CWEA E/I Level 3 Practice Exam 2026 Guide, Exams of Electrical and Electronics Engineering

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CWEA E/I Level 3 Practice Exam 2026 Guide

“1 I I I I I I I I I I I I I I I I I I I I I I I I al CWEA E/I Level 3 Practice Exam 2026 Guide If the potential difference across the coil is low, the coil will: A-draw too much current B-become too hot C-Produce too much magnetic force D-not heat up - GORRECTANSWERLD-nor heat up The NEC identifies environments that contain flammable vapors and gases as which class of hazardous location? A-Class T B-Class II C-Class III ©-Chss1V- SORRECHANSITER. ACs 1 Which of the following reduces high voltages and currents to save values for measurements? A-auto transformer B-megohmmeter C-instrument transformer D-variable transformer - GORREGHANSWER!-C-instrument transformer Ina three wire control circuit, when a power failure occurs: A-The interlock contact will close the circuit r I I I I I I I I I I I I I I I I I I I I I I I I L “1 I I I I I I I I I I I I I I I I I I I I I I I I al B-The operator can restart the meter automatically C-The motor can restart unexpectedly D-The operator must restart che meter manually CORRECT ANSWER -D-The operator must restart the meter manually Push buttons are classified as standard duty or heavy duty according to the: A-Kind of enclosure B-Service conditions C-frequency operation D-Current carrying ability CORRECT ANSWER. ‘D-Current carrying ability He push to test pilot light is used in applications where the pilot light is: Acrarely needed B-A neon bulb C-used in DC applications D-in constant use -tarely needed The advantage of LCDs over LEDs is: A-accuracy B-beteer visibility C-lower power consumption D-semsivity- CORRECT ANSWER. Clower power consumption Shielding protects an analog meter from: a. damage due to careless handling. r I I I I I I I I I I I I I I I I I I I I I I I I L “1 I I I I I I I I I I I I I I I I I I I I I I I I al b, stator. c, alternator, d. induction motor - GORREGTANSWER!b. stator. Which of the following is a sign of overheating rotor bars? a. Reduced starting torque. b. Noise. c. Discoloration. d. All of the above. - GORREGTANSWERI-c. Discoloration. Two sources of power, one AC and one DC, are required for running a(n): a. induction motor, b. squirrel-cage motor. c. synchronous motor. d. wound-rotor motor. - CORRECT ANSWER-c. synchronous motor. Modern synchronous motors have: a. both brushes and slip rings. b. brushes, but no slip rings. c, slip rings, but no brushes. d. neither brushes nor slip rings. CORRECT ANSWER-~d. neither brushes nor slip rings. All the following are true of 240-volt systems compared to 480-volt systems, except: a. they cost more to operate. b, they require more current per unit r I I I I I I I I I I I I I I I I I I I I I I I I L “1 I I I I I I I I I I I I I I I I I I I I I I I I al of power. c. they require smaller circuit breakers. d.they ae safer, - ERTS they require smaller circuit breakers, Ifa charged capacitor is removed from a circuit, the capacitor: a. retains its charge. b. loses some of its charge. c. loses most of its charge. d. loses all of its charge. - GORREGTANSWER)-«. retains its charge, Control systems are usually designed so that each individual circuit controls: . all functions of the machine. b. at least two functions. c. only one function. d. only one device. CORRECT ANSWER -c. only one function. A 115-volt, 2-KVA, single phase generator operating at full load will deliver how many amperes? a. 0,23 4.250 - ORRESTIANSSVER 17.4 What is che current when a circuit has a 1,500- watt load and a power factor of 86%, and operates from a three-phase 230-volt source? a. 9.7 amps r I I I I I I I I I I I I I I I I I I I I I I I I L “1 I I I I I I I I I I I I I I I I I I I I I I I I al a, both measured and controlled. b. controlled but not measured. c. measured but not controlled, d. neither measured nor controlled, CORRECT ANSWER + . measured but not controlled. The root-mean-square method is used to calculate: a. integral and derivative action. b. proportional band or gain. ¢, system accuracy, d. transducer bias - CORRECT ANSWER-c. system accuracy. To simulate an RTD input, you use a: a. digital VOM. b. potentiometer. c, resistance decade box. d. wally box. - CORRECT ANSWER. c. resistance decade box. SCADA systems typically span: a. an entire plant. b. many miles. c. part of the plant. dup 1 5,000 feet. - SERAESTANSER . many miles. In the ISA tag PIC-21, the P stands for: a. Positive. r I I I I I I I I I I I I I I I I I I I I I I I I L “1 I I I I I I I I I I I I I I I I I I I I I I I I al b. Pressure. c. Process, d. Proportional. - CORRECT ANSWER b, Pressure. The outputs of a digital transducer are in the form of: a. 1 to 5 my, b. 4 to 20 ma. c, digital computer words, d. on or off signals, - SORRECTIANSWERI c. digital computer words. Ashield around the signal lead is the most effective protection against: a. impedance. b. unwanted conductance. c. noise. d. inverted sources, - CORRECT ANSWER-c. noise, The most important consideration in loop control is: a. accessibility. b, accuracy. c. cost. dL nspomse, CORRECT ANSWER. reponse, Which element makes a programmable logic controller system flexible? a. Memory. b. 1/0. r I I I I I I I I I I I I I I I I I I I I I I I I L “1 I I I I I I I I I I I I I I I I I I I I I I I I al d. printed circuit assembly. - CORRECT ANSWER -c. microprocessor. Where is a computer's start-up program usually stored? a. In RAM b. In ROM c. On disk d. On magnetic tape - CORRECT ANSWER-b. In ROM How many signal conditions can digital I/O devices have? a. One b. Two c, Eight d. An infinite number - CORRECT ANSWER-b. Two ACDU (Command and Display Unit) computer screen thac senses finger pressure is: aa digitizer. b. an intelligent terminal. c, a scanner, d. a couch screen. - CORRECT ANSWER. d. a touch screen. Which of the following is not a goal of a microprocessor-based engine control system? a, Better engine performance b. Better fuel economy c. Lower exhaust emissions, CORRECT ANSWER -d. Lower noise emissions d. Lower noise emissions r I I I I I I I I I I I I I I I I I I I I I I I I L “1 I I I I I I I I I I I I I I I I I I I I I I I I al The RS232C standard applies to what type of digital data transmission? a. Balanced b. Fiber optic c. Parallel d. Serial - GORRECTIANSWER-d. Serial 10°C is equal to how many degrees Fahrenheit? a, 23,.3°F b. 50°F c. 75.6°F 4.47.6? -SORRECHANSIUER: Whar is the volume of a cylinder with a 40-foot diameter and height of 23 feet? a, 1,444 cu ft b, 7,222 cu ft c, 28,888 cu ft d. 33,221 cu ft - CORRECT ANSWER -c. 28,888 cu ft One gallon of water weighs 8.34 pounds and one cubic foot contains 7.48 gallons of water. A fish tank measures 36 inches long, 24 inches wide and 20 inches high. How many pounds of water will be in the fish tank? a. 64.4 lbs b. 74.8 lbs c. 83.4 Ibs r I I I I I I I I I I I I I I I I I I I I I I I I L “1 I I I I I I I I I I I I I I I I I I I I I I I I al Which of the following should you NOT do after giving your crew instructions? a. Repeat key points b. Justify your instructions c. Refuse to change assignments d. Seek further information on a job - CORRECT ANSWER +. Refuse to change assignments The surest way to get feedback is through: a. a suggestion box. b. the company newsletter. c, asking questions. d. All of the above - CORRECT ANSWER-c. asking questions. The best way to motivate a crew is though: a. force. b. playing favorites. c. recognition. d. threats. - CORRECT ANSWER -c. recognition. r I I I I I I I I I I I I I I I I I I I I I I I I L