Understanding Electrical Diagrams - AnytimeCE
Understanding Electrical DiagramsRV 7.11.19PLEASE DO NOT BOOKMARK ANYANYTIMECE WEBPAGES!Our system will remember the last page you viewedwhen logging out and back in but please DO NOT exitout when taking a test. Your place will NOT be saved.How to take this course.1. Download and Print the test questions.2. Login to your account with your ID andpassword.3. Viewing your status page, scroll down and click on “Click here to start this course”.4. Begin viewing the web pages. Refer to yourprinted test to find the correct answers. Thequestions track the web pages.5. As you find the answers, circle them onyour printed copy.6. At the end of each section, you’ll enter thequiz which is the same as your printed test.Refer to your circled answers when actuallyanswering the quiz on the web.7. Upon passing, you will proceed to the next section. If failed to pass, you will bemoved to the beginning of that section for more review. Mobile users – Many current mobile devices are compatible with AnytimeCE and willprobably work. If not, use a desktop or laptop computer to complete your course. WA. Electricians – WA L&I require all online test questions and answers to berandomized. Be sure to answer all of the test questions on your printed copy. Quiz 1: WAElectricians: Answer all questions- 50% of the following will appear in randomorder with random answers -as required byWA LNID. SchematicE. Only A and D are types of electrical wiringdiagrams3. A ladder diagram is also known as a. Stick Line Pictorial Schematic1. Which of the following is NOT part of thebasic circuit? Load Source of power Conductors Fuse Switch4. To determine the relative physical position ofthe electrical components of a system, onewould use a diagram. stick line schematic ladder2. Which of the following is NOT a type ofelectrical wiring diagram? A. Stick B. Line C. Pictorial1
Understanding Electrical DiagramsRV 7.11.197. Electricity can be understood by comparingit to a closed loop hydraulic system. In thismodel, power voltage is similar to . water pressure in PSIG water flow in GPM resistance to flow in head loss pipes5. Electricity can be understood by comparingit to a closed loop hydraulic system. In thismodel, amps are similar to . water pressure in PSIG water flow in GPM resistance to flow in head loss pipes8. Electricity can be understood by comparingit to a closed loop hydraulic system. In thismodel, the rating of an electrical wire issimilar to . water pressure in PSIG water flow in GPM resistance to flow in head loss pipes6. Electricity can be understood by comparingit to a closed loop hydraulic system. In thismodel, ohms are similar to . water pressure in PSIG water flow in GPM resistance to flow in head loss pipes9. Which of the above illustrations shows a series circuit?12310. Which of the above illustrations shows a parallel circuit?12311. Which of the above illustrations shows a series-parallel circuit?12312. A CONDUCTOR usually means a wire. True FalseQuiz 2 : WA Electricians: Answer allquestions - 50% of the following will appearin random order with random answers -asrequired by WA LNI1. A battery generates . direct current alternating current pulse current reversed Sine Wave current13. A LOAD is a device that generates electricalpower. True False14. An example of a LOAD would be .a lighta motoran AC compressora resistance heaterall of the answers provided2. 2A portable generator makes .direct currentalternating currentpulse currentreversed Sine Wave current
Understanding Electrical DiagramsRV 7.11.19 12020824010. On a DELTA voltage system, the expectedvoltage between each leg would bevolts. 110 120 208 2403. Which of the above symbols is used forelectricity generated by a battery? 1 2 3 4 511. On a DELTA voltage system, the expectedvoltage between a leg and Neutral (N) wouldbe volts. 110 120 208 2404. Which of the above symbols is used forelectricity generated by a mechanicaldevice? 1 2 3 4 512. A transformer can do each of the followingEXCEPT . increase AC voltage decrease AC voltage convert AC voltage to DC voltage isolate AC voltage5. At the power generation station, a/ntransformer is used. isolation step-up step-down6. At a sub-station near the end user, a/ntransformer is used. isolation step-up step-down13. A transformer that electrically isolates thepower source from the electrical equipmentis called a/n transformer. isolation step-up step-down multi-tap7. At a sub-station, the types of transformersused would be . wye star delta any of the answers provided14. The transformer described in question 13has coils or windings on the primaryside compared to the secondary side. the same number of more fewer8. On a WYE voltage system, the expectedvoltage between each leg would bevolts. 