A. 0.17
B. 0.24
C. 0.1
D. 1.41
E. 2.71
Related Mcqs:
- The index of compression n tends to reach ratio of specific heats y when____________________?
A. flow is uniform and steady
B. process is isentropic
C. process is isothermal
D. process is isentropic and specific heat does not change with temperature
E. process is isentropic and specific heat changes with temperature - Specific heat of air at constant pressure is equal to___________________?
A. 0.17
B. 0.21
C. 0.24
D. 1.0
E. 1.41 - The more effective way of increasing efficiency of Carnot engine is to____________________?
A. increase higher temperature
B. decrease higher temperature
C. increase lower temperature
D. decrease lower temperature
E. keep lower temperature constant - The specific heat of air increases with increase in __________________?
A. temperature
B. pressure
C. both pressure and temperature
D. variation of its constituents
E. air flow - Which law states that the specific heat of a gas remains constant at all temperatures and pressures______________________?
A. Charles’ Law
B. Joule’s Law
C. Regnault’s Law
D. Boyle’s Law
E. there is no such law - Change in enthalpy in a closed system is equal to heat transferred if the reversible process takes place at constant________________?
A. pressure
B. temperature
C. volume
D. internal energy
E. entropy - An engine operates between temperatures of 900°Kandr2 and another engine between T2 and 400°K For both to do equal work, value of T2 will be________________?
A. 650°K
B. 600°K
C. 625°K
D. 700°K
E. 750°K - One watt is equal to__________________?
A. 1 Nm/s
B. 1 N/mt
C. 1 Nm/hr
D. 1 kNm/hr
E. 1 kNm/mt - If a gas is heated against a pressure, keeping the volume constant, then work done will be equal to__________________?
A. + v
B. – ve
C. zero
D. pressure x volume
E. any where between zero and infinity - Characteristic gas constant of a gas is equal to______________________?
A. C/Cv
B. Cv/Cp
C. Cp – Cv
D. Cp + Cv
E. Cp x Cv
