A long conducting rod of rectangular cross section (20mm X 30mm) and thermal conductivity k = 20 W/m K experiences uniform heat generation at a rate q = 5 X 107 W/m3 , while its surfaces are...

By showing the primary and secondary connections of three single-phase transformers, illustrate the following three-phase transformer connections: starstar, and stardelta. What is the relationship...

A stirred-tank blending system initially is full of water and is being fed pure water at a constant flow rate, q. At a particular time, an operator adds caustic solution at the same volumetric how...

The label has come off a cylinder of gas in your laboratory. You know only that one species of gas is contained in the cylinder, but you do not know whether it is hydrogen oxygen, or nitrogen. To...

A solar pond operates on the principle that heat losses from a shallow layer of water, which acts as a solar absorber, may be minimized by establishing a stable vertical salinity gradient in the...

A 0.5-kg block B slides without friction inside a slot cut in arm OA which rotates in a vertical plane. The motion of the rod is defined by the relation = 10 rad/s2 , constant. At the instant when ...

Oxygen (O2) gas within a piston-cylinder assembly undergoes an expansion from a volume V1= 0.01 m3 to volume V2 = 0.03 m3. The relationship between pressure and volume during the process is p=AV-1+B,...

Vapor?liquid equilibrium calculations can sometimes be simplified through the use of a quantity called the relative volatility, which may be defined to terms of the following depiction of vapor and...

A certain application requires a ball bearing with the inner ring rotating, with a design life of 25 kh at a speed of 350 rev/min. The radial load is 2.5kN and an application factor of 1.2 is...

Resolve the force F1 into components acting along the u and v axes and determine the components. Given: F1 = 25 lb F2 = 50 lb θ1 = 30 deg θ2 = 30 deg θ3 = 45 deg Fx 02 0

The towline exerts force P at the end of the crane boom of length L. Determine the placement x of the hook at A so that this force creates a maximum moment about point O. What is this moment? Unit...

If Ts Tsur in Equation 1.9, the radiation heat transfer coefficient may be approximated as hr,a = 4T3 where T (Ts + Tsur)/2. We wish to assess the validity of this approximation by comparing values...

The tooth numbers for the automotive differential shown in the figure are N2 = 16, N3 = 48, N4 = 14, N5 = N6 = 20. The drive shaft turns at 900 rev/min. (a) What are the wheel speeds if the car is...

A 50.0-L tank contains an air?carbon tetrachloride gas mixture at an absolute pressure of 1 atm, a temperature of 34?C, and a relative saturation of 30%. Activated carbon is added to the tank to...

The figure shows the free-body diagram of a connecting-link portion having stress concentration at three sections. The dimensions are r = 0.25 in, d = 0.75 in, h = 0.50 in, w1 = 3.75 in, and w2 = 2.5...

Dehydration of natural gas is necessary to prevent the formation of gas hydrates, which can plug valves and other components of a gas pipeline, and also to reduce potential corrosion problems. Water...

Steam produced in a boiler is frequently wetthat is. it is a mist composed of saturated water vapor and entrained liquid droplets. The quality of a wet steam is defined as the fraction of the mixture...

Consider the fuel cell stack of Problem 1.58. The t = 0.42 rum thick membranes have a nominal thermal conductivity of k = 0.79 W/m K that can be increased to keff,x = 15.1 W/m K by loading 10%, by...

Carbon dioxide contained in a pistoncylinder device is compressed from 0.3 to 0.1 m3. During the process, the pressure and volume are related by P = aV-2, where a = 8 kPa m6. Calculate the work done...

Determine VD for the fixed-bias configuration of Fig. 7.84. 18 V DSS 2 4 V FIG. 7.84 Problem 5.

Consider a U-tube whose arms are open to the atmosphere. Now equal volumes of water and light oil (r = 49.3 lbm/ft3) are poured from different arms. A person blows from the oil side of the U-tube...

Determine the maximum weight of the engine that can be supported without exceeding a tension of T1 in chain AB and T2 in chain AC. Given: θ = 30 deg T1 = 450 lb T2 = 480 lb

For the given loading of the beam AB, determine the range of values of the mass of the crate for which the system will be in equilibrium, knowing that the maximum allowable value of the reactions at...

Performance of an electric dust collector (see Fig. 2C.1) 5 (a) A dust precipitator consists of a pair of oppositely charged plates between which dust-laden gases flow. It is desired to establish a...

A steel alloy contains 97.5 wt% Fe, 2.0 wt% Mo, and 0.5 wt% C. (a) What is the eutectoid temperature of this alloy? (b) What is the eutectoid composition? (c) What is the proeutectoid phase? Assume...

An experiment to determine the convection coefficient associated with airflow over the surface of a thick stainless steel casting involves insertion of thermocouples in the casting at distances of 10...

A gas that contains CO 2 is contacted with liquid water in an agitated batch absorber. The equilibrium solubility of CO 2 in water is given by Henrys law (Section 6.4b) C A = p A/ H A where C A...

A pistoncylinder device contains 0.5 lbm of water initially at 120 psia and 2 ft3. Now 200 Btu of heat is transferred to the water while its pressure is held constant. Determine the final temperature...

Determine the moment of inertia for the beams cross-sectional area about the x' axis passing through the centroid C of the cross section. Given: a = 100 mm b = 25 mm c = 200 mm = 45 deg a

A thin flat plate of length L, thickness t, and width W > L is thermally joined to two large heat sinks that are maintained at a temperature To. The bottom of the plate is well insulated, while the...

The motion of rod AB is guided by pins attached at A and B which slide in the slots shown. At the instant shown, = 30? and the pin at A moves downward with a constant velocity of 225 mm/s. Determine...

