In an internal expanding shoe brake, more than 50% of the total braking torque is supplied by____.

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
• 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.
• A short shoe brake has angle of contact less than____degree.
• 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 simple band brake, when direction of rotation of drum is changed from counter clockwise direction, the braking torque____.
• In a self locking brake, the force required to apply the brake is_____.
• When the frictional force helps the applied force in applying the brake, the brake is____.
• Refer fig.4. It shows a band brake arrangements. The brake to work with force at A upwards and direction of drum clockwise____.
• 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.
• In case of flat pivot bearing the frictional torque transmitted for uniform pressure as compared to the frictional torque transmitted for uniform wear_____.