In case of V-belt the groove angle in small pullies is about _________

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In a single V-belt drive having 30° groove angle, the cross-section area of belt is 350 mm^2 and mass density of belt material is 1400 kg/m^3. The maximum tension transmitted through the belt in kN is ________

asked Jan 29, 2022 in Farm Machinery by Olivia (38.9k points)

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A V-belt is used to transmit 5 KW at 17 m/s, the included angle of the belt is 38°, the density of the belt is 1.25 g/cm^3, contact angle on smaller pulley is 150°, tension on the belt is adjusted by providing idlers. Find tension at tight and slack side of belt.

asked Jan 29, 2022 in Farm Machinery by Olivia (38.9k points)

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A V-belt operates at 25 m/s peripheral speed. The mass of the belt per unit length is 0.9 kg/m. The value of centrifugal tension in belt is ______

asked Jan 29, 2022 in Farm Machinery by Olivia (38.9k points)

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While testing a wheat thresher at recommended throughout 80 Nm torque is recorded at 850 rpm at the main shaft of the threshing cylinder, which is operated by a 200-mm diameter pulley. The overload factor and unit mass of V-belt are 1.2 and 0.9 kg/m respectively. At condition of maximum power transfer the maximum tension in V-belt in N is __________

asked Jan 29, 2022 in Farm Machinery by Olivia (38.9k points)

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In a belt drive, the mass of the belt is 10 kg/m and its speed is 6 m/s. The drive transmits 20 KW of power. Determine the initial tension in the belt and the strength of the belt. The co-efficient of friction is 0.25 and wrap angle is 220°.

asked Jan 29, 2022 in Farm Machinery by Olivia (38.9k points)

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Calculate the power transmitted by the belt and pulley arrangement, if tension on tight side of the belt is 50 kg and tension on slack side is 25 kg. The diameter and speed of driving pulley is 0.95 m and 350 rpm.

asked Jan 29, 2022 in Farm Machinery by Olivia (38.9k points)

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If a driven pulley is made at 350 rpm by a driving pulley of 0.3 m diameter running at 1400 rpm. Determine length of open belt when the pulleys are 4 meters apart.

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A countershaft of engineering workshop is driven by electric motor with the help of canvas belt and pulley arrangement such that the speed of bet is 600 m/min and it transmits 50 KW. Find the difference between tension on either side of the belt.

asked Jan 29, 2022 in Farm Machinery by Olivia (38.9k points)

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Two pulleys are connected by a belt. The sum of the diameters of two pulleys is 90 cm and while the one makes 50 rpm, the other makes 20 rpm. Find the diameter of other pulley.

asked Jan 29, 2022 in Farm Machinery by Olivia (38.9k points)

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Determine the length of cross belt of connecting two pulleys 5 cm apart. The diameter of driving and driven pulleys are 1.25 m and 0.75 m respectively.

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V-belts are named because of __________

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In an epicyclic gear train, one arm carries two wheels A and B having 25 teeth and 35 teeth respectively. If the arm rotates at 100 rpm in clockwise direction about centre of wheel A which is fixed, then speed of wheel on its own axis will be?

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Worm gear is used, when two shafts are at _________

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A simple band brake has the tight side of the band attached to a fixed pivot. The angle of wrap is 280° about a 450-mm diameter drum. A torque of 170 mm is sustained at 900 revs min^-1. If the co-efficient of friction is 0.2 the required belt tension at tight side of the belt will be _____

asked Jan 29, 2022 in Farm Machinery by Olivia (38.9k points)

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The groove angle of the pulley for V-belt drive is usually

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In a simple planetary gear drive, the sun gear is used to give drive a plant carrier mounted with 3 planetary gears, while ring gear is held stationary. If sun gear and all other planetary gears have 20 teeth each and ring gear has 60 teeth, the gear ratio will be __________

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In chain drives the component with a cast throttled wheel is known as _______

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The pitch of a chain is 200 mm. An 8 sprocket is operating at 250 rpm and driving a 25 teeth sprocket through the drain. The tension in the chain is 15 KN. Determine the maximum power.

asked Jan 29, 2022 in Farm Machinery by Olivia (38.9k points)

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The speed reduction in 1^st low gear of tractor box and differential with final drive are 5:1 and 45:1 for a tractor developing 30 KW at engine at an rpm of 2500 with overall efficiency of 85%. The torque is KN-m available at wheel axle?

asked Jan 29, 2022 in Farm Machinery by Olivia (38.9k points)

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In an epicyclic gear train, the sun gear on the input shaft is 20 teeth external gear. The planet gear is a 40 teeth external gear and the ring gear is a 100 teeth internal gear. The ring gear is fixed and the sun gear is rotating at 60 rpm counter clockwise. The arm attached to output shaft will rotate at ________

asked Jan 29, 2022 in Farm Machinery by Olivia (38.9k points)

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A tractor has 1.6 m rear wheel diameter. If the e gear ratio of final drive and differential gear is 5:1 and 4:1 respectively calculate forward speed of tractor in kilometre per hour.

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A single reduction gear of 120 KW with a pinion of 150 mm pitch circle diameter and speed 550 rpm is supported in bearings on either side. Calculate the total load due to power transmission.

asked Jan 29, 2022 in Farm Machinery by Olivia (38.9k points)

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The number of teeth in driving spur gear is 60. The circular pitch of the teeth is 15 mm. the tangential force transmitted is 140 kg. Calculate horsepower transmitted to the driven gear at 180 rpm of driving gear.

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A tractor has 8 forward speeds. The speed ratio varies in exact geometrical progressions. If the speed ratio in highest and lowest gear are 14.9:1 and 108:1, the geometrical constant will be __________

asked Jan 29, 2022 in Farm Machinery by Olivia (38.9k points)

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