz Decimal 164 would appear as ________ in binary? Answer- A resistor has color stripes yellow, violet, violet, silver. It is: Answer- 470 MegOhm +/- 10% what is the total capacitance of three capacitors valued at 100pf, 100pf, and 50pf when connected in a series? Answer- 25 pf what is the ripple frequency of a full wave single phase ...

XC - correct answer ______ is the letter(s) used to indicate capacitive reactance in a circuit. A) XL, B) Z, C) HZ, D) XC Conductors drawn from a copper-clad aluminum rod with the copper metallurgically bonded to an aluminum core. The copper forms a minimum of ________ percent of the csa. - correct answer 10 Relay contacts are made of ___________. - correct answer Silver Defined apparatus - correct answer The organization or system used for doing or operating something Operation o...

NCCER 26201-20 ALTERNATING CURRENT QUESTIONS AND ANSWERS FULLY SOLVED An electric current always produces ? A magnetic field The number or cycles an alternating electric current undergoes per second is known as ? Frequency What is the peak voltage in a circuit with an RMS voltage of 120 VAC ? 170 VAC Wich of the following conditions exist in a circuit of pure resistance ? The voltage and current are in phase In a purely resistive AC circuit where 240v is applied ...

CETA Study Guide Questions With All Complete Solutions 8.33 meters is the full wavelength in air for what RF frequency? - ANSWER- 36 MHz Decimal 164 would appear as what in binary? - ANSWER- A resistor has color stripes yellow, violet, violet, silver. It is? - ANSWER- 470 MegOhm +/- 10% What is the total capacitance of three capacitors valued at 100uf, 100uf and 50uf when connected in series? - ANSWER- 25 pf What is the ripple frequency of a full wave single phase bridge rectif...

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...