Question 88Electricity & Electronics - Assistant Engineer
70% to passAs shown in the illustration, what is responsible for maintaining the "UV" relay energized when the master switch handle is moved away from the "off" position? Illustration EL-0102
Anormally open 'UV' contacts
B'MS 2' contacts
C'MS 1' contacts
Dnormally closed 'OL' contacts
AI Explanation
The correct answer is A) normally open 'UV' contacts. The 'UV' (undervoltage) relay is responsible for maintaining the circuit energized when the master switch handle is moved away from the 'off' position. The normally open 'UV' contacts close when the 'UV' relay is energized, completing the circuit and keeping the system powered up. The other options are incorrect because 'MS 2' and 'MS 1' contacts are not directly involved in maintaining the 'UV' relay, and the 'OL' (overload) contacts are normally closed, which would not be responsible for keeping the 'UV' relay energized.
Related Questions
Q@q.QuestionNumber:How are operational amplifiers, used primarily in analog circuits, characterized... Q@q.QuestionNumber:Assuming the vessel has an engine control room, where is an engineers' assistanc... Q@q.QuestionNumber:What is the most reliable and preferred method for determining the state of char... Q@q.QuestionNumber:What type of DC motor has extremely high starting torque, but has poor inherent ... Q@q.QuestionNumber:High-pressure compressed air should not be used to clean electric motors or cont...
Ready to test your knowledge?
Take a Electricity & Electronics - Assistant Engineer Practice ExamOfficial Resources
Want to practice with timed exams?
Download Coast Guard Exams for the full exam experience.
Get the App