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
When cut-off ratio is ________; the efficiency of Diesel cycle approaches to Otto cycle efficiency
A $$\frac{1}{4}$$
B Zero
C $$\frac{1}{5}$$
D 2
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
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
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
Carnot cycle efficiency depends upon
A Properties of the medium/substance used
B Condition of engine
C Working condition
D Temperature range of operation
Efficiency of a heat engine working on Carnot cycle between two temperature levels depends upon the
A Two temperatures only
B Pressure of working fluid
C Mass of the working fluid
D Mass and pressure both of the working fluid
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

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