Turbocharger engines are those in which charge density is increased by
A. Separate air compressors
B. Compressors driven by exhaust gas turbine
C. Cooling inlet air
D. None of the above
Answer: Option B
This Question Belongs to Automobile Engineering >> Performance And Testing Of Engines
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Mechanical efficiency of an automobile engine usually varies in the range:
A. 50% - 60%
B. 60% - 70%
C. 70% - 90%
D. More than 90%
A. Increase
B. Decrease
C. Independent
D. None of the above
How many times in a minute does each valve on a 4-stroke engine running at 2000 rpm open and close?
A. 1000
B. 2000
C. 4000
D. 6000
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