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Nepal Eng. Council15th Exam · 2083 BS

Jan 4, 2027 · 100 Marks · Pass: 50%

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Chapter 10: Project Planning, Design & Implementation
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Q-d7e7bdd4

AALL10 · Chapter 10Project Planning & Implementation🏛️ Past Licensure QuestionID: d7e7bdd4

In Earned Value Management (EVM), what is the standard mathematical formula for calculating the Schedule Performance Index (SPI)?

Multiple Choice Options

A
$SPI = \frac{EV}{PV}$
✓ Correct Option
B
$SPI = \frac{PV}{EV}$
C
$SPI = \frac{AC}{EV}$
D
$SPI = \frac{EV}{AC}$

Detailed Technical Solution & Explanation

In EVM, the Schedule Performance Index ( $SPI$ ) measures schedule efficiency:

SPI = \frac{\text{Earned Value (EV)}}{\text{Planned Value (PV)}}

. An $SPI > 1.0$ indicates ahead of schedule, while $SPI < 1.0$ indicates project delays. ( $EV/AC$ is the Cost Performance Index, $CPI$ ).

Option Analysis:

•

Option A (SPI =

\frac{EV}{PV}

): Correct. Standard EVM formula for schedule efficiency.

•

Option B (SPI =

\frac{PV}{EV}

): Inverted formula.

•

Option C (SPI =

\frac{AC}{EV}

): Inverted cost ratio.

•

Option D (SPI =

\frac{EV}{AC}

): Formula for Cost Performance Index (

CPI

).

Reference: Demo2 · Set 2NEC Licensure Syllabus

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