Problem $1-1$: Multiple Choice Problems:

The effects such as friction, non$-$quasi$-$equilibrium expansion or compression, and heat transfer through a finite temperature difference are called

a$)$ Perpetual$-$motion machines

b$)$ Heat interactions

c$)$ Irreversibilities

d$)$ None of the above

A process is said to be reversible if$,$

a$)$ Only the system can be restored to their original conditions

b$)$ Only the surroundings can be restored to their original conditions.

c$)$ Both the system and the surroundings can be restored to their original conditions.

d$)$ None of the above

A cyclic machine receives $325kJ$ from a $1000K$ reservoir. It rejects $125kJ$ to a $400K$ energy sink and the cycle produces $200kJ$ of work output. This cycle is$,$

a$)$ reversible

b$)$ irreversible

c$)$ impossible

d$)$ None of the above

Cars begin to rust. People gradually age. With enough time, even mountains erode and their precise edges become rounded, why? Because.

a$)$ the entropy increases

b$)$ the enthalpy increases

c$)$ the entropy becomes zeto

d$)$ the enthalpy becomes zero

Which flow process requires that the fluid properties do not change with time or position over the cross section of an inlet or exit.

a$)$ Steady flow

b$)$ Unsteady flow

c$)$ Uniform flow

d$)$ none of the above

Work can be converted to heat directly, but heat cannot be converted to work but only by some devices.

a$)$ True

b$)$ False

A process generally does not occur unless it satisfies both the first and the second laws of thermodynamics.

a$)$ True

b$)$ False

The mass and energy content of the control volume remain constant during a steady$-$flow process.

a$)$ True

b$)$ False