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WorksheetsValve timing and Losses in IC engine
Total questions: 10
Worksheet time: 3mins
In an actual 4 stroke SI engine, inlet valve opens...
At TDC
At BDC
before TDC
Before BDV
In an actual 4 stroke SI engine, exhaust valve opens...
At TDC
At BDC
Before TDC
Before BDC
Valve overlap is when
Inlet valve is delayed
Exhaust valve is stuck
Valve timing is not matched
Both inlet and exhaust valves are open
Loss due to progressive combustion is...
Exhaust blow down
Direct heat loss
Time loss
Pumping loss
In the given figure, highest loss is..
Time loss
Heat loss
Exhaust blow down
Pumping
Exhaust blow down is due to
Progressive combustion
Early opening of exhaust valve
Heat loss from exhaust gases
Early opening of inlet valve
The cycle described in the figure is
Diesel cycle
Dual cycle
Otto cycle
Carnot cycle
In an actual 4 stroke SI engine, inlet valve is closed
At TDC
At BDC
Before BDC
After BDC
Specific heat generally
Increases with temperature
Decreases with temperature
Remains constant
Is universal
In an Otto cycle, heat addition occurs at
Constant temperature
Constant volume
Constant pressure
Constant entropy
