No, this doesn't seem a very likely explanation of the Big Bang. A black dwarf has way to little mass to account for the entire Universe.
A cooled white dwarf is a black dwarf. I think you are thinking of a neutron star which has nothing to do with a white dwarf.
If nothing disturbs the white dwarf it will slowly cool for hundreds of millions of years until it turns to an invisible black dwarf, which if nothing disturbs the black dwarf it will last until the universe ends.
A black dwarf does not burn anything. A black dwarf is the cooled remnant of a dead star.
No, you cannot. As the name suggests, a "black" dwarf is "black" because it has stopped burning hydrogen/helium for fuel, and is now not producing energy and has cooled to the point that it no longer glows.
A brown dwarf will never become a black dwarf. A black dwarf is what becomes of a white dwarf. This process takes hundreds of trillions of years.
The Black Dwarf was created in 1817.
The Black Dwarf ended in 1824.
Star - Red Giant - White Dwarf - Black dwarf So u could say 4 i guess. :)
Black Dwarf Hornbill was created in 1861.
The Black Dwarf - personage - was born in 1740.
The Black Dwarf - personage - died in 1811.
Dwarf black stingray was created in 2008.