"The Man Test"

So my dad has this test that he has been threatening to make all potential husbands pass. He claims these questions involve the Really Important Things that all men should know something about. Now. My dad has made it very clear that failing this test does not mean you can't marry one of his daughters. It simply means that we shouldn't let you do any home repairs.
And simple Google-acquired answers are not acceptable, apparently. He's looking for great detail, because our basic household functions are on the line. My dad drives a hard bargain.

The Man Test

1. What is the relationship between the pistons and the crankshaft? ("If he can answer this question, then he knows about cars.")

2. In an outlet, what color is the hot wire, the neutral wire, and the ground wire? ("And if he knows this one, then he won't get shocked if he tries to do some electrical work.")

3. What is the purpose of the pressure tank? ("Also, if he thinks PVC is a college, DON'T LET HIM NEAR THE PLUMBING!!")

So good luck, boys!

But of course, we all know that to really Be a Man, you must be swift as a coursing river, with all the force of a great typhoon, with all the strength of a raging fire, mysterious as the dark side of the moon!