Which of the following is the correct statement?
A. For a given compression ratio, both Otto and Diesel cycles have the same efficiency
B. For a given compression ratio, Otto cycle is more efficient than Diesel cycle
C. For a given compression ratio, Diesel cycle is more efficient than Otto cycle
D. The efficiency of Otto or Diesel cycle has nothing to do with compression ratio
Answer: Option B
This Question Belongs to Mechanical Engineering >> Engineering Thermodynamics
Addition of heat at constant pressure to a gas results in
A. Raising its temperature
B. Raising its pressure
C. Raising its volume
D. Raising its temperature and doing external work
Which of the following items is not a path function?
A. Heat
B. Work
C. Kinetic energy
D. Thermal conductivity
An actual engine is to be designed having same efficiency as the Carnot cycle. Such a proposition is
A. Feasible
B. Impossible
C. Possible
D. Possible, but with lot of sophistications
The absolute zero pressure can be attained at a temperature of
A. 0°C
B. -273°C
C. 273 K
D. None of these
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