Question

01:56:26
MCQ (100)
02. A 1 VA relay is ........... a 3 VA relay.
(A) Less sensitive than
(B) Equal sensitive as
(C) Approximately equal sensitive as
(D) More sensitive than​

Answer 1

question : 1 VA relay is ......... a 3 VA relay.

(A) less sensitive than

(B) equal sensitive as

(C) approximately equal sensitive as

(D) more sensitive than

solution : Sensitivity is the ability of the relay system to operate the low value of actuating quantity. it is a function of volt amperes input to the coil of the relay necessary to cause its protection.

The smaller the value of volt ampere input required to cause relay operation, the more sensitive is the relay.

here it is clear that volt amperes values, 1VA < 3VA

so, 1VA relay is more sensitive than a 3VA relay.

Therefore the correct option is (D)