Test: Fault Analysis of Power Systems - Electrical Engineering (EE) MCQ

Match List-l (Symbol for 3-phase transformer connections) with List-ll (Zero-sequence equivalent circuits) and select the correct answer using the codes given below the lists: 
List-I

List-ll

The base impedance and base voltage for a given power system are 10Ω and 400 V respectively. The base kVA and the base current will be respectively

The per-unit admittance Y_Pu of a power system in terms of the base voltage V_base and the base voltamperes (VA)_base is given by

In a line to ground fault on a system, the fault current is 1500 A. The zero sequence current is

The fault current, in a double line to ground fault on a system depends on

There may be a zero sequence components in
1. line voltage of star circuit
2. phase voltage of star circuit
3. line current of delta circuit
4. phase current of delta circuit
Select the correct answer from the given options:

A 10 kVA, 400 V/200V single phase transformer with 10% impedance draws a steady short circuit line current of