Mechanical Engineering - Thermodynamics
Exercise :: Thermodynamics - Section 4
6.
The principal constituents of a fuel are
A. carbon and hydrogen B. oxygen and hydrogen C. sulphur and oxygen D. sulphur and hydrogen
Answer: Option A
Explanation:
7.
In an extensive property of a thermodynamic system
A. extensive heat is transferred B. extensive work is done C. extensive energy is utilised D. none of these
Answer: Option D
Explanation:
8.
When a gas is heated at constant pressure
A. its temperature will increase B. its volume will increase C. both temperature and volume will increase D. neither temperature not volume will increase
Answer: Option C
Explanation:
9.
By decreasing the highest temperature in the Carnot cycle, its efficiency is increased.
Answer: Option B
Explanation:
10.
Workdone during adiabatic expansion is given by (where p 1 v 1 , T 1 = Pressure, volume and temperature for the initial condition of gas, p 2 , v 2 , T 2 = Corresponding values for the final condition of gas, R = Gas constant, and γ = Ratio of specific heats)
Answer: Option D
Explanation:
