For a new friction lining, uniform wear theory is used.

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A cone clutch transmits 24kW at 490rpm. The coefficient of friction is 0.2 and allowable intensity of pressure is 0.35N/mm². The semi cone angle is 12⁰. The outer diameter is fixed as 310mm.Assuming uniform wear theory; find the face width of friction lining.

asked Jan 27 in Machine Design by Carter (89.5k points)

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A plate clutch consists of 1 pair of contacting surfaces. The inner and outer diameter of the friction disk is 100mm and 200mm respectively. The coefficient of friction is 0.2 and permissible intensity of pressure is 1.5N/mm². Assuming uniform wear theory, calculate the power transmitting capacity of the clutch at 80rad/s.

asked Feb 2 in Machine Design by Carter (89.5k points)

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A plate clutch consists of 1 pair of contacting surfaces. The inner and outer diameter of the friction disk is 100mm and 200mm respectively. The coefficient of friction is 0.2 and permissible intensity of pressure is 1.5N/mm². Assuming uniform wear theory, calculate the operating force in the clutch.

asked Jan 27 in Machine Design by Carter (89.5k points)

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A cone clutch transmits 24kW at 490rpm. The coefficient of friction is 0.2 and allowable intensity of pressure is 0.35N/mm². The semi cone angle is 12⁰. The outer diameter is fixed as 310mm.Assuming uniform wear theory; find the inner diameter.

asked Jan 23 in Machine Design by Carter (89.5k points)

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A plate clutch consists of 1 pair of contacting surfaces. The inner and outer diameter of the friction disk is 100mm and 200mm respectively. The coefficient of friction is 0.2 and permissible intensity of pressure is 1.5N/mm². Assuming uniform wear theory, calculate the torque transmitting capacity of the clutch.

asked Jan 23 in Machine Design by Carter (89.5k points)

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A cone clutch transmits 24kW at 490rpm. The coefficient of friction is 0.2 and allowable intensity of pressure is 0.35N/mm². The semi cone angle is 12⁰. The outer diameter is fixed as 310mm.Assuming uniform wear theory; find the maximum torque which is transmitted.

asked Jan 23 in Machine Design by Carter (89.5k points)

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A plate clutch consists of 1 pair of contacting surfaces. The inner and outer diameter of the friction disk is 100mm and 200mm respectively. The coefficient of friction is 0.2 and permissible intensity of pressure is 1.5N/mm². Assuming uniform pressure theory, calculate the operating force in the clutch.

asked Jan 23 in Machine Design by Carter (89.5k points)

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A pivoted double block brake has a drum radius of 280mm with two shoes subtending an angle of 100⁰. Maximum pressure intensity is 0.5N/mm². If the width of friction lining is 90mm, find the torque capacity f each shoe. Assume coefficient of friction as 0.2.

asked Feb 2 in Machine Design by Carter (89.5k points)

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The intensity of normal pressure between the friction lining and the brake drum at any point is proportional to square of the vertical distance from the pivot.

asked Jan 23 in Machine Design by Carter (89.5k points)

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The pressure intensity at an element on long shoe brake varies directly with the sin of the pressure angle of the element of friction lining.

asked Jan 21 in Machine Design by Chris (52.6k points)

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Wear ultimately results in ride in of the chain on sprocket teeth.

asked Feb 2 in Machine Design by Carter (89.5k points)

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Chain drives suffer from wear problems.

asked Jan 25 in Machine Design by Carter (89.5k points)

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The wear of band brake is even.

asked Jan 23 in Machine Design by Carter (89.5k points)

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Eddy current clutch is a type of friction clutch.

asked Feb 2 in Machine Design by Carter (89.5k points)

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If torque capacity of a block brake is 240N-m and radius of drum is 210mm with coefficient of friction 0.4.

asked Jan 23 in Machine Design by Carter (89.5k points)

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In a block brake with short shoe, it is assumed that friction force and normal reaction are concentrated at the midpoint of the shoe.

asked Jan 23 in Machine Design by Carter (89.5k points)

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In drum brakes, as the temperature increases coefficient of friction ______

asked Feb 2 in Machine Design by Carter (89.5k points)

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In roller chains, there is sliding friction between roller and sprocket teeth.

asked Feb 2 in Machine Design by Carter (89.5k points)

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When semi vertical angle is greater than angle of static friction, clutch results in self-engagement.

asked Jan 25 in Machine Design by Carter (89.5k points)

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Power is transmitted only by key and friction in the cone clutch.

asked Jan 23 in Machine Design by Carter (89.5k points)

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In positive contact clutches, power transmission is achieved by means of friction.

asked Jan 23 in Machine Design by Carter (89.5k points)

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The equivalent coefficient of friction in case of block brake with long shoe is denoted by μ[4Sinθ/2θ+sin4θ].

asked Jan 23 in Machine Design by Carter (89.5k points)

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The coefficient of friction in internally expanding brakes is constant.

asked Jan 23 in Machine Design by Carter (89.5k points)

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Disk brakes can be used for opposite rotation of disk also.

asked Feb 2 in Machine Design by Carter (89.5k points)

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In internally expanding brake, a large actuating force produces a small braking torque and hence this brake isn’t used generally.

asked Feb 2 in Machine Design by Carter (89.5k points)

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