Rms effective voltage - Study guides, Class notes & Summaries

GROL Element 3: Complete Study Guide and Practice Questions for General Radiotelephone Operator License The product of the readings of an AC voltmeter and AC ammeter is called: Apparent power What is the term used to express the amount electrical energy stored in an electrostatic field? Joules What formula would determine the inductive reactance of a coil if frequency and coil inductance is known? Xl=2pi(fL) What determines the strength of a magnetic field around a conductor? The am...

FCC Grol element 3 Test Questions And Answers What is the basic unit of electrical power? A. Ohm B. Watt C. Volt D. Ampere - ANSWER- B. Watt What is the term used to express the amount of electrical energy stored in an electrostatic field? A. Joules B. Coulombs. C. Watts. D. Volts - ANSWER- A. Joules What will produce a magnetic field? A. DC source not connect to a circuit B. The presence of a voltage across a capacitor. C. A current flowing through a conductor. D. The force ...

Electrical 2 module 1 Exam Questions An Answers The hertz rating of a ac circuit is __ if the frequency is 20 cycles per 1/2 second - ANS 40 hertz A circuit has an rms voltage of 120vac, the peak voltage is? - ANS 170v The turns ratio of a transformer with 200 turns into primary and 100 turns in the secondary is __ - ANS 2:1 Opening the secondary of a CT (current transformer) underload will cause? - ANS Dangerously high voltages A circuit has a peak voltage of 275 V the av...

What are the two types of current use din the heating, cooling and refrigeration industries? AC (mostly) DC _____ current flows in only one direction. DC _____ current flows in alternating directions. AC What are the advantages of AC current over DC current? 1) cheaper 2) easier to produce 3) easier to transform from one voltage to another How is AC produced? by cutting through the magnetic field with a conductor What is a sine wave? a graphical representation o...

AC CIRCUIT FINAL TEST QUESTIONS WITH REVISED ANSWERS The effective value - Answer-Value of alternating current is the amount that produces the same degree of heat in a given resistance as an equal amount of direct current. It is also referred to as RMS value. Two complete alternations of voltage with no reference to time make up a... - Answer-Cycle The unit of frequency is the... - Answer-hertz The the relationship between the frequency and the period of a sine wave is expressed as......

The electrical NCCER test Questions and Answers 100% Accurate Which Article of the NEC covers grounding? article 250 Which of the following is a 90 degree, explosion proof fitting? GUAL What is a dropout plate? Metal plate with a curved surface for cable to follow as it passes from the tray All of the following are common service voltages in the United States EXCEPT: 372/575 3-PHASE, 4-WIRE What does a GFCI breaker do? Opens a circuit to prevent operation of an ...

Which article of the NEC covers grounding? Article 250 What is a dropout plate? 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: 372/575 3- Phase, 4-wire What does a GFCI breaker do? Opens a circuit to prevent operation of an electrical device What will happen when one or more coils in a winding are grounded? The motor will automatically blow fuses eight incandescent lighting fix...

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 ...

Electricity produced by magnetism is ______ CORRECT ANSWER AC the intensity of current produced by a conductor moving through a magnetic field is determined by the ______ at which the line of flux are cut CORRECT ANSWER rate one complete sequence of events in alternating current consisting of starting a stopping the current in both directions is called one ______ CORRECT ANSWER cycle when electricity is to be carried for long distances over a power line, its ______ is stepped up to a hi...

What is the basic unit of electrical power? A. Ohm B. Watt C. Volt D. Ampere - ANSWER- B. Watt What is the term used to express the amount of electrical energy stored in an electrostatic field? A. Joules B. Coulombs. C. Watts. D. Volts - ANSWER- A. Joules What will produce a magnetic field? A. DC source not connect to a circuit B. The presence of a voltage across a capacitor. C. A current flowing through a conductor. D. The force that drives current through a resistor. - ANSWER- C...