A journal bearing has a journal diameter of 3.000 in, with a unilateral tolerance of 0.001 in. The bushing bore has a diameter of 3.005 in and a unilateral tolerance of 0.004 in. The bushing is 1.5...

An airfoil at an angle of attack α, as in Fig P3.150, provides lift by a Bernoulli effect, because the lower surface slows the flow (high pressure) and the upper surface speeds up the flow (low...

Glycerin at 20C is to be pumped through a horizontal smooth pipe at 3.1 m3/s. It is desired that (1) the flow be laminar and (2) the pressure drop be no more than 100 Pa/m. What is the minimum pipe...

Consider a concentric tube heat exchanger with hot and cold water inlet temperatures of 200 and 35C, respectively. The flow rates of the hot and cold fluids are 42 and 84 kg/h, respectively. Assume...

A process is perturbed by a sinusoidally varying input, u(t), whose amplitude is A and whose frequency is w. The resulting process output relation is given by (a) What must have been the differential...

A process control system contains the following (a) Show how GOL(s) can be approximated by a FOPTD model; Find K, , and for the open-loop process transfer function (b) Use Routh stability methods...

Consider the following data collected on a single helical coil extension spring with an initial extension Fi and a spring rate k suspected of being related by the equation F = Fi + kx where x is the...

Ethylene glycol flows at 0.0 I kg/s through a 3-mm-diameter, thin-walled tube. The tube is coiled and sub-merged in a well-stirred water bath maintained at 25C. If the fluid enters the tube at 85C,...

The production of most of the steel manufactured in the United States begins with the reduction of hematite ore (mostly ferric oxide) with coke (carbon) in a blast furnace to obtain pig iron. The...

Consider the directionally selective surface having the directional emissivity ??, as shown. Assuming that the surface is isotropic in the ? direction, calculate the ratio of the normal emissivity...

A plane wal1 of thickness 0.6 m (L = 0.3 m) is made of steel (k = 30 W/m K. p = 7900 kg/m 3 , c = 640 J/kg K). It is initially at a uniform temperature and is then exposed to air on both surfaces....

Two-bulb experiment for measuring gas diffusivitiesmanalytical solution (Fig. 18B.6) this experiment, described in Problem 18B.6, is analyzed there by a quasi-steady-state method. The method of...

Fifty milliliters of 100% H2SO4 at 25C and 84.2 mL of liquid water at 15C are mixed. The heat capacity of the product solution is 2.43 J/ (gC). Estimate the maximum temperature attainable by the...

A fuel gas is known to contain methane ethane, and carbon monoxide. A sample of the gas is charged into an initially evacuated 2.000-liter vessel at 25C and 2323 mm Hg absolute. The vessel is weighed...

In open heart surgery under hypothermic conditions, the patient's blood is cooled before the surgery and re-warmed afterward. It is proposed that a concentric tube, counter flow heat exchanger of...

A system is composed of four processes, { P 1 , P 2 , P 3 , P 4 }, and three types of serially reusable resources, { R 1 , R 2 , R 3 }. The number of units of the resources are C = <3, 2, 2>. a....

Repeat Prob. 377 with T = 900 lbf · in, a = 6 in, b = 5 in, c = 10 in, d = 1.375 in, e = 4 in, f = 10 in, and g = 6 in. Repeat Prob. 377, A torque T = 100 N · m is applied to the shaft...

Ascorbic acid (0.010 0 M) was added to 10.0 mL of 0.020 0 M Fe 3+ in a solution buffered to pH 0.30, and the potential was monitored with Pt and saturated Ag | AgCl electrodes. Dehydroascorbic acid +...

Assuming Raoult's law to apply to the system n-pentane (1) In-hcptand(2), (a) What arc the values of x1 and y1 at t = 55C und P = 1/2 (P1sat + P2sat)? For these conditions plot the fraction of system...

An insulated rigid tank is initially evacuated. A valve is opened, and atmospheric air at 95 kPa and 17C enters the tank until the pressure in the tank reaches 95 kPa, at which point the valve is...

Liquid water at 120 kPa enters a 7-kW pump where its pressure is raised to 5 MPa. If the elevation difference between the exit and the inlet levels is 10 m, determine the highest mass flow rate of...

A refrigerator that operates on the ideal vapor compression cycle with refrigerant-134a is to maintain the refrigerated space at -10C while rejecting heat to the environment at 25C. Select reasonable...

A 0.08-m3 well-insulated rigid tank contains oxygen at 220 K and 10 MPa. A paddle wheel placed in the tank is turned on, and the temperature of the oxygen rises to 250 K. Using the generalized...

A gas initially at a supersonic velocity enters an adiabatic diverging duct. Discuss how this affects (a) the velocity, (b) the temperature, (c) the pressure, and (d) the density of the fluid.

