Differential relay is used for the protection of transformers, induction motors, busbars and alternators against:

Buchholz relay is used in which of the following machines:

Thermal relays are commonly used in motors against over-currents which is drawn because of:

The operation speed of the relay depends on following factors (Multiple Answer Question):

The role of a Relay in protection scheme is:

Bimetallic strip present in Thermal relays will have two metal strips having different:

In case of short circuit protection scheme, the relay should have following characteristics:

Buchholz relay is which of the following relay:

Inverse Definite Minimum Time (IDMT) relays protects transformers from which of the following faults: (Multiple Answer Question)

Which of the following relay operates when there is a vector difference between two or more similar electrical quantities:

Which of the following relay is provided as the primary protection of transmission lines:

In Motors, which of the following relay protection is provided as protection for unbalance in the loading of the machine:

The delay fuses are used in the protection of which of the following:

A efficient and well designed protective relay scheme should have following features: (Multiple Answer Question)

Earth fault protection is provided by employing an Over current relay between phase and earth: