Purely capacitive - Study guides, Class notes & Summaries

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 ...

AC Theory Practice Questions and Answers | Latest Version | 2024/2025 | Graded A+ What happens to the voltage and current in a purely resistive AC circuit? In a purely resistive AC circuit, the voltage and current are in phase, meaning they reach their maximum and minimum values at the same time. What is the role of inductance in an AC circuit? Inductance in an AC circuit opposes changes in current by creating a magnetic field that induces a voltage opposite to the applied volt...

Electrical shock can cause = Death AC is voltage or current waveform = Is called a sine wave A sine wave cycle = Is one variation of the sine wave form zero to maximum (positive) back to zero in one second is called Frequency The number of times this cycle occurs in one second = Is called frequency Frequency is expressed in = Hertz (Hz) The amplitude (range) of the sine wave is expressed as either = Voltage or current Common mathematical method of ...

Magnetic lines of force flow between _______ of a magnet - North Pole and South Pole Resistance is measured in which of the following: - Ohms In a three phase supply system, each phase is _______ with each other: - 120 degrees Power factor in a normal electrical circuit be ______: - Lagging In a series current which of the following quantity remains same: - Current Capacitors used in motors will be rated in _______: - Microfarads A 4 pole motor runs at ______ rpm: - 36...

Spring Midterm IEC Exam Questions With 100% Correct Answers. In a 60 Hertz system, the voltage will go to "0" ___ times per second? - answer120 What type of magnet is used for the coil in a relay? - answerelectromagnet ___ flow equals current flow. - answerelectron ___ law states "charged bodies attract or repel each other with a force that is directly proportional to the product of the charges and inversely proportional to the square of the distance between them." - answerCoulomb's ...

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

RCDD Practice Test Questions And Answers 100% Solved C - answerIf the input signal power to a communication system is 1 W and the output power is 1 mW, the system attenuation is: A. 3 dB B. 20 dB C. 30 dB D. 40 dB E. 1000 dB B - answerThe signal at the input to a balanced twisted pair cable is 10 mW. The cable is 1000 feet long and has an attenuation of 1 dB per 100 feet. This cable is connected to the input of a receiver. The noise level at the input to the receiver is 1 microwatt. W...

An accidental path of low resistance, allowing passage of abnormal amount of current is known as a/an ________. - ANSWERSShort Circuit. Electric current is the flow of electrons through a conductor. The rate of this flow is measured as _______. - ANSWERSCoulombs/second. The unit of electrical resistance is the _______. - ANSWERSOhm. Electric motors intended for use outside the engine room and boiler room are frequently rated to run at a designed ambient temperature of 40*C. What is the ...

G2 Gas Technician Module 12 Questions and Answers Already Passed What does an Aquastat do? Its an automatic operating switch (normally open). Sense water temperature of a boiler and closes when temperature drops. What does a low water cut off do? Automatic safety control (normally closed). Senses water level in the boiler. If level drops the switch opens and shuts off the gas valve. in series with gas valve.,What does a water flow switch do? Automatic safety control (normally open). Senses wat...

G2 Gas Technician Module 12 Revised Already Passed What does an Aquastat do? Its an automatic operating switch (normally open). Sense water temperature of a boiler and closes when temperature drops. What does a low water cut off do? Automatic safety control (normally closed). Senses water level in the boiler. If level drops the switch opens and shuts off the gas valve. What does a water flow switch do? Automatic safety control (normally open). Senses water flow and switch closes, in series wit...