1.93 A kW is equivalent to a(n) ________________. A. kg/s^2 B. kL/s C. kPa D. kg
ID: 1842561 • Letter: 1
Question
1.93 A kW is equivalent to a(n) ________________.
A. kg/s^2 B. kL/s C. kPa D. kg/s
1.94 In the equation, x = ay + b, if x is in kW units and a is in 1 / s units, y has to be in what units?
A. kg B. kJ C. s2 D. N
1.95 The ____________ surface forms the border around an open system.
A. Interior B. Control C. Solid D. Surroundings
1.96 A system property that is the same throughout a system in equilibrium is what kind of a property?
A. Extensive Property B. Intensive property C. Force Property D. Surroundings Property
1.97 The ratio of the weight to the mass is _____________.
A. A force property B. USCS unit C. Invariant with altitude D. gravitational acceleration
1.98 The ratio of the system volume to the system mass is the _____________.
A. Specific weight B. Specific volume C. Specific gravity D. Density
1.100 Two rigid tanks with equal volumes are connected by a valve. Initially, one tank is filled with air and the other is evacuated. The valve is now opened. Once equilibrium is reestablished, the system specific volume will be ____________ the original specific volume.
A. One fourth B. Four times C. One-half D. two times
1.101 According to the state postulate, it takes ___________ independent intensive properties to fix the state of a simple compressible system.
A. 1 B. 2 C. 3 D. 4
1.103 What is 326oC in oF?
A. 743 B. 618 C.599 D. 1078
Explanation / Answer
1.93 A kW is equivalent to a(n) kJ/s or Nm/s or kgm^2/s^2.
1.94 In the equation, x = ay + b, if x is in kW then according to dimensional equality principle a*y dimension should be kW that is equlivalent to kJ/s. if a is 1/s then y dimension should be kJ.
1.95 The Control surface forms the border around an open system.
1.96 A system property that is the same throughout a system in equilibrium is Intensive property.
1.97 The ratio of the weight to the mass is gravitational acceleration.(W=mg)or g=W/m.
1.98 The ratio of the system volume to the system mass is the Specific volume. every property per unit mass is specific that property like enthalpy per unit mass is specific enthalphy.
1.100 After connecting two cylinder, Volume is double but mass is same. So specific volume (volume/mass) is double from absolute specific volume.
1.101 The state of a simple compressible system is completely specified by two independent, intensive properties.
1.103 326°C x 1.8 + 32 = 618.8°F.
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