Electrical Engineering quiz

More questions about Electrical Engineering

These visible examples show the question style. LearnClash turns the full topic into ranked duels and spaced repetition.

1. 1 Easy

   Who developed the first commercially viable incandescent light bulb in 1879?

   Answer: Thomas Edison

   Why: Edison tested thousands of plant fibers before finding that carbonized Japanese bamboo burned steadily for over 1,200 hours.

2. 2 Medium

   Which logic gate outputs true only if both inputs are true?

   Answer: AND gate

   Why: It is the electrical version of a series pair of switches: break either one and nothing gets through.

3. 3 Hard

   What did the inventor of the AC induction motor love as a man loves a woman?

   Answer: a white pigeon

   Why: He fed the birds nightly in New York parks and nursed one in his hotel room when it fell ill.

4. 4 Easy

   Which protective invention did Benjamin Franklin devise before his famous 1752 kite experiment?

   Answer: Lightning rod

   Why: Franklin intentionally never patented the lightning rod so that anyone could freely build one to safeguard their home.

5. 5 Medium

   Why don't birds get electrocuted when sitting on a single power line?

   Answer: no potential difference

   Why: Both feet sit at the same voltage, so nothing drives a current through the bird; touching a second line would end that.

6. 6 Hard

   What is the ideal input impedance of an operational amplifier?

   Answer: infinite

   Why: Drawing no input current at all is what lets it sense a voltage without disturbing the circuit it is measuring.