Mechanical Engineering - Thermodynamics
Exercise :: Thermodynamics - Section 4
16.
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 Diessel cycle has nothing to do with compressioin ratio.
Answer: Option B
Explanation:
17.
The temperature at which the volume of a gas becomes zero is called
A. absolute scale of temperature B. absolute zero temperature C. absolute temperature D. none of these
Answer: Option B
Explanation:
18.
The heating of gas at constant volume is governed by
A. Boyle's law B. Charles' law C. Gay-Lussac law D. Avogadro's law
Answer: Option C
Explanation:
19.
The absolute pressure of a given mass of a perfect gas varies inversely as its volume, when the temperature remains constant. This statement is known as Boyle's law.
Answer: Option A
Explanation:
20.
The fuel mostly used in cement industry and in metallurgical processes is
A. wood charcoal B. bituminous coke C. pulverised coal D. coke
Answer: Option C
Explanation:
