A. Carbonization of bituminous coal
B. Partial combustion of coal, coke, anthracite coal or charcoal in a mixed air steam blast
C. Passing steam over incandescent coke
D. Passing air and a large amount of steam over waste coal at about 650°C
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
ينتج الغاز من احتراق جزئي للفحم أو فحم الكوك أو الانثراسايت أو إنفجار الفحم في خلط الماء والبخار عند ٦٥٠ درجة مئوية