An electric motor running at 1200 rpm drives a punch press shaft at 100 rpm by means of a 130 mm wide and 8 mm thick belt. When the clutch is engaged, the belt slips. To correct this condition, an idler pulley was installed to increase the angle of contact, but the same belt and pulley were used. The original contact angle on the 200 mm motor pulley is 160 degrees. The original tension ratio is 2.4 and the net tension is 12 N/mm of the belt width. If an increase in transmission capacity of 20 % will prevent slippage, determine the new angle of contact.

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Power Transmission Elements

It is defined as the energy transfer from one location to another location. The energy will start moving from the energy generation source to the energy applied position to obtain the work output. From this method, a large amount of electric energy moves from the power station to various electrical substations.