This  device is made up of an equal-diameter driving and driven pulley, a variable-speed D.C. motor. The input shaft (motor shaft) and the output shaft are where the pulleys are mounted. To alter the belt's initial tension, the driven pulley can slide on the base with the bearing block. Power output can be measured thanks to the brake drum positioned on the output shaft. Dimmerstats are used to change the motor speed. For measuring the speeds of driven and driving pullies, respectively, a two channel RPM Indicator is offered.

Specifications: 

• 1.D.C. Motor – 1 HP, 1500 RPM, variable speed.
• 2.Driving & Driven puilies of equal diameters.
• 3.Brake drum along with spring balance.
• 4.Fiat Belt of fixed length of following materials –
• (i)Fabric Belt
• (ii)Canvas Belt.
• (iii)Rubber Belt.
• 5.Belt tightening arrangement.
• 6.Speed Controller unit.
• 7.Two Channel digital RPM Indicator.
• 8.Stroboscope.

Experimentation 

1. To measure co-efficient of friction between pulley material and different belt materials.

2. To measure power transmitted with varied belt tensions and plotting graph of (T1 – T2).Tension Characteristics.

3. To measure percentage slip at fixed belt tension by varying load on brake drum and plot graph of (T1-T2)

Vs.percentage slip.i.e. Slip Characteristics. Finding a creep zone from graph.

4. To measure belt slip speed and observe the limiting value float at constant speed when the slip just starts.

Service Required:

1.230 V.A.C. stabilized power supply

2.Space -. 1.5m x 1.5 m.