Determine the moments of inertia Iu , Iv and the product of inertia Iuv for the beam's cross-sectional area. Given: = 45 deg a = 8 in b = 2 in c = 2 in d = 16 in -a b'b

The truss shown consists of six members and is supported by two short links at each of the joints A, B, and C. Determine the force in each of the members f or P= − (940 N)j and Q = 0.

The caustic concentration of the mixing tank shown in figure is measured using a conductivity cell. The total volume of solution in the tank is constant at 7 ft3 and the density (? = 70 lb/ft3) can...

Carbon steel balls (r = 7833 kg/m3 and cp = 0.465 kJ/kg ¢ °C) 8 mm in diameter are annealed by heating them first to 900°C in a furnace and then allowing them to cool slowly to 100°C...

Disk B has an angular velocity 0 when it is brought into contact with disk A, which is at rest. Show that (a) The final angular velocities of the disks are independent of the coefficient of friction...

A linear delta modulator is designed to operate on speech signals limited to 3.4 kHz; the specifications of the modulator are as follows: Sampling rate = l0 Nyquist , where Nyquist is the Nyquist...

An 8-molar hydrochloric acid solution [SG = 1.12, Cp = 2.76 J/ (gC)] is produced by absorbing hydrogen chloride [HC1 (g)] in water. Liquid water enters the absorber at 25C and gaseous HCJ is fed at...

A radiation detector has an aperture of area Ad = 10-6 m2 and is positioned at a distance of r = 1 m from a surface of area A, = 10-4 m2. The angle formed by the normal to the detector and the...

Is it possible to alloy copper with nickel to achieve a minimum tensile strength of 375MPa (54,400psi) and yet maintain an electrical conductivity of 2.5 x 106 (ohm-m)-1? If not, why? If so, what...

Is it possible to maintain a pressure of 10 kPa in a condenser that is being cooled by river water entering at 20C?

The concrete pipe at A rests on top of B and C. If the coefficient of static friction between the pipes is s and at the ground 's, determine their smallest values so that the pipes will not slip....

Knowing that the pulley has a radius of 1.25 in., determine the components of the reactions at B and E. 3 in. 4.5 in. D. 3.75 in. E. 75 lb

The cooled effluent passes through a carbon filter in which the soot is removed. The clean gas is then compressed and fed to an absorption column, where it is contacted with a recycled liquid solvent...

A -Y-connected bank of three identical 100-kVA, 2400-V: 120-V, 60-Hz transformers is supplied with power through a feeder whose impedance is 0.065 + j0.87 per phase. The voltage at the sending end...

Isobutane expands adiabatically in a turbine from 5,000 kPa and 250oC to 500 kPa at the rate of 0.7 kg mol s-1. If the turbine efficiency is 0.80, w hat is the power output of the turbine and what is...

The blank for the spool shown in the accompanying figure is to be sand cast out of A-319, an aluminum casting alloy. Make a sketch of the wooden pattern for this part. Include all necessary allowance...

A garden hose is used as the return line in a waterfall display at the mall. In order to select the proper pump, you need to know the hose wall roughness, which is not supplied by the manufacturer....

A proposal is made to use a geothermal supply of hot water to operate a steam turbine, as shown in Fig. P6.46. The high-pressure water at 1.5 MPa, 180C, is throttled into a flash evaporator...

Two tanks contain steam, and they are both connected to a piston/cylinder. Initially the piston is at the bottom and the mass of the piston is such that a pressure of 1.4 MPa below it will be able to...

Wet lumber of the type in figure is slowly dried from an initial total moisture content of 50 wt% to a moisture content in equilibrium with atmospheric air at 25?C and 40% relative humidity....

A 3-ft3 rigid tank initially contains refrigerant-134a at 100 psia and 100 percent quality. The tank is connected by a valve to a supply line that carries refrigerant-134a at 140 psia and 80F. The...

A printed circuit board (PCB) is cooled by laminar, fully developed air flow in adjoining, parallel-plate channels of length L and separation distance a. The channels may be assumed to be of infinite...

Force on a water tower in a gale, a water tower has a spherical storage tank 40 ft in diameter. In a 100-mph gale what is the force of the wind on the spherical tank at 0C? Take the density of air to...

Is it possible to produce an iron-carbon alloy of eutectoid composition that has a minimum hardness of 90 HRB and a minimum ductility of 35%RA? If so, describe the continuous cooling heat treatment...

Carbon dioxide enters an adiabatic compressor at 100 kPa and 300 K at a rate of 0.5 kg/s and leaves at 600 kPa and 450 K. Neglecting kinetic energy changes, determine (a) The volume flow rate of the...

