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# EE8501 Important Questions Power System Analysis Regulation 2017 Anna University

## EE8501 Important Questions POWER SYSTEM ANALYSIS

### Sample EE8501 Important Questions Power System Analysis:

1 What is meant by base quantities in per unit representation
2 What is impedance diagram and what are the approximation
3 Define bus admittance matrix, bus impedance matrix?
4 A generator rated 25MVA, 11KV has a reactance of 15%. Calculate its p.u. reactance for a base of 50MVA and 10KV
5 What is single line diagram
6 Prepare the single phase equivalent circuit of three winding
transformer
7 Point out the approximations made in impedance diagram?
8 Write equation for per unit impedance if change base occurs
9 What is the need of base values
10 Contrast the π circuit representation of a transformer with off –
nominal ratio ‘α’
11 What are the function of modern power system
12 How are the loads are represented in the reactance and impedance diagram
13 Summarize the functions of power system analysis?
14 Examine the applications of Y-bus and Z-bus matrix?
15 Define restructure power system?
16 Define off nominal transformer ratio?
17 Define primitive network? CO 1
18 Order the methods available for forming bus impedance matrix
20 What is installed capacity of electrical power in India

Examine the reactance diagram for the power system
shown in fig. Neglect resistance and use a base of
100MVA, 220kV in 50KΩ line. The ratings of the
generator motor and transformer are give below.

 Subject name POWER SYSTEM ANALYSIS Short Name PSA Semester 5 Subject Code EE8501 Regulation 2017 regulation