Select the incorrect statement from
below about good quality lubricating oils.
अच्छी गुणवत्ता वाले श्यानता वाले तेलों के बारे में नीचे से गलत कथन का चयन करें।
They assist oil sealing of piston
during operation
They should have low viscosity at low
temperature for ease of starting
They reduce frictional resistance in bearings
They do not affect the mechanical
efficiency of the engine
They do not affect the mechanical
efficiency of the engine
Lubricating oil should have following
qualities :
●They should have low viscosity and
high viscosity index to low temperature for ease of starting.
●They assist oil sealing of piston
during operation.
●The mechanical efficiency increases
when lubricating oil is used properly because it reduces the friction in
bearings during motion.
●It should be high resisted to
oxidation.
Hence, the correct option is (D).
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