Канал: GR Engineering

4.32 Refrigerant 134a enters a well-insulated nozzle at 200 lbf/in.2, 220°F, with a velocity of 120

4.32 Refrigerant 134a enters a well-insulated nozzle at 200 lbf/in.2, 220°F, with a velocity of 120

4.29 Refrigerant 134a flows at steady state through a horizontal tube having an inside diameter of

4.29 Refrigerant 134a flows at steady state through a horizontal tube having an inside diameter of

Three forces act on the bracket. Determine the magnitude and direction θ of F so that the resultant

Three forces act on the bracket. Determine the magnitude and direction θ of F so that the resultant

4.18 Refrigerant 134a enters the evaporator of a refrigeration system operating at steady state at

4.18 Refrigerant 134a enters the evaporator of a refrigeration system operating at steady state at

Express F1, F2, and F3 as Cartesian vectors.

Express F1, F2, and F3 as Cartesian vectors.

4.110 A tank whose volume is 0.01 m3 is initially evacuated. A pinhole develops in the wall, and air

4.110 A tank whose volume is 0.01 m3 is initially evacuated. A pinhole develops in the wall, and air

Determine the magnitude of the resultant force FR= F1+ F2 and its direction, measured clockwise from

Determine the magnitude of the resultant force FR= F1+ F2 and its direction, measured clockwise from

The force acting on the gear tooth is F = 20 N. Resolve this force into two components acting along

The force acting on the gear tooth is F = 20 N. Resolve this force into two components acting along

If F1=30N and F2=40N, determine the angles θ and φ so that the resultant force is directed along the

If F1=30N and F2=40N, determine the angles θ and φ so that the resultant force is directed along the

4.39 Refrigerant 134a enters an insulated diffuser as a saturated vapor at 80°F with a velocity of

4.39 Refrigerant 134a enters an insulated diffuser as a saturated vapor at 80°F with a velocity of

4.6 If a kitchen-sink water tap leaks one drop per second, how many gallons of water are wasted

4.6 If a kitchen-sink water tap leaks one drop per second, how many gallons of water are wasted

4.34 Air with a mass flow rate of 2.3 kg/s enters a horizontal nozzle operating at steady state at

4.34 Air with a mass flow rate of 2.3 kg/s enters a horizontal nozzle operating at steady state at

Determine the magnitude and direction θ of FA so that the resultant force is directed along the

Determine the magnitude and direction θ of FA so that the resultant force is directed along the

6.40 Air contained in a rigid, insulated tank fitted with a paddle wheel, initially at 4 bar, 40°C

6.40 Air contained in a rigid, insulated tank fitted with a paddle wheel, initially at 4 bar, 40°C

If the resultant force acting on the support is to be 1200 N, directed horizontally to the right,

If the resultant force acting on the support is to be 1200 N, directed horizontally to the right,

4.24 Refrigerant 134a enters a horizontal pipe operating at steady state at 40°C, 300 kPa, and a

4.24 Refrigerant 134a enters a horizontal pipe operating at steady state at 40°C, 300 kPa, and a

If the resultant force of the two tugboats is 3kN, directed along the positive x axis, determine the

If the resultant force of the two tugboats is 3kN, directed along the positive x axis, determine the

Determine the magnitude of the resultant force and its direction, measured counterclockwise from the

Determine the magnitude of the resultant force and its direction, measured counterclockwise from the

Determine the magnitude of the resultant force FR = F1 + F2 and its direction, measured

Determine the magnitude of the resultant force FR = F1 + F2 and its direction, measured

