Development of 11KV/433 volts substation automation scheme using PLC for cyclic ON/OFF load control
The main function of substations are
The important characteristics of the fluid used in Circuit Breaker are :-
The advantage of using oil in Oil Circuit Breaker as an arc quenching medium is:
Instrument Transformer are used because
A potential transformer is a
Big porcelain bushing, hollow insulators can be used up to _______ kV.
The use of ________ for high voltage applications is becoming more common.
DC supply __________ be used for the transformer.
The ratio of secondary induced emf to primary induced emf is known as ___________
The transmission voltage in India are _________ .
Transmission network is commonly known as __________
_________ is one of the best conductors due to its high electrical conductivity and high tensile strength for all type of transmission.
Aluminium has _______ the resistivity of copper.
When 1 or 2 percentage of cadmium is added to copper it __________ the tensile strength by ________ but ________ the conductivity by ________.
In double bus-bar system ,there is a provision of a bus-bar coupling switch for transferring operation from one bus-bar to another _________ .
Timers are output instructions that are internal to the programmable logic controller.
In word zero, of timer element, bit 15, is the _______
An on-delay timer is not retentive in nature.
In timer element, word zero is for _______
In a default timer file, timer 3�s done bit is addressed as ________ .