110 120 208 24015. A transformer that decreases the voltagebelow the voltage level of the power sourceis called a/n transformer. isolation step-up step-down multi-tap9. On a WYE voltage system, the expectedvoltage between a leg and Neutral (N) wouldbe volts. 11016. The transformer described in question 15has coils or windings on the primaryside compared to the secondary side. the same number of3
Understanding Electrical DiagramsRV 7.11.19 morefewer 17. A transformer that increases the voltageabove the voltage level of the power sourceis called a/n transformer. isolation step-up step-down multi-tapused with a variety of different primary linevoltages is called a/n transformer.isolationstep-upstep-downmulti-tap20. The transformer described in question 19has coils or windings on the primaryside compared to the secondary side. the same number of more fewer18. The transformer described in question 17has coils or windings on the primaryside compared to the secondary side. the same number of more fewer21. A control voltage of 24 volts is generallypreferred because . it requires smaller-sized wires it can be powered by small batteries it is safer in case someone touches it the parts and equipment are cheaper formanufacturers to produce19. A transformer that has a number of taps orcoils on the primary side that allow it to be22. An isolation transformer is shown in which of the above numbered illustrations?123423. A step-up transformer is shown in which of the above numbered illustrations?123424. A step-down transformer is shown in which of the above numbered illustrations?123425. A multi-tap transformer is shown in which of the above numbered illustrations?12344
Understanding Electrical DiagramsRV 7.11.19Quiz 3: : WA Electricians: Answer all questions - 50% of the following will appear in random orderwith random answers -as required by WA LNI1. Which of the above is the symbol for FieldLine Voltage? 2 4 6 8 106. Which of the above is the symbol for ButtSplice Connector? 1 2 4 5 82. Which of the above is the symbol for FieldLow Voltage? 1 3 4 5 77. Which of the above is the symbol for WiredCross and Connected? 1 3 5 6 103. Which of the above is the symbol for FactoryLow Voltage? 1 3 5 7 98. Which of the above is the symbol for WiredCross and NOT Connected? 2 3 5 7 94. Which of the above is the symbol for FactoryLine Voltage? 1 2 4 6 99. Which of the above is the symbol forEquipment Ground? 2 7 8 9 105. Which of the above is the symbol for Markedor Flagged Line? 3 4 5 7 1010. Which of the above is the symbol for aMolex Plug Connection? 2 4 6 8 105
Understanding Electrical DiagramsRV 7.11.19Quiz 4: : WA Electricians: Answer all questions - 50% of the following will appear in random orderwith random answers -as required by WA LNI 8 96. Which of the above symbols represents arun or start capacitor? 1 2 3 4 51. Which of the above symbols represents anindicator light? 4 5 6 7 82. Which of the above symbols represents aresistance heater? 1 2 3 4 57. Which of the above symbols represents aPSC motor? 1 2 3 4 53. Which of the above symbols represents anadjustable rheostat? 2 4 6 7 98. Which of the above symbols represents a 3phase motor? 2 4 6 8 104. Which of the above symbols represents ashaded pole motor? 1 2 3 4 59. Which of the above symbols represents asolenoid? 1 2 3 4 55. Which of the above symbols represents acapacitor start motor? 5 6 710. The primary force that moves a solenoid coilis . magnetic energy6
Understanding Electrical DiagramsRV 7.11.19 potential energykinetic energynone of the answers providedQuiz 5: : WA Electricians: Answer all questions - 50% of the following will appear in random orderwith random answers -as required by WA LNI 1. Which of the above symbols represents astart-stop button? 1 4 6 7 83455. Which of the above symbols represents asingle pole, single throw switch? 4 5 6 7 82. Which of the above symbols represents asingle pole, double throw switch? 1 3 5 7 86. Which of the above symbols represents afoot switch? 4 5 6 7 83. Which of the above symbols represents adouble pole, single throw switch? 2 4 6 7 87. Which of the above symbols represents arotary switch? 1 2 3 4 54. Which of the above symbols represents adouble pole, double throw switch? 1 27
Understanding Electrical DiagramsRV 7.11.19Quiz 6: : WA Electricians: Answer all questions - 50% of the following will appear in random orderwith random answers -as required by WA LNI1. Bi-metal .consists of 2 metals with different expansion rates welded togetheris used to sense temperature changescan be wound in a spiralall of the answers providednone of the answers provided 7. 2. Which of the above symbols is thecommonly shared symbol for alltemperature-controlled devices? 4 5 6 7 83. Which of the above symbols represents aSPST temperature switch in the closedposition? 1 2 3 4 52345A Klixon control is mounted .A. internally in a motorB. externally on a motorC. never on a motorD. Both A and B8. A Klixon control switch could also be used toprevent overheating of resistant heaters onan electrical furnace. True False9. A basic heat/cool thermostat has how manyswitches? 1 2 3 44. Which of the above symbols represents aSPST temperature switch which closes ontemperature rise? 1 2 3 4 510. On a basic thermostat, the coloredwire from the thermostat connects to theIndoor Blower Motor Relay coil. red green yellow white5. Which of the above symbols represents aSPDT temperature switch? 1 2 3 4 511. On a basic thermostat, the coloredwire from the thermostat connects to theCompressor Contactor coil. red green yellow white6. Which of the above symbols represents aKlixon control? 18
Understanding Electrical DiagramsRV 7.11.1912. On a basic thermostat, the coloredwire from the thermostat connects to theHeating Sequencer coils. red green yellow white13. On a basic thermostat, the coloredwire from the thermostat connects to theGround. red green yellow white none of the answers provided 4820. A thermistor is used to measure .temperaturepressureconductivityampsvoltage21. Which of the symbols shown in theillustration located above Question 2represents a thermistor? 4 5 6 7 814. On a basic thermostat, a Cooling Anticipatoris energized on a Call for Cooling. True False15. On a basic thermostat, a Heating Anticipatoris energized on a Call for Heating. True False16. Fluid or gas filled temperature activatedcontrols have expanding bellows whichmake contacts. True False22. PTC means .Positive Temperature CoefficientPermanent Transparent CategoryPoly Temperature CachePositional Transference Coefficient23. NTC means .Not to Be CopiedNegative Temperature CoefficientNeutral Transference CoefficientNatural Transfer Cache24. A/n type of thermistor can be usedin lieu of starting components in an electricmotor. CSCR PSC PTC NRA17. The Heat Anticipator is an adjustableresistor. True False18. The Cooling Anticipator is an adjustableresistor. True False25. The thermistor removes the start windingsfrom the circuit by increasing the windings’resistance. True False19. There are types of thermistors. 2 39
Understanding Electrical DiagramsRV 7.11.19Quiz 7: : WA Electricians: Answer all questions - 50% of the following will appear in random orderwith random answers -as required by WA LNI 1. Which of the above symbols represents aN.C. open on pressure rise control? 1 2 3 4 523457. Which of the above symbols represents aMotion Limit switch? 6 7 8 9 102. Which of the above symbols represents aN.C. open on pressure decrease control? 6 7 8 9 108. Which of the above symbols represents aDelay on Break switch? 6 7 8 9 103. Which of the above symbols represents aSPDT pressure switch? 6 7 8 9 109. Which of the above symbols represents aDelay on Make switch? 1 2 3 4 54. Which of the above symbols represents aSPST pressure differential switch? 6 7 8 9 1010. 5. Which of the above symbols represents aFloat switch – close on rise of fluid? 1 2 3 4 5A sequencer .has a 24-volt heater (typical)has one or more Delay On Make switchesusually has N.O. contactsall of the answers provided11. A Time Delay Electronic Relay is typicallywired in series to the control coil of the relayor contactor. True False6. Which of the above symbols represents aFloat switch – open on rise of fluid? 112. Electronic Time Delay Relays are alwaysnon-adjustable.10
