Choose the Correct Answer: 1- During throttling process (a) internal energy does not change (c) entropy does not change (b) pressure does not change (d) enthalpy does not chang 2- The processes or systems that do not involve heat are called (a) isothermal processes (c) steady processes (b) equilibrium processes (d) adiabatic processes. 3-A definite area or space where some thermodynamic process takes place is known as (a) thermodynamic system (c) thermodynamic process (b) thermodynamic cycle (d) thermodynamic law. 4- the effect of the Regenerative and reheat on thermal efficiency of the cycle are (a) decreases (c) does not affect (b) increases (d) may increase or decrease. (b) enthalpy (c) entropy 5- Second law of thermodynamics defines.. (a) heat and work (d) internal energy. 6- If all the variables of a stream are independent of time it is said to be in....... (a) uniform flow (c) steadyflow 7- The gas constant (R) is equal to the (a)sum of two specific heats (c)product of two specific heats (b) unsteady flow (d) closed flow (b)difference of two specific heats (d)ratio of two specific heatsi Good Luck