Loss of torque transmitting capacity at high temperatures is called

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Disk brakes have low torque transmitting capacity in high volumes.

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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.

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

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

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Is it possible to prevent back rotation of drum?

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Band brake has complex construction with large number of parts.

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The wear of band brake is even.

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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 solid cast iron disk of mass 1000kg is rotating at 350rpm. Diameter of the disk is 1m and time taken to come to stop the disk by brake is 1.6sec.Square of radius of gyration is 0.2. Calculate the torque capacity of the brake.

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

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Power transmitting capacity of V belts is more than that of flat belt.

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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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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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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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Fabric rubber belts are not widely used as they can’t be operated at high speeds.

asked Jan 23 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.

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Belt, chain and rope are called rigid drives.

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The layer of a belt is generally called as

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 face width of friction lining.

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

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The driving sprocket has 19 teeth and rotates at 1100rpm. The pitch of the chain is 18mm. Calculate the velocity of the chain.

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

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A solid cast iron disk of mass 1000kg is rotating at 350rpm. Diameter of the disk is 1m and time taken to come to stop the disk by brake is 1.6sec.Square of radius of gyration is 0.2. Calculate the angle through which disk rotated during braking period.

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

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Moment of normal force and frictional forces about the pivot axis are 640000N-mm and 250000N-mm respectively. If force acts at a distance of 190mm from the pivoted point, calculate the actuating force.

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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