1. Unit 3 Clutches, Brakes and Dynamometers
Theory of Machines I
Unit 3
Clutches, Brakes and Dynamometers

2. Dynamometers
A Dynamometer is a brake but in addition, it has a device to measure frictional resistance. Knowing the frictional resistance, we may obtain the torque transmitted and hence the power of the engine.

3. Types of Dynamometers Absorption Dynamometer
i) Prony brake dynamometer
ii) Rope brake dynamometer
Transmission Dynamometer
i) Belt transmission dynamometer
ii) Epicyclic dynamometer
iii) Torsion Dynamometer

4. Types of Dynamometers Absorption Dynamometer
i) Prony brake dynamometer
ii) Rope brake dynamometer
Transmission Dynamometer
i) Belt transmission dynamometer
ii) Epicyclic dynamometer
iii) Torsion Dynamometer

5. Absorption Dynamometer
In the Absorption dynamometers, the entire energy or power produced by the engine is absorbed by the friction resistances of the brake and it is transformed into heat, during the process of measurement.
Used for measurement of moderate powers only.
Transmission Dynamometer
In the Transmission dynamometers, the energy is not wasted in friction but is used for doing work. The energy or power produced by the engine is transmitted through dynamometer to some other machines where power developed is suitably measured.

6. Types of Dynamometers Absorption Dynamometer
i) Prony brake dynamometer
ii) Rope brake dynamometer
2. Transmission Dynamometer
i) Belt transmission dynamometer
ii) Epicyclic dynamometer
iii) Torsion Dynamometer

7. Prony brake dynamometer

8. Types of Dynamometers Absorption Dynamometer
i) Prony brake dynamometer
ii) Rope brake dynamometer
2. Transmission Dynamometer
i) Belt transmission dynamometer
ii) Epicyclic dynamometer
iii) Torsion Dynamometer

9. Rope brake dynamometer

10. Types of Dynamometers Absorption Dynamometer
i) Prony brake dynamometer
ii) Rope brake dynamometer
2. Transmission Dynamometer
i) Belt transmission dynamometer
ii) Epicyclic dynamometer
iii) Torsion Dynamometer

11. Belt transmission / Froude / Throneycroft dynamometer

12. Types of Dynamometers Absorption Dynamometer
i) Prony brake dynamometer
ii) Rope brake dynamometer
2. Transmission Dynamometer
i) Belt transmission dynamometer
ii) Epicyclic dynamometer
iii) Torsion Dynamometer

13. Epicyclic-train dynamometer

14. Types of Dynamometers Absorption Dynamometer
i) Prony brake dynamometer
ii) Rope brake dynamometer
2. Transmission Dynamometer
i) Belt transmission dynamometer
ii) Epicyclic dynamometer
iii) Torsion Dynamometer

15. Torsion dynamometer

16. Bevis-Gibson Flash Light Torsion dynamometer