Question 277Electricity & Electronics - 1st Asst/Chief
70% to passAs shown in the illustrated switchboard, what is the function of the switch labeled 'PFM Sel. Sw.'? Illustration EL-0003
Ato determine bus frequency
Bto determine reactive volt amperes of the bus
Cto determine frequency of either generator
Dto determine power factor of either generator
AI Explanation
The correct answer is D) to determine power factor of either generator. The "PFM Sel. Sw." or Power Factor/Megawatt Selector Switch is used to determine the power factor of the generators connected to the switchboard. This is an important parameter to monitor, as the power factor affects the efficiency and performance of the electrical system. The other answer choices are incorrect because they do not accurately describe the function of this particular switch. Options A and C relate to frequency, while option B is about reactive volt-amperes, which are different electrical parameters from power factor.
Related Questions
Q@q.QuestionNumber:Which of the listed temperature measuring devices installed on a large turbo-ele... Q@q.QuestionNumber:Propulsion AC generators creating 4160 VAC use transformers to provide nominally... Q@q.QuestionNumber:A common method used to control the speed of a synchronous AC propulsion motor o... Q@q.QuestionNumber:As shown in the illustrated devices and symbols, which of the symbols represents... Q@q.QuestionNumber:As shown in figure "C" of the illustration, what are the purposes of the couplin...
Ready to test your knowledge?
Take a Electricity & Electronics - 1st Asst/Chief Practice ExamOfficial Resources
Want to practice with timed exams?
Download Coast Guard Exams for the full exam experience.
Get the App