What would happen if a 13a fuse is put in a tv?

Nothing until the tv develops a fault, then it might catch fire and set your house alight. The correct value of fuse should always be used.

A fuse is a circuit safety device. Asking this question must mean that the fuse has blown. It has blown for a reason. The reason has to be found before a new fuse is installed. If the reason has been found and corrected then the fuse that the manufacturer recommended should be re installed. It is your option to use a larger fuse that what is recommended. On a fault condition by not limiting the current to a certain amperage there is the chance that more damage to that circuit's components will occur and irreparable damage to the TV could make it useless.

I know what would happen. The three amp fuse would blow. Any device that is plugged into a receptacle with out having sufficient resistance to limit the current flow will dead short the circuit and cause the breaker that feeds the circuit to trip. In this case the fuse being of a lower rating that the feed breaker the fuse will blow without tripping the receptacle's feed breaker.

My mercury manual says to use a 30 amp fuse for the blower motor however someone put a 20 amp fuse in. Would this cause my blower motor not to work?

The blower motor could stop working if it blew the 20 amp fuse. That's probably the worst that would happen. You should replace it with a 30 amp fuse, if that is what's called for in your manual.

What would happen if we didn't put oil in our engines?

The engine would see, because the metal pistons inside the metal cylinders would be metal to metal contact, and it would cause them to fuse together.

What would happen if you put a 13 amp fuse in your computer plug?

A 13 amp fuse that is in-line with a computer plug would stop the computer from ever using more than 13 amps, and would blow the fuse to do so. Before doing that, make certain that the wire and all other devices up to and including the computer power supply can adequately deal with 13 amps.

What would happen if you put something less dense then water into water what would happen if you put something just as dense as water into water and what would happen if you put something more dense?

-- It would float in the water, with part of it above the surface. -- It would hang just below the surface, or at whatever depth you placed it. -- It would sink down through the water like a rock.