PrepBharat

1. Diesel cycle is also known as _____________
a) constant volume cycle
b) constant pressure cycle
c) constant temperature cycle
d) none of the mentioned

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2. A diesel engine has compression ratio from ________
a) 6 to 10
b) 10 to 15
c) 16 to 20
d) 25 to 40

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3. In Diesel cycle, heat addition takes place at ___________
a) constant temperature
b) constant pressure
c) constant volume
d) none of the mentioned

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4. The combustion in compression ignition engine is __________
a) homogeneous
b) heterogeneous
c) laminar
d) none of the mentioned

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5. In a diesel engine, the fuel is ignited by _____________
a) spark
b) injected fuel
c) heat resulting from compressing air that is supplied for combustion
d) combustion chamber

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6. The thermal efficiency of a diesel cycle having fixed compression ratio, with increase in cut-off ratio will ____________
a) increase
b) decrease
c) be independent
d) none of the mentioned

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7. The pressure at the end of compression, in diesel engines, is approximately ____________
a) 10 bar
b) 20 bar
c) 25 bar
d) 35 bar

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8. What is the combustion in spark ignition engine?.
a) homogeneous
b) heterogeneous
c) laminar
d) none of the mentioned

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9. If the temperature of intake air in I.C. engine is lowered, then its efficiency will __________
a) increase
b) decrease
c) remain same
d) increase up to a certain limit and then decrease

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10. The fuel in diesel engine is normally injected at pressure of _______
a) 5-10 kg/cm²
b) 20-25 kg/cm²
c) 60-80 kg/cm²
d) 90-130 kg/cm²

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