For ccw direction of drum rotation in fig.2 brake applied if ____.

Related MCQs

• A single block brake as shown in Fig.6 has a brake drum diameter of 1m and the angle of contact is 300. It takes 280 Nm torque at 300rpm. The coefficient of friction is 0.35. Determine the required force 'P' to be applied when the rotation of drum is clockwise.
• In a simple band brake applied to a shaft carrying a flywheel of mass 250kg and radius of gyration 350mm , one end of the band is attached to the fulcrum and the other at a distance 300 mm from the fulcrum. The angle embraced by the band is 2250 and the brake drum diameter is 220 mm coefficient of friction 0.25 and the shaft speed is 300 rpm clockwise. Determine the brake torque when a force of 150 N is applied
• In a simple band brake, when direction of rotation of drum is changed from counter clockwise direction, the braking torque____.
• In a differential band brake, the effort required for clockwise rotation of drum compared to counterclockwise rotation is____.
• Refer fig.4. It shows a band brake arrangements. The brake to work with force at A upwards and direction of drum clockwise____.
• In a band brake the ratio of tight side band tension to the tension on the slack side is 3. If the angle of band on the drum is 1800 the coefficient of friction required between drum and band is_____
• When the frictional force helps the applied force in applying the brake, the brake is____.
• For above question determine the required force 'P' to be applied when the rotation of drum is anticlockwise.
• In a differential band brake, as shown in fig.1the length OA is greater than OB. In order to apply the brake, the force at C should____.
• In a self locking brake, the force required to apply the brake is_____.