Disadvantages of FCAW include:

Disadvantages of FCAW include:

• A. The wire feeder and power source must be fairly close to the point of welding
• B. It is simpler than SMAW
• C. The electrode wire is cheaper than solid wire
• D. Requires no slag

Answer: (A)

The key point is that with flux-cored arc welding you have heavy electrical leads and often gas lines feeding the arc, so keeping the wire feeder and power source near the weld is necessary for stable welding. Long leads introduce resistance and inductance, causing voltage drop and arc fluctuations that degrade penetration and bead quality. If you’re using gas-shielded FCAW, the shielding gas also travels through hoses, and longer distances can weaken shielding, increasing porosity and defects. This practical setup constraint—needing equipment close to the joint—is a real disadvantage in field work or on large assemblies, where mobility and reach matter. The other statements don’t describe a disadvantage of FCAW. FCAW isn’t inherently simpler than SMAW, and the process often involves additional costs and equipment (wire feeder, gas supply) rather than being simpler. The electrode wire isn’t universally cheaper as a disadvantage, and FCAW typically produces slag that must be removed, so “requires no slag” isn’t accurate.

The key point is that with flux-cored arc welding you have heavy electrical leads and often gas lines feeding the arc, so keeping the wire feeder and power source near the weld is necessary for stable welding. Long leads introduce resistance and inductance, causing voltage drop and arc fluctuations that degrade penetration and bead quality. If you’re using gas-shielded FCAW, the shielding gas also travels through hoses, and longer distances can weaken shielding, increasing porosity and defects. This practical setup constraint—needing equipment close to the joint—is a real disadvantage in field work or on large assemblies, where mobility and reach matter.

The other statements don’t describe a disadvantage of FCAW. FCAW isn’t inherently simpler than SMAW, and the process often involves additional costs and equipment (wire feeder, gas supply) rather than being simpler. The electrode wire isn’t universally cheaper as a disadvantage, and FCAW typically produces slag that must be removed, so “requires no slag” isn’t accurate.