A cylinder/piston contains saturated vapor R-22 at 10C; the volume is 10 L. The R-22 is compressed to 2 MPa, 60C in a reversible (internally) polytropic process. If all the heat...

Unsteady annular flows? (a) Obtain a solution to the Navier-Stokes equation for the start-up of axial annular flow by a sudden impressed pressure gradient. Check your result against the published...

A mixture containing 35.0 mole% n-butane and the balance isobutene at 10C enters a he3t exchanger at a rate of 24.5k mol/h and a pressure high enough for the mixture to be a liquid. The exchanger has...

A row of regularly spaced cylindrical heating elements is used to maintain an insulated furnace wall at 500 K. The opposite wall is at a uniform temperature of 300 K. The insulated wall experiences...

Radioactive copper-64 decays with a half-life of 12.8 days. a. What is the value of k in s-1? b. A sample contains 28.0 mg 64Cu. How many decay events will be produced in the first second? Assume...

Water at 20°C flows steadily at 40 kg/s through the nozzle in Fig P3.13, If D1 = 18 cm and D2 = 5 cm, compute the average velocity, in m/s, at (a) section 1 and (b) section 2.

Which process requires more energy: completely vaporizing 1 kg of saturated liquid water at 1 atm pressure or completely vaporizing 1 kg of saturated liquid water at 8 atm pressure?

The wedge is used to level the floor of a building. For the floor loading shown, determine the horizontal force P that must be applied to move the wedge forward. The coefficient of static friction...

Determine the polar moment of inertia of the area shown with respect to (a) Point O, (b) The centroid of the area. 80 60 -40-- 40-- 40 -- 40-| Dimensions in mm

We wish to determine the effect of adding a layer of magnesia insulation to the steam pipe of the foregoing problem. The convection coefficient at the outer surface of the insulation may be assumed...

Inadequacy of mean hydraulic radius for laminar flow (a) For laminar flow in an annulus with radii kR and Rr use Eqs. 6.2-17 and 18 to get an expression for the average velocity in terms of the...

A PCM system uses a uniform quantizer followed by a 7-bit binary encoder. The hit rate of the system is equal to 50 x 106b/s (a) What is the maximum message bandwidth for which the system operates...

(a) Verify that Equation 16.11, the expression for the fiber load???matrix load ratio (Ff/Fm), is valid. (b) What is the Ff/Fc ratio in terms of Ef, Em, andVf? E,V, F EV F, (16.11)

Problem 5.98: For the stop bracket shown, locate the x coordinate of the center of gravity. Problem 5.99: For the stop bracket shown, locate the z coordinate of the center of gravity.

Consider the cascade control system in Fig. E. (a) Specify K c2 so that the gain margin ?1.7 and phase margin ?30 ? for the slave loop. (b) Then specify and K c1 and ? I? for the master loop using...

The ventilating fan of the bathroom of a building has a volume flow rate of 30 L/s and runs continuously. If the density of air inside is 1.20 kg/m3, determine the mass of air vented out in one day.

Using the Gibbs function data, determine the equilibrium constant KP for the reaction H2 + 1/2 O2 H2O at (a) 298 K and (b) 2000 K. Compare your results with the KP values listed in Table A28.

Determine the components of the reactions at A and E when a counterclockwise couple of magnitude120 N m is applied to the frame (a) At B, (b) At D. 100mm - 400 mm 250 m

Steel framing members AB, BC, and CD are joined at B and C and are braced using cables EF and EG. Knowing that E is at the midpoint of BC and that the tension in cable EG is 445 N, determine (a) The...

Two cables of the same gauge are attached to a transmission tower at B. Since the tower is slender, the horizontal component of the resultant of the forces exerted by the cables at B is to be zero....

A particle moves in a straight line with the velocity shown in the figure. Knowing that x = ?? 48 ft at t = 0, draw the a??t and x??t curves for 0 (a) The maximum value of the position coordinate of...

A 300-g collar can slide on a horizontal rod which is free to rotate about a vertical shaft. The collar is initially held at A by a cord attached to the shaft and compresses a spring of constant 5...

The following data apply to a 125-kW, 2300-V, three-phase, four pole, 60-Hz squirrel-cage induction motor: Stator-resistance between phase terminals = 2.23 . No-load test at rated frequency and...

Water in a 150-L closed, rigid tank is at 100C, 90% quality. The tank is then cooled to 10C. Calculate the heat transfer during the process.

For laminar flow over a flat plate, the local heat transfer coefficient h. is known to vary as x1/2, where x is the distance from the leading edge (x = 0) of the plate. What is the ratio of the...

A vertical array of circuit boards of 150-mm height is to be air cooled such that the board temperature does not exceed 60C when the ambient temperature is 25C. Assuming isothermal surface...

