Question

question 6
welding power sources use a type of transformer to create electricity for welding.
a steady te
b solid state
c step - up
d step - down

Explanation:

Welding requires a lower voltage and higher current. A step - down transformer reduces the voltage (from the primary side to the secondary side) while increasing the current (based on the principle \(V_1I_1 = V_2I_2\) for an ideal transformer, neglecting losses). A steady - state transformer is not a standard term in this context. A solid - state transformer refers to a different technology (using power electronics). A step - up transformer increases voltage which is not suitable for welding.

Answer:

D. Step - down