THERMO
問題一覧
1
The pressure reading of 35 psi in kpa is
A. 342.72
2
What is the pressure 8,000 ft (2000 m) below the surface of the ocean? Neglect the compressibility factor, in Si units
B.20.1 Mpa
3
1 torr is equivalent to pressure
D. 1/760 atm
4
4.The barometer reads 29.0 inches (737 mm) of mercury. What is the absolute pressure if a vacuum gage reads 9.5 psi (66 kpa)in Si?
A.32.02 kpa
5
A fluid with a vapor pressure of 0.2 Pa and a specific gravity of 12 is used in a barometer. If the fluids column height is 1 what is the atmospheric pressure?
D. 117.7 Kpa
6
6. A column of water 200 cm high will give a pressure equivalent to:
D. 19,620~N/m²
7
What is the atmospheric pressure on a planet if the pressure is 100 kpa and the gage pressure is 10 kpa?
D. 90 kpa
8
8.The suction pressure of a pump reads 540 mm Hg vaccum. What is the absolute pressure in Kpa?
D 29.3
9
A boiler installed where the atmospheric pressure is 755 mm Hg. Has a pressure 12~kg/cm². What is the absolute in Mpa?
B. 1.277
10
A storage tank contains oil with specific gravity of 0.88 and depth of 20 m. What is the hydrostatic pressur the tank in kg/cm²?
A 1.76
11
Given steam pressure of 900 lb/ft³, temperature of 300°F, specific volume of 5.8 fP/ib. If the specific enthalpy is 9500 ft-lb/lb what is the intermal energy per Ib of the system?
D. 4280
12
What is the equivalent "R of 400°K?
A. 720.60°R
13
If the temperature inside the furnace is 700°K, what is the corresponding reading in °F?
D 800.60
14
If the °F scale is twice the °C scale, what will be the corresponding reading in each scale?
B. 160°C and 320°F
15
What enters the condenser at 25°C and leaves at 40^{\circ}C What is the lemperature difference in F
C. 27
16
Water enters the heater with 28°C and leaves at 75^{\circ}C What is the ternperature change in °F?
C. 84.80
17
The specific grey cubic ercury relative to water is 13.55. What is the specific weight of mercury? The specific weigth of water is 62.4 per foot
B. 132.9 KN/m³
18
An iron block weighs 5 N and has a volume of 200 cm³. What is the density of the block?
C 2550 kg/m³
19
A batch of concrete consisted of 200 lbs fine aggregate, 350 lbs coarse aggregate, 94 lbs, cement, and 5 gallons water. The specific gravity of the sand and gravel may be taken as 2.65 and that of the cement as 3.10. What was the weight of concrete in place per cubic foot?
D. 153 lb
20
A batch of concrete consisted of 200 lbs fine aggregate, 350 lbs coarse aggregate, 94 lbs, cement, and 5 gallons water. The specific gravity of the sand and gravel may be taken as 2.65 and that of the cement as 3.10. How much by weight of cement is required to produce one cubic yard?
D. 567
21
A cylindrical tank 2 m diameter, 3 m high is full of oil if the specific gravity of oil is 0.9, what is the mass of
A. 8482 kg
22
100g of water are mixed with 150 g of alcohol (w=790~kg/m^{3}) What is the specific volume of the assuming the fluids mixed completely
D. 1.20 cm³/kg
23
100 g of water are mixed with 150 g of alcohol (w=790~kg/m^{3}). What is the specific gravity of the assuming the fluids mixed completely?
D. 0.86
24
A spherical tank is full of water that has a total mass of 10,000 kg. if the outside diameter of the tank is 2722 mm, how thick
B. 25 mm
25
A cylindrical tank is filled with water at the rate of 5,000 gal/min. The height of water in the tank after minutes is 20.42 ft.
What is the diameter of the tank?
B. 25 ft
26
Water is flowing through a 1 foot diameter pipe at the rate of 10 ft/sec. What is the volume flow of water flowing?
C. 7.85 m³/sec
27
What is the potential energy of a 500 kg body if it is dropped to a height of 100 m?
A. 490.50 KJ
28
The flow energy of 124 li/min of a fluid passing a boundary to a system is 2 KJ/sec. What is the pressure at
B. 140.39 psi
29
Air and fuel enter a fumace used for home heating. The air has an enthalpy of 302 KJ/kg and the fuel has an enthalpy of 43,207 KJ/kg. The gases leaving the furnace have an enthalpy of 616 KJ/kg. There are 17 kg air kg fuel. The house requires 17.6 KW of heat. What is the fuel consumption per day?
B. 41 kg
30
The power plant furnace bums coal at the rate of 108,200 kg/hr. Air at 100.8 Kpa, 28°C is supplied at the rate of 13.8 kg/kg coal. Determine the volume flow rate of air flow in m³/min.
