Related Questions

Otto cycle efficiency is higher than Diesel cycle efficiency for the same compression ratio and heat input because in Otto cycle
A Heat rejection is lower
B Expansion and compression are isentropic
C Combustion is at constant volume
D Maximum temperature is higher
When cut-off ratio is __________ the efficiency of Diesel cycle approaches to Otto cycle efficiency.
A Zero
B $$\frac{1}{5}$$
C $$\frac{4}{5}$$
D 1
The efficiency of Diesel cycle approaches to Otto cycle efficiency when
A Cut-off is decreased
B Cut-off is constant
C Cut-off is increased
D Cut-off is zero
For the same compression ratio, the efficiency of Diesel cycle is __________ Otto cycle.
A Greater than
B Less than
C Equal to
D None of these
The air standard efficiency of an Otto cycle compared to diesel cycle for the given compression ratio is
A Same
B Less
C More
D More or less depending on power rating
Air standard Otto cycle is more efficient than the diesel cycle for the same
A Heat addition & compression ratio
B Heat addition & pressure
C Compression ratio & pressure
D Cylinder dimension & rpm
The efficiency of an Otto engine compared to that of a diesel engine, for the same compression ratio will be
A More
B Less
C Same
D Data insufficient to predict
Compressibility factor of a real gas is the ratio of the actual volume to that predicted by ideal gas law. As the pressure of the gas approaches zero, the compressibility factor approaches
A ∞
B 0
C 1
D 0.24
Otto cycle used in spark ignition petrol engines is also known as the constant __________ cycle.
A Volume
B Pressure
C Heat
D None of these
The efficiency of the dual combustion cycle for the same compression ratio is __________ Diesel cycle.
A Greater than
B Less than
C Equal to
D None of these

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