Answer:
Plain Bearings and Rolling Element Bearings -
Explanation:
two different type of bearing are:
1) Plain Bearings - Plain bearings are the easiest form of bearings and consist of only the layer of the bearings without rolling components.
2)Rolling Element Bearings - Rolling element bearings use balls or rollers between two rings – allowing movement with little rotating and sliding friction. These type of bearings include bearings for balls and rollers.
Answer:
B. 152.64
Explanation:
The average value of a sinusoidal waveform taken over half cycle is given by
or simplifying it further results in;
We are given
Hence option B is the right answer
Please note:
The average value of a pure sinusoidal wave over a full cycle (0 to 360°) is always zero since the positive and negative half cancel out each other due to being symmetric.
This is why we always take average over half cycle (0 to 180°).
It means that the action is not permitted