Anti-Friction and Journal Bearing
Explain difference between the Anti-Friction Bearing and the Journal Bearing?
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Usually, journal bearings have the higher friction force, consume more energy and liberate more heat, but they do have the larger contact surface, thus normally it is used in the low speed high load applications. In the anti friction bearings, the friction is less. One object rolls over one another.
Explain the reason behind formation of the Cavitation in the Centrifugal Pump and not in the Displacement Pump?
Draw a frequency-response curves for a damped single degree of freedom system subjected to a harmonic excitation under three different damping ratios. System has a natural frequency of ωn as the forcing frequency of the excitation is ω. Describe
You are working in a company that has developed a process to produce DNA vaccines from E.coli. After the fermentation step a lysis step is used to release the DNA from the cells resulting in a sticky mixture. You find that an aggressive cleaning solution heated to 80°C is required to
The pump illustrated in the figure adds 20 kW of power to the flowing water. The only vital loss is that which takes place across the filter at the inlet of the pump. Find out the head loss for this filter. Note that the gage pressure upstream of the filter is negativ
Explain why the Centrifugal Pump is not known as the Positive Displacement Type of Pump?
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For safe turbine operation how many governors are generally required and Why?
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