6.25 Water within a piston–cylinder assembly, initially at 10 lbf/in2, 500°F undergoes an internally

6.25 Water within a piston–cylinder assembly, initially at 10 lbf/in2, 500°F undergoes an internally

4.68 As shown in Fig. P4.68, a power washer used to clean the siding of a house has water entering

4.68 As shown in Fig. P4.68, a power washer used to clean the siding of a house has water entering

3.21 As shown in Fig. P3.21 0.1 kg of water is contained within a piston–cylinder assembly at 100°C.

3.21 As shown in Fig. P3.21 0.1 kg of water is contained within a piston–cylinder assembly at 100°C.

4.36 Nitrogen, modeled as an ideal gas, flows at a rate of 3 kg/s through a well-insulated

4.36 Nitrogen, modeled as an ideal gas, flows at a rate of 3 kg/s through a well-insulated

4.57 At steady state, a well-insulated compressor takes in nitrogen at 60°F, 14.2 lbf/in.2, with a

4.57 At steady state, a well-insulated compressor takes in nitrogen at 60°F, 14.2 lbf/in.2, with a

4.93 A horizontal constant-diameter pipe with a build-up of debris is shown in Fig. P4.93.

4.93 A horizontal constant-diameter pipe with a build-up of debris is shown in Fig. P4.93.

4.72 Oil enters a counterflow heat exchanger at 450 K with a mass flow rate of 10 kg/s and exits at

4.72 Oil enters a counterflow heat exchanger at 450 K with a mass flow rate of 10 kg/s and exits at

4.75 An air-conditioning system is shown in Fig. P4.75 in which air flows over tubes carrying

4.75 An air-conditioning system is shown in Fig. P4.75 in which air flows over tubes carrying

A system consisting of 1 kg of water undergoes a power cycle composed of the following processes:

A system consisting of 1 kg of water undergoes a power cycle composed of the following processes:

6.145 Air enters the compressor of a gas turbine power plant operating at steady state at 290 K, 100

6.145 Air enters the compressor of a gas turbine power plant operating at steady state at 290 K, 100

4.59 Refrigerant 134a enters an air conditioner compressor at 4 bar, 20°C, and is compressed at

4.59 Refrigerant 134a enters an air conditioner compressor at 4 bar, 20°C, and is compressed at

4.51 Steam at 1800 lbf/in.2 and 1100°F enters a turbine operating at steady state. As shown in Fig.

4.51 Steam at 1800 lbf/in.2 and 1100°F enters a turbine operating at steady state. As shown in Fig.

6.18 Steam enters a turbine operating at steady state at 1 MPa, 200°C and exits at 40°C with a

6.18 Steam enters a turbine operating at steady state at 1 MPa, 200°C and exits at 40°C with a

6.30 One-tenth kg of a gas in a piston–cylinder assembly undergoes a Carnot power cycle for which

6.30 One-tenth kg of a gas in a piston–cylinder assembly undergoes a Carnot power cycle for which

4.52 Hot combustion gases, modeled as air behaving as an ideal gas, enter a turbine at 145 lbf/in.2

4.52 Hot combustion gases, modeled as air behaving as an ideal gas, enter a turbine at 145 lbf/in.2

4.42 Steam enters a well-insulated turbine operating at steady state at 4 MPa with a specific

4.42 Steam enters a well-insulated turbine operating at steady state at 4 MPa with a specific

4.65 As shown in Fig. P4.65, a pump operating at steady state draws water from a pond and delivers

4.65 As shown in Fig. P4.65, a pump operating at steady state draws water from a pond and delivers

4.49 Water vapor enters a turbine operating at steady state at 500°C, 40 bar, with a velocity of 200

4.49 Water vapor enters a turbine operating at steady state at 500°C, 40 bar, with a velocity of 200

4.37 As shown in Fig. P4.37, air enters the diffuser of a jet engine operating at steady state at 18

4.37 As shown in Fig. P4.37, air enters the diffuser of a jet engine operating at steady state at 18

4.47 Steam enters a turbine operating at steady state with a mass flow of 10 kg/min, a specific

4.47 Steam enters a turbine operating at steady state with a mass flow of 10 kg/min, a specific

Determine the magnitude and direction of the resultant force. Give the direction as an angle

Determine the magnitude and direction of the resultant force. Give the direction as an angle

