SCIENCE 101 > EXAM > CWEA E/I Level 3 Test Practice | 50 Questions with 100% Correct Answers (All)

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CWEA E/I Level 3 Test Practice | 50 Questions with 100% Correct Answers

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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 - ✔✔D-not heat up The NEC identifie s en... vironments that contain flammable vapors and gases as which class of hazardous location? A-Class I B-Class II C-Class III D-Class IV - ✔✔A-Class I 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 - ✔✔C-instrument transformer In a three wire control circuit, when a power failure occurs: A-The interlock contact will close the circuit B-The operator can restart the meter automatically C-The motor can restart unexpectedly D-The operator must restart the meter manually - ✔✔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 - ✔✔D-Current carrying ability He push to test pilot light is used in applications where the pilot light is: A-rarely needed B-A neon bulb C-used in DC applications D-in constant use - ✔✔A-rarely needed The advantage of LCDs over LEDs is: A-accuracy B-better visibility C-lower power consumptio [Show More]

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