Question 238Electricity & Electronics - 1st Asst/Chief

70% to pass

As shown in figure "A" of the illustration, what is the purpose of the "test button"? EL-0178

Diagram for USCG Electrical Chief: As shown in figure "A" of the illustration, what is the purpose of the "test...

AThe test button is used to reset the now open normally closed relay contacts after an overload trip.

BThe test button is used to reset the now closed normally open relay contacts after an overload trip.

CThe test button is used to mimic an overload to test the trip function of the overload relay.

DThe test button is used to test the actual current trip value of the overload relay.

AI Explanation

The correct answer is C) The test button is used to mimic an overload to test the trip function of the overload relay. The purpose of the test button is to simulate an overload condition and verify that the overload relay will trip as intended. This allows the operator to test the functionality of the overload protection system without actually subjecting the equipment to an overload. The other answer choices do not accurately describe the purpose of the test button in this context.

Pass Your Coast Guard Licensing Exams!

Study offline, track your progress, and simulate real exams with the Coast Guard Exams app

Download on App Store Get it on Google Play Download for Mac