Thermal overload relays are used to protect the motor against overcurrent due to heavy loads.
Answer : The inverse definite mean time relays are used for over current and earth fault protection of transformer against internal short-circuits.
Description : IDMT relays are used to protect the transformer against : (A) Internal short -circuits (B) Open circuits (C) External short circuits (D) Oil leakage
Answer : IDMT relays are used to protect the transformer against : External short circuits
Answer : To protect most of the electrical equipment handling low power, the types of relays used are thermocouple, electronic and bimetallic.
Answer : A thermal protection switch can protect against overload.
Answer : Overload relays are of induction, solid state, thermal, electromagnetic type.