NO
It depends on just how 'bad' the alternator is, but generally, not very long. You can actually drive your car until there is not enough electrical charge to spark across the spark plugs, and your car just stops, unable to start again.
air leak or bad alternator
Spark Plugs do not affect your alternator. As long as your engine is running then it should be charging unless your alternator is bad
You can drive as long as the battery holds up, so don't use any accessories, lights, heater, radio and such. Try to get to a garage or home as soon as possible.
alternator drive belt?
If bearings go bad on a alternator/ will make a grindind noise or long squilling noise.. but if only electronic's inside alternator are damage no noise wil be heard
A bad belt, a bad regulator in the alternator or bad brushes in the alternator.
That will depend on the capacity of the battery and the amount of electrical loads. could be 15 minutes or a couple of hours.
How long until you're going to want to have to replace the battery too?A bad alternator is death to the battery - don't wait - do the repair now.
Well if you can drive around for 15 to 30 min and you battery is still dead then your alternator is bad or if you put a new battery in and it go's dead avry time you run the truck then your alternator is bad
AS LONG AS THERE IS ENOUGH POWER IN BATTERY TO SUPPLY A SPARK TO THE ENGINE VIA THE DISTRIBUTOR IT WILL RUN FOR A WHILE (DONT DRIVE IT IN THE DARK THOUGH IT USE ALL THE POWER IN THE BATTERY) All the alternator does is to keep the battery charged up