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.

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

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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 3 days ago in Machine Design by Carter (86.7k 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 (86.7k 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 (86.7k points)

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In pivoted block brakes, moment of frictional force about pivot is non zero.

asked 5 days ago in Machine Design by Carter (86.7k points)

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Block brakes are never used in railway trains.

asked Jan 23 in Machine Design by Carter (86.7k 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 3 days ago in Machine Design by Carter (86.7k 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 (86.7k 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 (86.7k 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 5 days ago in Machine Design by Carter (86.7k points)

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

asked 3 days ago in Machine Design by Carter (86.7k points)

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The centrifugal force acting on the shoe can never be omitted.

asked Jan 23 in Machine Design by Carter (86.7k points)

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

asked 5 days ago in Machine Design by Carter (86.7k points)

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Band brake has complex construction with large number of parts.

asked Jan 23 in Machine Design by Carter (86.7k 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 (86.7k 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 average angular velocity during braking period.

asked Jan 22 in Machine Design by Carter (86.7k points)

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In a centrifugal clutch, when the centrifugal force is slightly more than the spring force, shoe begins to move in a radially inward direction.

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A self-locking differential brake and back stop brakes is same thing.

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The wear of band brake is even.

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The energy absorb by brake is always kinetic.

asked Jan 23 in Machine Design by Carter (86.7k points)

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In flexible drives, rotary motion of driving shaft is directly converted to rotary motion of driven shafts

asked Jan 22 in Machine Design by Carter (86.7k points)

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asked 3 days ago in Machine Design by Carter (86.7k points)

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