Question

01:05:30
MCQ (100)
Q65. Which of the following components are not
used for static relays?
(A) Transistors
(B) Aluminium Disc
(C) Capacitors
(D) Diodes​

Answer 1

Answer:

c, aluminium Disc

Explanation:

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Answer 2

Answer:

B) Almunium Disc .

Explanation:

Relays are extensively used in the protection of system from fault and abnormal conditions. In today’s world, the static combined protection control & monitoring systems are used for the protection of systems.

In electrical systems, a static relay is a type of relay, an electrically operated switch, that has no moving parts. Static relays are contrasted with electromechanical relays, which use moving parts to create a switching action.

Definition: The relay which does not contain any moving parts is known as the static relay. In such type of relays, the output is obtained by the static components like magnetic and electronic circuit etc. The relay which consists static and electromagnetic relay is also called static relay because the static units obtain the response and the electromagnetic relay is only used for switching operation

The solid state components used are transistors, diodes, resistors, 0and capacitor and so on.

Advantages of Static Relay:-

• Consumption of power is low.
• The selectivity of the system can be improved by using special circuits.
• There are no moving parts thus arcing and contact bounce is not present which saves a lot of money.
• Vibrations and effects of gravity is not present in operation of static relays.
• These relays are compact.
• These relays have high speed.
• The relays can be programmed according to the needs.
• The settings of the relay can also be changed if the line carries charge.
• Only one relay is sufficient for several functions.

(#SPJ3)