Shock load is a machining term. Shock load is when a sudden intense force is placed on the parts of a machine. The machine often cannot handle the pressure.
A dynamic load arises from the acceleration or deceleration of a "static" load (mass). A shock load occurs when this acceleration or deceleration is very large and the the time frame is very short.
The only difference between a shock load and a gradually applied load is something called an impulse; defined as the integral of a force with respect to time. When a force is applied to a rigid body it changes the momentum of that body. A small force applied for a long time can produce the same momentum change as a large force applied briefly, because it is the product of the force and the time for which it is applied that is important.
dc motors can be operated at no load as well as at load condition.But by using the swin burns test the efficiency can be calculated at no load which is more benficial than load test.At industries this swin burns test is used because for load test we have to give separate supply for the load to run.In no load test that power is saved.
the safe working load is the load the stand can support safely without failure. It Is called safe because it can generally stand up to five times the safe load but one should not intentionally exceed the safe load. Safe load is also called working load or rated load
Buckling Load: It is the highest load at which the column will buckle. Crippling Load: It is the max load beyond that load, it cant use further it becpomes disable to use. The buckling Load < The Crippling Load Safety load= Crippling Load/ Factor of safety