A. 21,327.64 m³/min
31
Steam Engines a turbine stage with a enthalpy of 3628 KJ/kg at 70 m/sec and leaves the same stage with an KJ/kg and a velocity of 124 m/sec. Calculate the work done by steam
A. 776.76 KJ/kg
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42問 • 1年前問題一覧
1
The pressure reading of 35 psi in kpa is
A. 342.72
2
What is the pressure 8,000 ft (2000 m) below the surface of the ocean? Neglect the compressibility factor, in Si units
B.20.1 Mpa
3
1 torr is equivalent to pressure
D. 1/760 atm
4
4.The barometer reads 29.0 inches (737 mm) of mercury. What is the absolute pressure if a vacuum gage reads 9.5 psi (66 kpa)in Si?
A.32.02 kpa
5
A fluid with a vapor pressure of 0.2 Pa and a specific gravity of 12 is used in a barometer. If the fluids column height is 1 what is the atmospheric pressure?
D. 117.7 Kpa
6
6. A column of water 200 cm high will give a pressure equivalent to:
D. 19,620~N/m²
7
What is the atmospheric pressure on a planet if the pressure is 100 kpa and the gage pressure is 10 kpa?
D. 90 kpa
8
8.The suction pressure of a pump reads 540 mm Hg vaccum. What is the absolute pressure in Kpa?
D 29.3
9
A boiler installed where the atmospheric pressure is 755 mm Hg. Has a pressure 12~kg/cm². What is the absolute in Mpa?
B. 1.277
10
A storage tank contains oil with specific gravity of 0.88 and depth of 20 m. What is the hydrostatic pressur the tank in kg/cm²?
A 1.76
11
Given steam pressure of 900 lb/ft³, temperature of 300°F, specific volume of 5.8 fP/ib. If the specific enthalpy is 9500 ft-lb/lb what is the intermal energy per Ib of the system?
D. 4280
12
What is the equivalent "R of 400°K?
A. 720.60°R
13
If the temperature inside the furnace is 700°K, what is the corresponding reading in °F?
D 800.60
14
If the °F scale is twice the °C scale, what will be the corresponding reading in each scale?
B. 160°C and 320°F
15
What enters the condenser at 25°C and leaves at 40^{\circ}C What is the lemperature difference in F
C. 27
16
Water enters the heater with 28°C and leaves at 75^{\circ}C What is the ternperature change in °F?
C. 84.80
17
The specific grey cubic ercury relative to water is 13.55. What is the specific weight of mercury? The specific weigth of water is 62.4 per foot
B. 132.9 KN/m³
18
An iron block weighs 5 N and has a volume of 200 cm³. What is the density of the block?
C 2550 kg/m³
19
A batch of concrete consisted of 200 lbs fine aggregate, 350 lbs coarse aggregate, 94 lbs, cement, and 5 gallons water. The specific gravity of the sand and gravel may be taken as 2.65 and that of the cement as 3.10. What was the weight of concrete in place per cubic foot?
D. 153 lb
20
A batch of concrete consisted of 200 lbs fine aggregate, 350 lbs coarse aggregate, 94 lbs, cement, and 5 gallons water. The specific gravity of the sand and gravel may be taken as 2.65 and that of the cement as 3.10. How much by weight of cement is required to produce one cubic yard?
D. 567
21
A cylindrical tank 2 m diameter, 3 m high is full of oil if the specific gravity of oil is 0.9, what is the mass of
A. 8482 kg
22
100g of water are mixed with 150 g of alcohol (w=790~kg/m^{3}) What is the specific volume of the assuming the fluids mixed completely
D. 1.20 cm³/kg
23
100 g of water are mixed with 150 g of alcohol (w=790~kg/m^{3}). What is the specific gravity of the assuming the fluids mixed completely?
D. 0.86
24
A spherical tank is full of water that has a total mass of 10,000 kg. if the outside diameter of the tank is 2722 mm, how thick
B. 25 mm
25
A cylindrical tank is filled with water at the rate of 5,000 gal/min. The height of water in the tank after minutes is 20.42 ft.
What is the diameter of the tank?
B. 25 ft
26
Water is flowing through a 1 foot diameter pipe at the rate of 10 ft/sec. What is the volume flow of water flowing?
C. 7.85 m³/sec
27
What is the potential energy of a 500 kg body if it is dropped to a height of 100 m?
A. 490.50 KJ
28
The flow energy of 124 li/min of a fluid passing a boundary to a system is 2 KJ/sec. What is the pressure at
B. 140.39 psi
29
Air and fuel enter a fumace used for home heating. The air has an enthalpy of 302 KJ/kg and the fuel has an enthalpy of 43,207 KJ/kg. The gases leaving the furnace have an enthalpy of 616 KJ/kg. There are 17 kg air kg fuel. The house requires 17.6 KW of heat. What is the fuel consumption per day?
B. 41 kg
30
The power plant furnace bums coal at the rate of 108,200 kg/hr. Air at 100.8 Kpa, 28°C is supplied at the rate of 13.8 kg/kg coal. Determine the volume flow rate of air flow in m³/min.
A. 21,327.64 m³/min
31
Steam Engines a turbine stage with a enthalpy of 3628 KJ/kg at 70 m/sec and leaves the same stage with an KJ/kg and a velocity of 124 m/sec. Calculate the work done by steam
A. 776.76 KJ/kg