Understanding Electrical DiagramsRV 7.11.19 20. A Magnetic Circuit Breaker acts like a Fuse,except that it can be reset. True FalseTrueFalse13. A Delay on Make would likely control theindoor blower motor in the heating mode. True False21. A Magnetic Circuit Breaker reacts toincreases in a magnetic field due to currentflow. True False14. A Delay on Make would likely control theblower on a Heat Pump or Air Conditioningsystem. True False22. A Humidistat responds to the amount ofmoisture in the air. True False15. A Delay on Break would likely be found onan indoor blower motor in the heating mode. True False23. A Humidistat can either close on humidityincrease or open on humidity increase. True False16. All Time Delays are manufactured with botha Delay on Make and a Delay on Breakfunction incorporated in a single controldevice. True False24. A Sail switch is used aboard watercraft. True False25. A Flow switch is used to verify the speed ofa boat or ship. True False17. The purpose of a Fuse is to limit the currentflow to a system. True False26. An Enthalpy control measures both airtemperature and humidity. True False18. Most Fuses have a non-melting internalmetal strip. True False27. An Enthalpy control is used in aneconomizer for “free” outdoor air cooling. True False19. Most Fuses cannot be reset. True False 28. Which of the above symbols represents aFuse? 1 2 3 4 51234530. Which of the above symbols represents aHumidistat? 129. Which of the above symbols represents aMagnetic Circuit Breaker?11
Understanding Electrical DiagramsRV 7.11.19 2345TrueFalse7. The overload in a magnetic starter is alsoknown as the . cooler protector heater warmer31. Which of the above symbols represents aSail switch? 1 2 3 4 58. A mag-starter is like a contactor except it. has magnesium on the contact pointsinstead of silver is only used for single-phase operations has built-in overload protectors must be mounted in a vertical position32. Which of the above symbols represents anEnthalpy control? 1 2 3 4 59. In a mag-starter, if one overload protectorfails, the two remaining protectors will carrythe load. True FalseQuiz 8: : WA Electricians: Answer allquestions - 50% of the following will appearin random order with random answers -asrequired by WA LNI10. Overload protectors would open up or tripbecause of . excessive current draw on at least 1-linevoltage leg excessive current draw on at least 2-linevoltage legs excessive current draw on at least 3-linevoltage legs none of the answers provided1. A contactor uses a solenoid coil to initiatemechanical movement. True False2. A contactor may have one or more sets ofcontacts. True False3. The load carrying contacts in a contactor arenormally . open closed11. In normal operation, the overload protectorconnections are . closed opened4. The voltage of the contactor coil is usuallyshown on the coil. True False12. The maximum load that a relay can usuallycarry is amps @ 120 volts. 5 12 16 205. The control voltage of a coil could be. 24 volts 120 volts 240 volts any of the answers provided13. A relay uses a solenoid coil to activate amechanical pivotal arm. True False14. A relay can have more than one set ofswitches and each switch can be eitherSPST or SPDT.6. A contactor with built-in overloads is knownas a Magnetic Starter.12
Understanding Electrical DiagramsRV 7.11.19 TrueFalse15. Incoming power connections on a relay areusually terminals . 1 and 4 2 and 5 3 and 6 the unmarked contacts1 and 21 and 32 and 3the unmarked contacts18. The terminals used for the coil contacts are. 1 and 4 2 and 5 3 and 6 the unmarked contacts16. N.O. contacts on a relay are betweenterminal numbers . 1 and 2 1 and 3 2 and 3 the unmarked contacts19. The coil voltage for a relay can be .24 volts120 volts240 voltsany of the answers provided TrueFalse17. N.C. contacts on a relay are betweenterminal numbers .Quiz 91. In a ladder diagram, the power legs form theof the ladder. rails rungs hooks handles5. The HLC also closes its contacts when thetemperature is too hot. True False2. Usually Line 1 (or L1) is on the left-handside of the diagram. True False3. 6. In a ladder diagram, the loads for theof the ladder. rails rungs hooks handles7. The lower element is connected inwith the upper element. series parallel series/parallelThe HLC refers to .High Limit ControlHot Limit ControlHigher Light ControlHot Liquid Control4. On a water heater, the HLC operates as anover-temperature safety control.13
