Switchgear protections

Inrush protection

Distance protection

Time graded and current graded over current protection

Both (B) and (C)

a capackive reactance

an inductive reactance

a resistance increasing with voltage rise across the arc

a resistance decreasing with voltage rise across the arc

split-phase relays

reactance relays

impedance relays

none of the above

low melting point and high specific resistance

low melting point and -low specific resistance

high melting point and low specific resistance

low melting point and any specific resistance

1 mega ohms

10 mega ohms

100 mega ohms

500 mega ohms

single phase motors only

two phase motors only

two single phase motors running in parallel

three phase motors

Load flow

Load flow and short-circuit

network analyzer is used to solve problems of A. Load flow B. Load flow and short-circuit C. Load flow and stability

Load flow, short-circuit and stability

two currents

two voltages

two or more similar electrical quantities

none of the above

reactors

resistors

capacitors

none of the above

20 A

50 A

100 A

200 A