What is the difference between preventative maintenance and predictive maintenance?
What will be an ideal response?
Preventative maintenance: provided through inspection, cleaning, lubrication, and adjustment of equipment or assemblies to ensure proper operation. Predictive maintenance: the repair or replacement of equipment or components based on analysis of data accumulated during the preventative maintenance process.
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Give the Fourier coefficients a?, an, and bn of the waveform in Fig. 17.47. Plot the amplitude and phase spectra.
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A cam is a machine part used to convert constant rotary motion into timed irregular motion.
Answer the following statement true (T) or false (F)
It is more difficult to assemble hubless cast iron pipe than hubbed cast iron pipe.
Answer the following statement true (T) or false (F)
When should the engine crankcase oil level be checked?
A. engine running B. immediately after shutdown C. at least 5 minutes after shutdown D. weekly