4.35 Helium gas flows through a well-insulated nozzle at steady state.

4.35 Helium gas flows through a well-insulated nozzle at steady state.

4.58 Air enters a compressor operating at steady state with a pressure of 14.7 lbf/in2 a temperature

4.58 Air enters a compressor operating at steady state with a pressure of 14.7 lbf/in2 a temperature

4.46 A well-insulated turbine operating at steady state develops 28.75 MW of power for a steam flow

4.46 A well-insulated turbine operating at steady state develops 28.75 MW of power for a steam flow

4.17 As shown in Fig. P4.17, air with a volumetric flow rate of 15,000 ft3/min enters an

4.17 As shown in Fig. P4.17, air with a volumetric flow rate of 15,000 ft3/min enters an

4.15 Liquid water flows isothermally at 208°C through a one-inlet, one-exit duct operating at steady

4.15 Liquid water flows isothermally at 208°C through a one-inlet, one-exit duct operating at steady

6.22 A system consisting of 2 kg of water initially at 160°C, 10 bar undergoes an internally

6.22 A system consisting of 2 kg of water initially at 160°C, 10 bar undergoes an internally

3.63 A closed, rigid tank filled with water, initially at 20 bar, a quality of 80%, and a volume of

3.63 A closed, rigid tank filled with water, initially at 20 bar, a quality of 80%, and a volume of

3.33 Two kg of Refrigerant 134A undergoes a polytropic process in a piston–cylinder assembly from an

3.33 Two kg of Refrigerant 134A undergoes a polytropic process in a piston–cylinder assembly from an

2.76 Figure P2.76 shows a power cycle executed by a gas in a piston–cylinder assembly.

2.76 Figure P2.76 shows a power cycle executed by a gas in a piston–cylinder assembly.

2.75 The following table gives data, in Btu, for a system undergoing a power cycle consisting of

2.75 The following table gives data, in Btu, for a system undergoing a power cycle consisting of

3.78 A system consisting of 1 kg of H2O undergoes a power cycle composed of the following processes:

3.78 A system consisting of 1 kg of H2O undergoes a power cycle composed of the following processes:

2.58 A closed system of mass 10 kg undergoes a process during which there is energy transfer by work

2.58 A closed system of mass 10 kg undergoes a process during which there is energy transfer by work

4.100 Separate streams of air and water flow through the compressor and heat exchanger arrangement

4.100 Separate streams of air and water flow through the compressor and heat exchanger arrangement

4.87 A well-insulated tank in a vapor power plant operates at steady state.

4.87 A well-insulated tank in a vapor power plant operates at steady state.

6.42 A rigid, insulated container fitted with a paddle wheel contains 5 lb of water, initially at

6.42 A rigid, insulated container fitted with a paddle wheel contains 5 lb of water, initially at

2.59 As shown in Fig. P2.59, a gas contained within a piston–cylinder assembly initially at a volume

2.59 As shown in Fig. P2.59, a gas contained within a piston–cylinder assembly initially at a volume

A particular power generation system operates on the simple ideal Brayton cycle, across a pressure

A particular power generation system operates on the simple ideal Brayton cycle, across a pressure

