Phase comparators in case of static relays and electro-mechanical relays normally are

Related MCQs

• relays are used for phase faults on long line.
• Discrimination between main and back up protection is provided by the use of relays which are
• The inverse definite mean time relays are used for over current and earth fault protection of transformer against
• Relays can be designed to respond to changes in
• Overload relays are of…… type.
• Thermal overload relays are used to protect the motor against over current due to
• D.C. shunt relays are made of
• Directional relays are based on flow of
• Protective relays are devices that detect abnormal conditions in electrical circuits by measuring
• To protect most of the electrical equipment handling low power, the types of relays used are