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Consider the following statements regarding clutches 1. Dry clutch has higher coefficient of friction compared to wet clutch 2. The torque capacity of wet clutch is high compared to dry clutch. 3. The engagement in a dry clutch is smoother than in case of wet clutch. Which of the above statements is/are correct ?
A centrifugal clutch has four shoes. When the clutch is at rest, each shoe is pulled against a stop by a spring so that it leaves a radial clearance of 10 mm between the shoe and the rim. The pull exerted by the spring is then 700 N. The mass centre of the shoe is 150 mm from the axis of the clutch. If the internal diameter of the rim is 500 mm, the mass of each shoe is 6 kg, the stiffness of each spring is 75 N/mm and the coefficient of friction between the shoe and the rim is 0.35; find the power transmitted by the clutch at 400 r.p.m.
A centrifugal clutch has four shoes. When the clutch is at rest, each shoe is pulled against a stop by a spring so that it leaves a radial clearance of 7.5 mm between the shoe and the rim. The pull exerted by the spring is then 600 N. The mass centre of the shoe is 120 mm from the axis of the clutch. If the internal diameter of the rim is 350 mm, the mass of each shoe is 5 kg, the stiffness of each spring is 60 N/mm and the coefficient of friction between the shoe and the rim is 0.2; find the speed of the centrifugal clutch, if the power transmitted is 40.168 kW.
Consider the following statements: In case of helical gears, teeth are cut at an angle to the axis of rotation of the gears. 1) Helix angle introduces another ratio called axial contact ratio. 2) Transverse contact ratio is equal to axial contact ratio in helical gears. 3) Large transverse contact ratio does not allow multiple teeth to share the load. 4) Large axial contact ratio will cause larger axial force component Which of the above statements are correct?
Which one of the following four addresses is NOT EXACTLY same as the one given below? Cabramatta 360 Elizabeth Drive, 2170 Mount Pritchard, Australia (i) Cabramatta 360 Elizabeth Drive, 2170 Mount Pritchard, Australia (ii) Cabramatta 360 Elizabeth Drive, 2170 Mount Pritchard, Australia (iii) Cabrematta 360 Elizabeth Drive, 2170 Mount Pritchard, Australia (iv) Cabramatta 360 Elizabeth Drive, 2170 Mount Pritchard, Australia
Which one of the following four addresses is NOT EXACTLY same as the one given below?  Kedrick Shaw 72 Glenwood Drive, Thornton, NSW 2322, Australia (i)  Kedrick Shaw  72 Glenwood Drive,  Thornton, NSW 2322, Australia (ii) Kedrick Shaw  72 Glenwood Drive,  Thornton, NSW 2322, Australia (iii) Kedrick Shaw  72 Glenwood Drive,  Thornton, NSW 2322, Australia (iv) Kedrick Shaw  72 Glemwood Drive,  Thornton, NSW 2322, Australia
A single plate clutch, having n = 2, has outer and inner radii 200 mm and 175 mm respectively. The maximum intensity of pressure at any point is 0.05 N/mm2. If the µ is 0.4 and the power generated by the clutch is equal to 32.384 kW, determine the speed of the clutch.
In a conical clutch, what is the axial force required for engaging the clutch (We)?
In a conical clutch, what is the axial force required for disengaging the clutch (Wd)?
A conical friction clutch is used to transmit 50 kW at 1000 r.p.m. The semi cone angle is 15° and the coefficient of friction is 0.2. If the mean diameter of the bearing surface is 450 mm and the intensity of normal pressure is not to exceed 0.15 N/mm2, find the axial spring force necessary to engage the clutch.