Thermodynamics problems
- 1. One kg of sulphur requires 1 kg of oxygen for complete combustion and produces 2 kg of sulphur dioxide.
Options- A. True
- B. False Discuss
Correct Answer: True
- 2. The ultimate analysis of coal consists of the determination of the percentage of
Options- A. carbon
- B. hydrogen and nitrogen
- C. sulphur and ash
- D. all of these Discuss
Correct Answer: all of these
- 3. The efficiency of the Carnot cycle is (where T1 and T2 = Highest and lowest temperature during the cycle)
Options- A.
- B.
- C.
- D.
Discuss
Correct Answer:
- 4. The fuel mostly used in blast furnace for extracting pig iron from iron ores is
Options- A. hard coke
- B. soft coke
- C. pulverised coal
- D. bituminous coal Discuss
Correct Answer: hard coke
- 5. The heating of a gas at constant pressure is governed by
Options- A. Boyle's law
- B. Charles' law
- C. Gay-Lussac law
- D. Avogadro's law Discuss
Correct Answer: Charles' law
- 6. One kilowatt is equal to
Options- A. 1 N-m/s
- B. 100 N-m
- C. 1000 N-m/s
- D. 1 x 106 N-m/s Discuss
Correct Answer: 1000 N-m/s
- 7. A closed cycle gas turbine works on Joule's cycle.
Options- A. True
- B. False Discuss
Correct Answer: True
- 8. A machine which violates the first law of thermodynamics is known as perpetual motion machine of the second kind.
Options- A. Correct
- B. Incorrect Discuss
Correct Answer: Incorrect
- 9. The amount of heat required to raise the temperature of 1 kg of water through one Kelvin is called
Options- A. specific heat at constant volume
- B. specific heat at constant pressure
- C. kilo-Joule
- D. none of these Discuss
Correct Answer: kilo-Joule
- 10. The universal gas constant (or molar constant) of a gas is the product of
Options- A. molecular mass of the gas and the gas constant
- B. atomic mass of the gas and the gas constant
- C. molecular mass of the gas and the specific heat at constant pressure
- D. molecular mass of the gas and the specific heat at constant volume Discuss
Correct Answer: molecular mass of the gas and the gas constant
More in Mechanical Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.