4.60 Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at

4.60 Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at

4.53 Air enters a compressor operating at steady state at 1.05 bar, 300 K, with a volumetric flow

4.53 Air enters a compressor operating at steady state at 1.05 bar, 300 K, with a volumetric flow

4.31 Steam enters a nozzle operating at steady state at 20 bar, 2808°C, with a velocity of 80 m/s.

4.31 Steam enters a nozzle operating at steady state at 20 bar, 2808°C, with a velocity of 80 m/s.

4.20 Figure P4.20 provides steady-state data for water vapor flowing through a piping configuration.

4.20 Figure P4.20 provides steady-state data for water vapor flowing through a piping configuration.

4.4 Air modeled as an ideal gas enters a combustion chamber at 20 lbf/in^2 (psi) and 708°F

4.4 Air modeled as an ideal gas enters a combustion chamber at 20 lbf/in^2 (psi) and 708°F

4.3 Steam enters a 1.6 cm-diameter pipe at 80 bar and 600°C with a velocity of 150 m/s.

4.3 Steam enters a 1.6 cm-diameter pipe at 80 bar and 600°C with a velocity of 150 m/s.

4.2 Refrigerant 134a exits a heat exchanger through 0.75-in diameter tubing with a mass flow rate

4.2 Refrigerant 134a exits a heat exchanger through 0.75-in diameter tubing with a mass flow rate

4.1 A laser Doppler velocimeter measures a velocity of 8 m/s as water flows in an open channel.

4.1 A laser Doppler velocimeter measures a velocity of 8 m/s as water flows in an open channel.

6.79 Air enters a turbine operating at steady state at 8 bar, 1400 K and expands to 0.8 bar.

6.79 Air enters a turbine operating at steady state at 8 bar, 1400 K and expands to 0.8 bar.

4.16 Air enters a one-inlet, one-exit control volume at 6 bar, 500 K, and 30 m/s

4.16 Air enters a one-inlet, one-exit control volume at 6 bar, 500 K, and 30 m/s

4.55 Refrigerant 134a enters a compressor operating at steady state as saturated vapor.

4.55 Refrigerant 134a enters a compressor operating at steady state as saturated vapor.

4.19 As shown in Fig. P4.19, steam at 80 bar, 4408°C, enters a turbine operating at steady state.

4.19 As shown in Fig. P4.19, steam at 80 bar, 4408°C, enters a turbine operating at steady state.

4.5 Air exits a turbine at 200 kPa and 1508°C with a volumetric flow rate of 7000 liters/s.

4.5 Air exits a turbine at 200 kPa and 1508°C with a volumetric flow rate of 7000 liters/s.

4.8 Figure P4.8 shows a mixing tank initially containing 2000 lb of liquid water.

4.8 Figure P4.8 shows a mixing tank initially containing 2000 lb of liquid water.

4.48 Steam enters a turbine operating at steady state at 2 MPa, 360C with a velocity of 100 m/s.

4.48 Steam enters a turbine operating at steady state at 2 MPa, 360C with a velocity of 100 m/s.

4.80 Steam enters a counterflow heat exchanger operating at steady state at 0.07 MPa.

4.80 Steam enters a counterflow heat exchanger operating at steady state at 0.07 MPa.

Air is compressed at a steady state from 1 bar, 300 K, to 6 bar with a mass flow rate of 4kg/s.

Air is compressed at a steady state from 1 bar, 300 K, to 6 bar with a mass flow rate of 4kg/s.

Water is in an expandable container that maintains mechanical equilibrium with the atmosphere.

Water is in an expandable container that maintains mechanical equilibrium with the atmosphere.

Three steam lines enter a collection tank operating at steady state.

Three steam lines enter a collection tank operating at steady state.

Carbon dioxide is sealed in a piston-cylinder system. The initial volume of CO2 is 0.1 m^3.

Carbon dioxide is sealed in a piston-cylinder system. The initial volume of CO2 is 0.1 m^3.

The specific volume of water contained in a tank at 200 psi is 1.5 ft3/lbm.

The specific volume of water contained in a tank at 200 psi is 1.5 ft3/lbm.

A gas inside a piston-cylinder assembly undergoes the following sequence of processes:

A gas inside a piston-cylinder assembly undergoes the following sequence of processes:

A piston-cylinder assembly contains 1.5 lbm of gas undergoing a thermodynamic process 1 to 2.

A piston-cylinder assembly contains 1.5 lbm of gas undergoing a thermodynamic process 1 to 2.

Using the method of joints, determine the type of force in member ‘AD’ of the below shown truss.

Using the method of joints, determine the type of force in member ‘AD’ of the below shown truss.

If θ (theta) = 60° (degrees), and F = 450 N, determine the magnitude of the resultant force

If θ (theta) = 60° (degrees), and F = 450 N, determine the magnitude of the resultant force