Mid-Level Electrical Engineering Quiz on Power Systems
A medium-level quiz that tests knowledge of power system concepts, from transformers to fault analysis, in a clear multiple-choice format.
Quiz Questions
Answer all questions below and test your knowledge.
- 1
A step‑up transformer has 120 turns on the primary winding and 480 turns on the secondary. If the primary is connected to a 240 V source, what is the secondary voltage?
- 2
In a balanced three‑phase Y‑connected load drawing 10 A line current at 400 V line‑to‑line, what is the total real power consumed assuming a power factor of 0.8 lagging?
- 3
A feeder protected by a circuit breaker is rated for 125 A continuous load. According to NEC, what is the maximum allowable continuous load current?
- 4
A 10 kV substation has a source impedance of 5.8 Ω per phase. If a bolted three‑phase fault occurs at the bus, what is the initial symmetrical fault current per phase?
- 5
For a 50 Hz AC circuit, a time‑overcurrent relay is set to operate at 1.5 times the rated current with a time delay of 0.2 s. If the fault current is 3 times rated, how long will the relay wait before tripping?
- 6
A non‑linear load injects 5 % total harmonic distortion (THD) into a 120 V RMS supply. What is the RMS value of the fundamental component?
- 7
A 2‑km copper transmission line has a resistance of 0.075 Ω per km per phase. If it carries 200 A per phase at 33 kV line‑to‑line, what is the total I²R loss for the three phases?
Never miss a quiz!
Daily challenges on Telegram
Check These Out Too
Iconic Movie Quotes Quiz
How well do you know your movie lines? See if you can match these famous quotes to their films!
80s Movie Mania: The Ultimate Trivia Gauntlet
Think you know your 'Back to the Future' from your 'Blade Runner'? Prove your 80s movie mastery with these challenging questions!
Can You Name These Capital Cities?
Put your global knowledge to the test! Match the country to its capital city.
Easy Music Trivia Challenge!
Think you know music? Let's find out with this super easy trivia quiz!
History's Hidden Chapters: A Scandalous Quiz
Dive deep into the annals of time and test your knowledge of history's most surprising secrets and scandalous events. Are you ready for the truth?
Idioms & Phrases Challenge
How well do you know common English idioms and phrases? Let's find out!