🔍 Key Concepts

• Exhaust gas temperature indicates how hot the gases leaving a diesel cylinder are • Different instruments measure heat, power/force, rotation speed, or total energy • Each option name is linked to a specific type of measurement in engine work

💭 Think About

• Ask yourself: which instrument is specifically designed to measure high temperatures, especially in exhaust systems? • Which of these devices would you expect to be installed on the exhaust manifold or indicator cock of a diesel engine? • Can any of these devices measure speed or power rather than temperature?

✅ Before You Answer

• Match each option with what it normally measures: temperature, heat quantity, power/torque, or speed • Think about which instrument marine engineers use to compare exhaust temperature between cylinders to detect problems • Eliminate any device that is clearly for measuring speed (rpm) or brake horsepower/torque rather than temperature