Engineering Board Exam Reviewer · Thermodynamics · easy

The SI unit of thermal conductivity is:

1. W/m2· K
2. W· m/K2
3. W/m· K
4. J/kg· K

Answer

C. W/m· K

Solution

From q = kA T/L: k = qL/(A T) W· m/( m2· K) = W/m· K. W/m2· K is the unit of the convection coefficient.

More Thermodynamics questions

1. The value of the Stefan–Boltzmann constant is approximately:
2. Heat transfer by convection is governed by:
3. On a psychrometric chart, sensible heating or cooling of air is represented by a:
4. Relative humidity is defined as the ratio of:
5. The temperature of air measured by an ordinary thermometer exposed to air (shielded from radiation) is called the:
6. The coefficient of performance (COP) of a refrigerator is defined as:
7. One ton of refrigeration (TR) is equal to approximately:
8. In a vapor-compression refrigeration system, the refrigerant absorbs heat from the refrigerated space in the:
9. In the dual (limited-pressure) cycle, heat is added:
10. The Stirling cycle consists of:

All Thermodynamics Reviewer questions