Engineering Board Exam Reviewer · Thermodynamics · easy

Relative humidity is defined as the ratio of:

1. Mass of water vapor to mass of dry air
2. Actual vapor partial pressure to saturation pressure at the same dry-bulb temperature
3. Wet-bulb temperature to dry-bulb temperature
4. Mass of water vapor to mass of moist air

Answer

B. Actual vapor partial pressure to saturation pressure at the same dry-bulb temperature

Solution

= Pv/Pg. The ratio of vapor mass to dry-air mass is the humidity ratio.

More Thermodynamics questions

1. The temperature of air measured by an ordinary thermometer exposed to air (shielded from radiation) is called the:
2. The coefficient of performance (COP) of a refrigerator is defined as:
3. One ton of refrigeration (TR) is equal to approximately:
4. In a vapor-compression refrigeration system, the refrigerant absorbs heat from the refrigerated space in the:
5. In the dual (limited-pressure) cycle, heat is added:
6. The Stirling cycle consists of:
7. The Brayton cycle is the ideal cycle for:
8. The Otto cycle is the ideal cycle for:
9. The Carnot cycle consists of:
10. A perpetual motion machine of the second kind (PMM2) violates the:

All Thermodynamics Reviewer questions