True or False: Electromechanical devices can tolerate transient voltages several times their ratings for a short period.

• A. True
• B. False
• C. Not necessarily
• D. Unknown

Answer: (A)

Transient voltages are short spikes that occur in electrical systems from switching, lightning, or other events. Electromechanical devices are designed with surge ratings and insulation margins that let them ride through these brief spikes without damage, as long as the energy and duration stay within what the manufacturer specifies. The stored energy in inductive components and the presence of protective measures mean a momentary overvoltage can be tolerated, but only up to those defined limits. So the statement is true: brief surges several times the normal voltage can be tolerated for a short period, provided they stay within the device’s rated surge/impulse withstand.