The resistance of armature winding depends upon all of the factors listed, which are:

1. Length of conductor: The longer the length of the conductor in the armature winding, the higher its resistance will be, as there is more material for the electrical current to flow through.

2. Cross-sectional area of conductor: The larger the cross-sectional area of the conductor in the armature winding, the lower its resistance will be, as there is more space for the electrical current to flow through.

3. Number of conductors: The more conductors that are used in the armature winding, the lower the resistance will be, as there are more paths for the electrical current to flow through.

Therefore, the resistance of the armature winding is dependent on all of these factors, and can be calculated using the formula:

Resistance = (Length of conductor x Resistivity) / Cross-sectional area of conductor x Number of conductors

Where resistivity is a constant that depends on the specific material used for the conductor.