An exhaust fan systems consists of 4 parallel v-beltswrapped around driver pulleys A and driven pulley B with a diameterof 100 mm and 240 mm respectively. Coefficient of friction, μbetween belt and pulleys is known as 0.25. Pulley groove, α hasbeen design at an angle of 60°. The maximum permissible tension is3860 N, cross-sectional area of the belt is A = 160 mm2 and densityof belt’s material Ï = 1000 kg/m3. If the driver pulley A anddriven pulley B rotates at a speed of 1800 RPM and 700 RPMindividually due to slippages.
(i) Find the angle of contact of pulley A, given thepulley centre to centre distance is 1000 mm.
(ii) Calculate the tension distributed by centrifugalforces in one V-belt.
(iii) Deduce total power transmitted by the driverpulley A. (iv) Deduce total power received by the drivenpulley B. (v) Find the belt slip percentage at pulley B
