Alternating voltage - Study guides, Class notes & Summaries
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CWB Level 2 Study Modules 4-5-6-7-8-9-12-17-18-19-22 Questions and Answers Rated A
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CWB Level 2 Study Modules 4-5-6-7-8--22 Questions and Answers Rated A 
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? 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 cur...
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MEP Systems I Electrical Exam –Houston Questions And Answers With Verified Tests
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______-phase AC Voltage is a combination of three alternating voltage waveforms, each displaced by 
120 electrical degrees (1/3 Cycle) apart. (21-457) - Three 
______-phase AC Voltage only contains one alternating voltage waveform. (21-457) - One 
A ____ ________ fuse can be reset after an overload and reused. (20-440) - Circuit Breaker 
A British Thermal Unit is the amount of heat needed to do what? (21-461) - Raise 1 pound of 
water 1 Fahrenheit 
A calorie is the amount of heat needed to do wh...
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ABRET EEG Exam Review Questions With All Correct Answers (100% Verified)
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The basic unit for measuring current flow is 
c weight 
b.CouIomb 
c.VoIt 
d.Ampere - Ampere 
The basic unit of resistance is 
a.Ohm 
b.CouIomb 
c.Ampere 
d.V01t - Ohm 
Which of the following is not a valid expression of Ohm's law? 
(in this equation E (electromotive force) is the dame as V (Voltage) 
 
Which of the following is not a unit for measuring alternating frequencies? 
a.	Cycles per second 
b.	Volts 
c.	Hertz 
d.	Kilocycles - Volts 
Which of the following describes the action of a c...
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NCCER 26201 : Alternating Current - Electromagnetic Induction - (AC) Circuits Exam Test Combined Questions With Revised Correct Answers BEST UPDATED COMBINED SET!!
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NCCER 26201 : Alternating Current - Electromagnetic Induction - (AC) 
Circuits 
Exam Test Combined Questions 
With Revised Correct Answers 
BEST UPDATED COMBINED SET!! 
 
20. according to the power triangle, the apparent power 
is ______. - ANSWER 
(C) greater than the true power 
21. which of the following uses electromagnetic 
inductions to transfer electrical energy from one circuit 
to another. - ANSWER 
(C) Transformer 
22. given: a Transformer has 200 turns in the pri...
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NETA 2 Top Exam Questions and answers, rated A+
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NETA 2 Top Exam Questions and answers, rated A+ 
 
 
Under what considerations can tag out without lock out be permitted? - -***&If an energy isolating device is not capable of being locked 
 
For PV systems, a(n) _____ is a device that changes direct-current input to an alternating-current output. - -Inverter 
 
Identify the contact pictured above. (NC and NO separated by a node) - -Form C 
 
When applying personal protective grounds, which end is attached first? - -***&The equipment end 
 
An ...
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BAKER'S A&P ORAL AND PRACTICAL STUDY GUIDE GENERAL SECTION
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What is the most important law applicable to the study of electricity? - Answer-Ohm's Law (V = I x R) 
 
What are the elements of Ohm's Law? - Answer-Voltage (v), Current (I), Resistance (R) 
 
What are 4 sources of electrical power? - Answer-Mechanical (generator/ alternator), Chemical (battery), Photoelectric (light), and Thermal (heat) 
 
What does an electrical circuit consist of? - Answer-A source of electrical pressure (EMF), Resistance in the form of an energy consuming electrical devic...
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CWB Level 2 Study Questions rev 1 WITH 100% CORRECT ANSWERS
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CWB Level 2 Study Questions rev 1 WITH 100% CORRECT ANSWERS 
 
 
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 voltage. 
C. the current flowing in each parallel path depends on the resistance in each path 
D. the current flowi...
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General A&P General questions with correct answers
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The working voltage of a capacitor in an AC circuit should be CORRECT ANSWER at least 50 percent greater than the highest applied voltage 
 
The term that describes the combinded resistive forces in an AC circuit is CORRECT ANSWER impedance 
 
What is the opposition to the flow of AC produced by a magnetif field with generated back voltage (EMF) called? CORRECT ANSWER Inductive reactance 
 
Electrostatic fields are known as CORRECT ANSWER electrostatic fields 
 
The basis for transformer operati...
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Review Master Electrician (Part 2) Questions and Answers 100% Correct
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The ordinary direct current series motor does not operate satisfactorily with alternating 
current. One of the main reasons for this is 
 
a. excessive heating due to eddy currents in the solid parts of the field structure 
b. that the armature current and field current are out of phase with each other 
c. that the field flux lags 120 in time phase with respect to the line voltage 
d. excessive heating due to the low voltage drop in the series field - ANSWER-a. excessive heating due to eddy curr...
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DMIR 1121 Final || All Correct.
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What is the name of the process that changes alternating current into direct current? correct answers Rectification 
 
What is the most accurate type of timer? correct answers Electronic 
 
Where in the x ray circuit is the timer circuitry located? correct answers Between the auto transformer and the step up transformer 
 
What is the advantage of three phase equipment over single phase equipment? correct answers Can achieve shorter exposure times 
 
The spinning top test can be used to determin...
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