Factors such as brake shoe orientation, pin location, and direction of rotation determine whether a particular brake shoe is con
1 answer:
Answer:
Self energizing brake shoe produces more Torque
Explanation:
Attached below is the sketches of the various cases
<u>The cases are :</u>
case 1 ; deenergizing
case 2 ; self energizing
case 3 ; produces high braking torque
For a brake to be self energizing when the Frictional torque and braking torque are in the same direction
<em>summary from equation 3 </em>
when: b > uc the brake is controllable
b = uc It is self locking
b < uc The brake is uncontrollable
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Answer:
5.6 mm
Explanation:
Given that:
A cylindrical tank is required to contain a:
Gage Pressure P = 560 kPa
Allowable normal stress = 150 MPa = 150000 Kpa.
The inner diameter of the tank = 3 m
In a closed cylinder there exist both the circumferential stress and the longitudinal stress.
Circumferential stress
Making thickness t the subject; we have
t = 0.0056 m
t = 5.6 mm
For longitudinal stress.
t = 0.0028 mm
t = 2.8 mm
From the above circumferential stress and longitudinal stress; the stress with the higher value will be considered ; which is circumferential stress and it's minimum value with the maximum thickness = 5.6 mm