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CWEA ELECTRICAL AND INSTRUMENT STUDY
GUIDE 2026 ACTUAL QUESTIONS WITH SOLUTIONS
GRADED A+ GUARANTEED PASS
● Anticipating other tasks or problems: a. usually creates additional problems. b. wastes time. c. sharply reduces the number of emergencies. d. often is not worth the effort. Answer: c sharply reduces the number of emergencies ● Making job planning a group effort: a. wastes time. b. improves productivity. c. causes confusion. d. All the above Answer: b improves productivity ● Rubber safety gloves should be tested how often? a Every 12 months b. Every 9 months
c. Every 6 months d. Every 4 months Answer: a Every 12 months ● Rubber safety blankets should be tested how often? a. Every 6 months b. Every 9 months c. Every 12 months d. Every 18 months Answer: b Every 9 months ● What is the interrupting current of a GFIC receptacle? a. 20 VAL b. 5 MA c. 10 UDL d. 20 MA Answer: b 5 MA ● What type of stepladder is forbidden while working on electrical equipment? a. Wood b. Fiberglass c. Aluminum d. Ceramic Answer: c Aluminum
a. potential difference. b. battery. c. thermocouple. d. resistance Answer: a potential difference ● A coil of wire that carries an electric current is called a: a. conductor. b. thermocouple. c. electrocurrent. d. electromagnet Answer: d electromagnet ● Metals are good conductors because they have many: a. insulators. b. free electrons. c. resistors. d. inductors. Answer: b free electrons ● The amount of potential difference a layer of insulation can withstand without breaking down is: a. resistance.
b. Voltage Drop. c. Dielectric Strength. d. Ampacity Answer: C Dielectric Strength ● What Is The Property Of A Coil Of Wire That Opposes Any Change In The Current In The Coil? a. Inductance b. Resistance c. Impedance d. Watts Answer: A Inductance ● What Is The Correct Name For "Voltage" Or Electromotive Force? a. Element b. Electron c. Circuit d. Potential Difference Answer: D Potential Difference ● A Rate Of Flow Of One Coulomb Per Second Is Called One: a. Ampere. b. Joule. c. Volt.
● What Device Changes Alternating Current To A Different Combination Of Voltage And Current? a. Generator b. Capacitor c. Alternator d. Transformer Answer: D Transformer ● How Does The Power Going Into A Transformer Compare To The Power Coming Out? a. Lower b. Equal c. Double d. Higher Answer: B Equal ● What Changes Continuously Around The Conductor When Current Changes Continuously In Ac Circuits? a. Voltage b. Current c. Magnetic Field d. Amps Answer: C Magnetic Field
● Wires And Cables Can Be Classified According To Their: a. Color. b. Size. c. Covering. d. Shape. Answer: C Covering. ● What Kind Of Starter Provides Full-Voltage Starting? a. Across-The-Line b. Synchronous Start c. Reactor Starter d. Reduced-Voltage Start Answer: A Across-The-Line ● The Choice Between Across-The-Line Starting And Reduced-Voltage Starting Depends In Part On The Size Of The: A. Starter. b. Wire Size. c. Motor. d. Breaker. Answer: C Motor. ● The Most Important Requirement For Good Maintenance Of Motor Starters Is:
b. Motor Starters. c. Overcurrent Relays. d. Circuit Breakers. Answer: D Circuit Breakers. ● Distribution Protection Usually Consists Of Two Elements, Protection Of Both: a. Equipment And Circuit. b. Personnel And Equipment. c. Wire And Control Relay. d. Ground Fault And Current. Answer: A Equipment And Circuit ● What Is The Current In Amperes Of A 120 - Volt Circuit With A Resistance Of 60 Ohms, Using Ohm's Law? a. 0.5 Amperes b. 2.0 Amperes c. 30 Amperes d. 10 Amperes Answer: B 2. Amperes Solving For I: I = Er Substituting Values Into The Equation: I = 120 Volts/60 Ohms = 2 Amperes
● What Is The Current For A 120 - Volt Circuit With A 1440-Watt Load? a. 0.083 Amperes b. 10 Amperes c. 12 Amperes d. 15 Amperes Answer: C 12 Amperes Since P = Ei, Current Can Be Determined As I = P/E Substituting Values Into The Equation: I = 1440 Watts /120 Volts = 12 Amperes ● What Is The Current Of A Circuit That Consumes 625 Watts Through A 12.75-Ohm Resistor? a. 3.8 Amperes b. 7 Amperes c. 49 Amperes d. 175 Amperes Answer: B 7 Amperes E = Ir And P = Ei Substituting The First Equation Into The Second: P = (Ir)I P = I Squared X R Solving For I: I Squared = P / R I = Sqrt P/R
Where I Is The Current. I = 12 X 1.000 / 230 X 0.84 = 62 Amperes ● The Difference Between The Measurement Signal And The Set Point Is Called The: a. Gap. b. Error. c. Feedback. d. Span. Answer: B Error ● The Signal Pressure Is Usually Directly Proportional To The Process: a. Span. b. Level. c. Variable. d. Loop. Answer: C Variable ● Offset Is The Difference Between The Actual Maintained Value Of The Measured Variable And: a. The Set-Point. b. The Span. c. Zero.
