# Power System Analysis MCQ Part 3

Power System Analysis MCQ Part 3

Main: Power System Analysis MCQ

## Short circuit kVA Definition

Short circuit kVA is defined as the product of ________ voltage and __________ current:

- Normal, Normal
- Short circuit, Normal
- Short circuit, Short circuit
- Normal, Short circuit

Correct answer: 4. Normal, Short circuit

The short circuit kVA is the product of normal system voltage and short circuit current calculated at the point of fault.

## Base impedance in ohms is mathematically expressed as

Base impedance in ohms is mathematically expressed as:

- [Base voltage in kV (line to line) ] * 1000 / Base kVA
- [Base voltage in kV (line to line) ]^2 * 1000 / Base kVA
- [Base voltage in kV (line to line) ]^3 * 1000 / Base kVA
- None of these

Correct answer: 2. [Base voltage in kV (line to line) ]^2 * 1000 / Base kVA

## Which of the following statements is correct about Per unit system

Which of the following statements is correct about Per unit system:

- Transformer connections affect the per unit values
- Referring electrical quantities from one side of the transformer to the other side can be avoided
- Very often per unit impedances expand to very narrow range
- None of these

Correct answer: 2. Referring electrical quantities from one side of the transformer to the other side can be avoided

## H in swing equation is defined as

H in swing equation is defined as:

- KE * S
- KE/S
- 2KE + 2S
- 4KE/S

Correct answer: 2. KE/S

## Which of the following statement is false about Graph theory in PSA

Which of the following statement is false about Graph theory in PSA:

- An element of a graph is called an edge
- For n number of nodes the rank of graph is n-1
- Each current source is replaced by a short circuit in a graph
- Planar graph is the one can be drawing without edges cross-over

Correct answer: 3. Each current source is replaced by a short circuit in a graph

More MCQ on Power System Analysis:

- Power System Analysis MCQ Part 1
- Power System Analysis MCQ Part 2
- Power System Analysis MCQ Part 3
- Power System Analysis MCQ Part 4
- Power System Analysis MCQ Part 5
- Power System Analysis MCQ Part 6
- Power System Analysis MCQ Part 7
- Power System Analysis MCQ Part 8
- Power System Analysis MCQ Part 9
- Power System Analysis MCQ Part 10