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1 | |
If the units of x are kJ/kg-s and the units of t are s, what are the units of q in the equation below?
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| | A) | kJ |
| | B) | kJ/kg |
| | C) | kJ/kg-s2 |
| | D) | kW |
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2 | |
In thermodynamics, a fixed quantity of mass selected for the purpose of study is called a: |
| | A) | system |
| | B) | closed system |
| | C) | open system |
| | D) | control volume |
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3 | |
A specific property is also: |
| | A) | an extensive property |
| | B) | the product of two extensive properties |
| | C) | an amount of mass dependent property |
| | D) | an intensive property |
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4 | |
In order for a system to be in thermal equilibrium, which of the following properties must be the same throughout the system? |
| | A) | mass |
| | B) | pressure |
| | C) | temperature |
| | D) | volume |
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5 | |
A cycle consists of a series of processes that: |
| | A) | eventually return to the first state of the first process |
| | B) | are continually repeated |
| | C) | are always in equilibrium or quasi-equilibrium |
| | D) | none of these |
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6 | |
How many independent properties are required to completely specify the state of a simple compressible system? |
| | A) | 0 |
| | B) | 1 |
| | C) | 2 |
| | D) | 3 |
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7 | |
A 0.5 m3 container is filled with a fluid whose specific volume is 0.001 m3/kg. At standard gravitational acceleration, the contents of this container weigh: |
| | A) | 2010 N |
| | B) | 3220 N |
| | C) | 4900 N |
| | D) | 7830 N |
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8 | |
Which temperature below is equivalent to 125 °F? |
| | A) | 52 °C |
| | B) | 125 °C |
| | C) | 602 °R |
| | D) | 315 K |
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9 | |
On a day when the barometer reads 755 mmhg, a tire pressure gage reads 204 kPa. The absolute pressure in the tire is: |
| | A) | 100 kPa |
| | B) | 204 kPa |
| | C) | 1.54 mHg |
| | D) | 2.29 mHg |
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10 | |
The fan pressure differential gage on an air handler reads 12 cmH2O. What is this pressure differential in kiloPascels? |
| | A) | 0 kPa |
| | B) | 0.93 kPa |
| | C) | 1.18 kPa |
| | D) | 1.37 kPa |
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2002 McGraw-Hill Higher Education