d. The Level. Answer: A The Set-Point ● Another Name For Built-In Error That Usually Occurs In A Proportional Control System Is: a. Deadband. b. Offset. c. Set Point. d. Span. Answer: B Offset ● An Automatic Controller Always Compares A Measured Variable To: a. Zero. b. Span. c. Reset. d. Set Point. Answer: D Set Point. ● The Specific Value At Which An Automatic Control Holds A Process Variable Is Called The: a. Span. b. Variable. c. Control Point. d. Set Point. Answer: C Control Point
Is Called: a. Zero. b. Correcting. c. Span. d. Feedback. Answer: D Feedback. ● In A Closed Loop Control System, The Control Process Of Measuring, Comparing, Computing And Connecting Goes On: a. Continually. b. Intermittently. c. Never. d. Whenever The Operator Takes Some Action. Answer: A Continually ● A Control System In Which The Output Is Regulated Only By Changes From Outside The Process Is Called: a. Open Loop. b. Closed Loop. c. Set Point. d. Measuring. Answer: A Open Loop. ● A Common Converter Used In Process Control
Is The I/P Converter, Which Converts Signals To Signals. a. Zero, Span b. Analog, Digital c. Current, Pneumatic d. Linear, Nonlinear Answer: C Current, Pneumatic ● Time Lag Can Be Defined As The Time Between: a. Turning An Instrument On And Off. b. A High Reading And A Low Reading. c. A Proportional Reading, And An Inverse Reading. d. Input To A Instrument & Output From An Instrument. Answer: D Input To An Instrument And Output From An Instrument ● Name The Three Most Common Mediums Of Data Transmission. a. Twisted Pair, Radio, Fiber Optics b. Phone, Telemetry, Radio c. Cable, Phone, Radio d. Coax, Phone, Fiber Optics Answer: A Twisted Pair, Radio, Fiber Optics
a. Analog Role. b. Inactive Role. c. Active Role. d. Plotter Role. Answer: C Active Role ● The Abbreviation Scada Stands For: a. Safety Control And Data Answering. b. Supervisory Control And Data Acquisition. c. System Computer And Digital Analog. d. Self Contained And Data Acquisition. Answer: B Supervisory Control And Data Acquisition ● Communicating Process Data To And From The Scada Computer Is The Purpose Of The: a. Conditioning System. b. Transmitting System. c. Control System. d. Interface System. Answer: D Interface System ● A Computer Program Operates Under The Control Of A(N): a. Operating System.
b. Controller System. c. Interface System. d. Process System. Answer: C Interface System ● The Configuration In Which Individual Computers Are Connected For Purpose Of Communication Is A A. Cpu. b. Biu. c. Network. d. Loop. Answer: C Network ● The Abbreviation Lan Stands For: a. Level Alarm Network. b. Loop Alarm Neutral. c. Local Alarm Network. d. Local Area Network. Answer: D Local Area Network ● Whole Circuits Manufactured With All Components In Place And Ready To Work Are Called: a. Semiconductor Circuits. b. Microprocessor Circuits. c. Rectifier Circuits. d. Integrated Circuits. Answer: D Integrated Circuits
