Exam Question
How the indicated power of an engine can be measured using indicator measurement give the procedure with simple sketch of instrument used (16)
Class 4 (4th Engineer)
MEKM
📅 Jul 2022
Reference Answer
### 1. Concept of Indicated Power
Indicated Power (IP) is the theoretical power developed within an engine's cylinder by the pressure of the expanding gases acting on the piston. It represents the total energy converted from fuel to mechanical work within the combustion chamber, before any frictional losses are accounted for. This power is measured using an instrument called a **Mechanical Engine Indicator**, which generates a Pressure-Volume (P-V) diagram, also known as an 'Indicator Card' or 'Power Card'. The enclosed area of this diagram is directly proportional to the work done during one engine cycle.
### 2. The Instrument: Mechanical Engine Indicator
A simple sketch of the instrument is required to illustrate its construction and operation.
Indicated Power (IP) is the theoretical power developed within an engine's cylinder by the pressure of the expanding gases acting on the piston. It represents the total energy converted from fuel to mechanical work within the combustion chamber, before any frictional losses are accounted for. This power is measured using an instrument called a **Mechanical Engine Indicator**, which generates a Pressure-Volume (P-V) diagram, also known as an 'Indicator Card' or 'Power Card'. The enclosed area of this diagram is directly proportional to the work done during one engine cycle.
### 2. The Instrument: Mechanical Engine Indicator
A simple sketch of the instrument is required to illustrate its construction and operation.
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