What device is used in power systems to sense and reduce abnormal current and voltage levels from fault conditions?

What device is used in power systems to sense and reduce abnormal current and voltage levels from fault conditions?

• A. Transistor
• B. Transducer
• C. Relay
• D. Transformer

Answer: (B)

The device that is used in power systems to sense and reduce abnormal current and voltage levels from fault conditions is a relay. Relays are critical protective devices that monitor electrical signals and operate to disconnect or isolate sections of a power system when they detect faults, such as overcurrent, undercurrent, or voltage abnormalities. A relay monitors the input from the system and, when a fault is detected, it initiates an operation that can trip circuit breakers or activate other protective measures to prevent damage to equipment and enhance the safety and reliability of the power system. In contrast, a transistor typically functions as a switch or amplifier in electronic circuits rather than as a protective device in power systems. A transducer is more closely associated with converting one form of energy to another, such as converting electrical signals into mechanical movement or vice versa. A transformer is primarily used for changing voltage levels between circuits but does not inherently provide protection against faults. Thus, the role of the relay as a protective measure in power systems is essential.

The device that is used in power systems to sense and reduce abnormal current and voltage levels from fault conditions is a relay. Relays are critical protective devices that monitor electrical signals and operate to disconnect or isolate sections of a power system when they detect faults, such as overcurrent, undercurrent, or voltage abnormalities.

A relay monitors the input from the system and, when a fault is detected, it initiates an operation that can trip circuit breakers or activate other protective measures to prevent damage to equipment and enhance the safety and reliability of the power system.

In contrast, a transistor typically functions as a switch or amplifier in electronic circuits rather than as a protective device in power systems. A transducer is more closely associated with converting one form of energy to another, such as converting electrical signals into mechanical movement or vice versa. A transformer is primarily used for changing voltage levels between circuits but does not inherently provide protection against faults. Thus, the role of the relay as a protective measure in power systems is essential.