Question 419Electricity & Electronics - QMED
70% to passWhen a fluorescent lamp fails to light and both ends of the tube are severely darkened, what must usually be replaced?
Athe fluorescent lamp tube
Bthe ballast
Cthe circuit breaker
Dthe starter
AI Explanation
The correct answer is A) the fluorescent lamp tube. When a fluorescent lamp fails to light and both ends of the tube are severely darkened, it typically indicates that the lamp itself has reached the end of its useful life and needs to be replaced. The darkening at the ends of the tube is a sign of lamp failure, and replacing the entire lamp tube is the necessary solution in this scenario. The ballast, circuit breaker, and starter are not the root cause of the problem in this case. The other options (B, C, and D) would not solve the issue of the failed, darkened fluorescent lamp tube.
Related Questions
Q5:Why should battery rooms be well ventilated during the charging process? Q265:When will the timer element of a reverse power relay activate the relay? Q200:With respect to motors, how is ambient temperature defined? Q514:By what means is a diesel-driven emergency generator prevented from being parall... Q428:For more complete vessel protection when using an impressed current cathodic sys...
Ready to test your knowledge?
Take a Electricity & Electronics - QMED Practice ExamOfficial Resources