True or False: Motors operating off of three-phase are generally more expensive and less satisfactory than those operating off of single or two-phase.

True or False: Motors operating off of three-phase are generally more expensive and less satisfactory than those operating off of single or two-phase.

• A. True
• B. False
• C. Sometimes true
• D. Always false

Answer: (A)

The assertion that motors operating off of three-phase are generally more expensive and less satisfactory than those operating off of single or two-phase is false. Three-phase motors have several advantages, making them preferable in many industrial applications. Three-phase motors are typically more efficient and reliable compared to single-phase and two-phase options. This efficiency translates to higher performance levels, as three-phase systems can deliver more power with reduced energy loss. Additionally, three-phase motors operate more smoothly due to the continuous power flow, which helps in minimizing vibrations and improving the overall longevity of the machinery. Furthermore, while three-phase motors may have a higher upfront cost, they often lead to lower operational costs over time through energy savings and reduced maintenance needs. Many industries utilize three-phase systems because of their superior performance and reliability, which makes them a favored choice rather than less satisfactory. In contrast, single-phase systems can struggle under heavier loads and require additional components for better performance, making them less efficient in high-demand scenarios. This context highlights why the statement is not accurate.

The assertion that motors operating off of three-phase are generally more expensive and less satisfactory than those operating off of single or two-phase is false. Three-phase motors have several advantages, making them preferable in many industrial applications.

Three-phase motors are typically more efficient and reliable compared to single-phase and two-phase options. This efficiency translates to higher performance levels, as three-phase systems can deliver more power with reduced energy loss. Additionally, three-phase motors operate more smoothly due to the continuous power flow, which helps in minimizing vibrations and improving the overall longevity of the machinery.

Furthermore, while three-phase motors may have a higher upfront cost, they often lead to lower operational costs over time through energy savings and reduced maintenance needs. Many industries utilize three-phase systems because of their superior performance and reliability, which makes them a favored choice rather than less satisfactory.

In contrast, single-phase systems can struggle under heavier loads and require additional components for better performance, making them less efficient in high-demand scenarios. This context highlights why the statement is not accurate.