A reciprocating air compressor has a 5-ft-diameter flywheel 14 in wide, and it operates at 170 rev/min. An eight-pole squirrel-cage induction motor has nameplate data 50 bhp at 875 rev/min. (a)...

A 2-kW electric resistance heater submerged in 5-kg water is turned on and kept on for 10 min. During the process, 300 kJ of heat is lost from the water. The temperature rise of water is (a) 0.4C (d)...

The gas-turbine portion of a combined gassteam power plant has a pressure ratio of 16. Air enters the compressor at 300 K at a rate of 14 kg/s and is heated to 1500 K in the combustion chamber. The...

In a paper mill drying process, a sheet of paper slurry (water-fiber mixture) has a linear velocity of 5 m1s as it is rolled. Radiant heaters maintain a sheet temperature of T s = 330 K, as...

A Bode diagram for a process, valve, and sensor is shown in figure.(a) Determine an approximate transfer function for this system.(b) Suppose that a proportional controller is used and that a value...

A double-pipe heat exchanger with a partial bypass for the cold stream is shown in Figure. The mass flow rate of the hot stream wh, and the bypass fraction, f, can be manipulated. Heat losses can be...

A minivan traveling 90 km/h has just passed through a thunderstorm that left a film of water 0.1 mm thick on the top of the van. The top of the van can be assumed to be a flat plate 6 m long. Assume...

The surface of a 50-mm-diameter, thin-walled tube is maintained at 100C. In one case air is in cross flow over the tube with a temperature of 25C and a velocity of 30 m/s. In another case air is in...

In gas adsorption a vapor is transferred from a gas mixture to the surface of a solid. (See Section 6.7) An approximate but useful way of analyzing adsorption is to treat it simply as condensation of...

A flat plate is in a solar orbit 150,000,000 km from the sun. It is always oriented normal to the rays of the sun and both sides of the plate have a finish which has a spectral absorptance of 0.95 at...

The steel beam ABCD shown is supported at C as shown and supported at B and D by shoulder steel bolts, each having a diameter of 8 mm. The lengths of BE and DF are 50 mm and 65 mm, respectively. The...

Our D = 0.625-in-diameter hose is too short, and it is 125 ft from the d = 0.375-in-diameter nozzle exit to the garden. If losses are neglected, what is the minimum gage pressure required, inside the...

In large steam power plants, the feedwater is frequently heated in closed feedwater heaters, which are basically heat exchangers, by steam extracted from the turbine at some stage. Steam enters the...

Two waves on string are given by the following functions: y1(x, t) = 4cos (20t 30x) (cm), y2(x, t) = - 4cos (20t + 30x) (cm), Where x is in centimeters the waves are said to interfere constructively...

The C-bracket is supported at A, B, and C by rollers. Determine the reactions at the supports. Given: a = 3 ft b = 4 ft θ1 = 30 deg θ2 = 20 deg F = 200 lb B.

A 1.8-kg uniform rod is supported by a pin at O and a spring at A and is connected to a dashpot at B. Determine (a) The differential equation of motion for small oscillations, (b) The angle that the...

Two men exert forces of F = 80 lb and P = 50 lb on the ropes. Determine the moment of each force about A. Which way will the pole rotate, clockwise or counterclockwise? 6ft 12

Replace the force system acting on the post by a resultant force, and specify where its line of action intersects the post AB measured from pointB. 0.5 m B. 500 N 250 N 0.2 m 30 300 N

The frame is used to support the 50-kg cylinder. Determine the force of the pin at C on member ABC and on memberCD. 0,8 m 0.8 m- 100 mm 400 mm 1.2 m

Refrigerant-134a enters a compressor as a saturated vapor at 200 kPa at a rate of 0.03 m3/s and leaves at 700 kPa. The power input to the compressor is 10 kW. If the surroundings at 20C experience an...

If the input Ym to a P1 controller changes stepwise (Ym(s) = 2/s) and the controller output changes initially as in figure, what are the values of the controller gain and integraltimes? ple) Slope =...

The energy consumption associated with a home water heater has two components: (i) the energy that must be supplied to bring the temperature of groundwater to the heater storage temperature, as it is...

Consider the system of Problem 5.1 where the temperature of the plate is space wise isothermal during the transient process. (a) Obtain an expression for the temperature of the plate as a function of...

In the helicopter shown, a vertical tail rotor is used to prevent rotation of the cab as the speed of the main blades is changed. Assuming that the tail rotor is not operating, determine the final...

Using MATLAB, plot the Bode diagram of the following transfer function: Repeat for the situation where the time-delay term is replaced by a 1/1 Padapproximation. 6(s + 1)e (4s + 1)(2s + 1) G(s)