Understanding Electrical DiagramsRV 7.11.198. The lower element is energized only when. A. the upper thermostat is hot B. the lower thermostat is cold C. both A and B D. neither A or B10. The lower thermostat in a water heater is a/nswitch. SPST SPDT DPST DPDT9. The upper thermostat in a water heater isa/n switch. SPST SPDT DPST DPDT11. The HLC is a/n switch.SPSTSPDTDPSTDPDTQuiz 10 : WA Electricians: Answer all questions - 50% of the following will appear in random orderwith random answers -as required by WA LNI 1. It is common to show a switch on the rightside of the load. True Falseseries/parallel5. The High Limit Control is in with thestrip heater. series parallel series/parallel2. The On/Off switch is in with thethermostat. series parallel series/parallel3. The fan motor is in with thethermostat. series parallel series/parallel6. The fan only comes on when the thermostatis . open closed neither – it is not connected to thethermostat4. The fan motor is in with the stripheater. series parallel7. The following are 24-volt controls orsafeties: On/Off Switch thermostat14
Understanding Electrical DiagramsRV 7.11.19 HLCthere are no 24-volt controls8. Line locator numbers are usually shown.on the left side of the wire diagramon the right side of the wire diagramacross the bottom of the wire diagramacross the top of the wire diagramQuiz 11: : WA Electricians: Answer all questions - 50% of the following will appear in random orderwith random answers -as required by WA LNI1. The transformer in the above diagram isused to
basic circuit? Load Source of power Conductors Fuse Switch the electrical components of a system, one 2. would use a _ diagram.Which of the following is NOT a type of electrical wiring diagram? A. Stick B. Line C. Pictorial D. Schematic E. Only A and D are types of electrical wiring diagrams 3.
a time period. There are seven behavioral diagrams: Use Case Diagrams, Activity Diagrams, State Machine Diagrams, Communication Diagrams, Sequence Diagrams, Timing Diagrams and Interaction Overview Diagrams. UML 2 has introduced Composite Structure, Object, Timing and Interaction Overview diagrams.
node diagrams (N diagrams), node-link diagrams (NL diagrams) and node-link-groups diagrams (NLG diagrams). Each of these diagrams extends the previous one by making more explicit a characteristic of the input data. In N diagrams, a set of objects is depicted as points in a two or three dimensional space; see Figure1a. Clusters are typically .
Class Diagrams etc. (e.g. Component Diagrams) Dynamic / Behavioral Modeling: capturing execution of the system Use Case Diagrams Sequence Diagrams State Chart Diagrams etc. (e.g. Activity Diagrams) UML Diagrams Models: high-level class relations Components: Class (rectangle) - Upper section: name of the class
wiring your motor p.06 9.1 nema three-phase wiring diagrams p.07 9.1.1 nema brake motor wiring diagrams p.08 9.2 iec three-phase wiring diagrams p.09 9.2.1 iec brake motor wiring diagrams p.10 9.3 nema farm duty wiring diagrams p.11 9.4 nema single-phase wiring diagrams p.12 9.5 iec single-phase wir
Use Case Diagrams Sequence Diagrams Questions Use Case Diagrams & Sequence Diagrams SE3A04–Tutorial JasonJaskolka Department of Computing and Software Faculty of Engineering McMaster University Hamilton, Ontario, Canada jaskolj@mcmaster.ca October14/15,2014 Jason Jaskolka
Lewis dot diagrams In grade 9, you learned how to represent the atom by using Bohr Diagrams. Since Bohr diagrams can be a bit cumbersome to draw, we can use a shorter, more convenient notation. Lewis Dot Diagrams (Electron Dot Diagrams) A Lewis dot diagram is a way to represent an element and its VALENCE electrons.
There are three ways to show electrical circuits. They are wiring, schematic, and pictorial diagrams. The two most commonly used are the wiring diagram and the schematic diagram. The uses of these two types of diagrams are compared in Table 1. TABLE 1 Comparison Between Wiring and Schematic Diagrams Wiring Diagrams Schematic Diagrams 1.
Coronavirus conspiracies Notable minorities of the population have conspiracy suspicions about coronavirus, ranging from the relatively mild – such as that “people need to wake up and start asking questions about the pandemic”’ (believed by 41%) – to the more extreme, including that “reporters, scientists, and government officials are involved in a conspiracy to cover up important .
