Refer fig.4. It shows a band brake arrangements. The brake to work with force at A upwards and direction of drum clockwise____.

Related MCQs

• 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 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_____
• 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, 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____.
• In a block brake, when the fulcrum point is below the line of action of friction point, the ratio of effort required for clockwise and counter clockwise rotation is____.
• 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____.
• When the frictional force helps the applied force in applying the brake, the brake is____.
• For ccw direction of drum rotation in fig.2 brake applied if ____.
• The following data refer to a laboratory experiment with rope brake____.Diameter of the flywheel=1m Diameter of the rope = 10mm , Dead weight on the brake = 50kg , Speed of the engine = 200rpm , Spring balance reading = 120N . Find brake power of the engine.