1000+ Switchgear Protection MCQ Questions and Answers Pdf - 1

Question: 1

Arc in a circuit behaves as

(A) a resistance increasing with voltage rise across the arc

(B) a resistance decreasing with voltage rise across the arc

(C) an inductive reactance

(D) a capacitive reactance

Question: 2

In a circuit breaker the basic problem is to

(A) emit the ionizing electrons

(B) transmit large power

(C) extinguish the arc

(D) maintain the arc

Question: 3

The line insulation is ______ the insulation level of the station equipment.

(A) proportional to

(B) not directly related with

(C) more than

(D) same as

Question: 4

For which of the following protection from negative sequence currents is provided?

(A) transformers

(B) transmission line

(C) motors

(D) generators

Question: 5

Arc in a circuit breaker is interrupted at

(A) maximum voltage

(B) minimum voltage

(C) maximum current

(D) zero current