A 4-kg slender rod is welded to the edge of a 3-kg uniform disk as shown. The assembly rotates about A in a vertical plane under the combined effect of gravity and of the vertical force P. Knowing...

A storage tank consists of a cylindrical section that has a length and inner diameter of L = 2 m and Di = 1 m, respectively, and two hemispherical end sections. The tank is constructed from...

Velocity and temperature profiles for laminar flow in a tube of radius ro = 10 mm have the form u (r) = 0.1 [1 (r/r o ) 2 ] T(r) = 344.8 + 75.0(r/r o )2 18.8(r/r o ) 4 with units of m/s and K....

As a means of preventing ice formation on the wings of a small, private aircraft, it is proposed that electric resistance heating elements be installed within the wings. To determine representative...

A force P is applied to a bent rod which is supported by a roller and a pin and bracket. For each of the three cases shown, determine the internal forces at point J. D. Fig. P7.21

A 10-kg cylinder D, which is attached to a small pulley B, is placed on the cord as shown. Determine the largest angle so that the cord does not slip over the peg at C. The cylinder at E has a mass...

Steam expands isentropically in a converging/diverging nozzle from inlet conditions of 1,400 kPa. 325oC and negligible velocity to a discharge pressure of 140 kPa. At the throat the cross-sectional...

Determine the smallest couple moment which can be applied to the wheel of weight W1 that will cause impending motion. The cord is attached to the block of weight W2, and the coefficients of static...

The two shafts a speed-reducer unit are subjected to couples of magnitude M1 = 18 N m and M2 = 7.5 N m, respectively. Replace the two couples with a single equivalent couple, specifying its magnitude...

Table B.2 lists values of the heat capacity of liquid ethanol at two temperatures. Use the tabulated values to derive a linear expression for Cp (T); then use the derived expression and data in Table...

A pistoncylinder device contains helium gas initially at 150 kPa, 20°C, and 0.5 m3. The helium is now compressed in a polytropic process (PVn = constant) to 400 kPa and 140°C. Determine the...

Air contained within a piston cylinder assembly undergoes three processes in series: Process 1-2: Compression at constant pressure from P1=10 lbf/in2, V1= 4ft3 to state 2. Process 2-3:...

Upper and lower surfaces of a bus bar are convectively cooled by air at T with hu h1. The sides are cooled by maintaining contact with heat sinks at To, through a thermal contact resistance of Rt,c...

Fabrication of a parabolic mirror, it is proposed to make a backing for a parabolic mirror, by rotating a pan of slow-hardening plastic resin at constant speed until it hardens. Calculate the...

Hydrogen is produced in the steam reforming of propane: C 3 H 8 (g) + 3 H 2 O (v) ? 3 CO 2 (g) + 7 H 2 (g) the water?gas shift reaction also takes place in the reactor, leading to the formation of...

Member ABCD is supported by a pin and bracket at C and by an inextensible cord attached at A and D and passing over frictionless pulleys at B and E. Neglecting the size of the pulleys, determine the...

As shown in Fig.P1.41m, air is contained in a vertical piston-cylinder assembly fitted with an electrical resistor. The atmosphere exerts a pressure of 14.lbf/in2 on the top piston, which has a mass...

When kaolinite clay [Al2(Si2O5)(OH)4] is heated to a sufficiently high temperature, chemical water is driven off. (a) Under these circumstances, what is the composition of the remaining product (in...

A straight bar of arbitrary cross section and thickness h is cold-formed to an inner radius R about an anvil as shown in the figure. Some surface at distance N having an original length L AB will...

A heat pump is used to maintain a house at 22°C by extracting heat from the outside air on a day when the outside air temperature is 2°C. The house is estimated to lose heat at a rate of...

In considering the following problems involving heat transfer in the natural environment (outdoors), recognize that solar radiation is comprised of long and short wavelength components. If this...

In a supercomputer, signal propagation delays are reduced by resorting to high-density circuit arrangements which are cooled by immersing them in a special dielectric liquid. The fluid is pumped in a...

Sections of the trans-Alaska pipeline run above the ground and are supported by vertical steel shafts (k = 25 W/m K) that are 1 m long and have a cross-sectional area of 0.005 m2. Under normal...

Knowing that crank AB rotates about point A with a constant angular velocity of 900 rpm clockwise, determine the acceleration of the piston P when = 60?. 6.

The reaction A ? B is carried out in a laboratory reactor. According to a published article the concentration of A should vary with time as follows: C A = C AO exp (? kt) where C AO is the initial...

A heat-treated steel shaft is to be designed to support the spur gear and the overhanging worm shown in the figure. A bearing at A takes pure radial load. The bearing at B takes the worm-thrust load...

The temperature controller for a clothes dryer consists of a bimetallic switch mounted on an electrical heater attached to a wall-mounted insulation pad. The switch is set to open at 70C, the maximum...

The force F = {6i + 8j + 10k} N creates a moment about point O of MO = {?14i + 8j + 2k} N ? m. If the force passes through a point having an x coordinate of 1 m, determine the y and z coordinates of...

A 1-m3 tank containing air at 25C and 500 kPa is connected through a valve to another tank containing 5 kg of air at 35C and 200 kPa. Now the valve is opened, and the entire system is allowed to...

A tractor-trailer rig with a 2000-kg tractor, a 4500-kg trailer, and a 3600-kg trailer is traveling on a level road at 90 km/h. The brakes on the rear trailer fail and the antiskid system of the...

Three cables pull on the pipe such that they create a resultant force having a magnitude of 900 lb. if two of the cables are subjected to know forces, as shown in the figure, determine the direction...

Isopropyl ether (E) is used to separate acetic acid (A) from water (W). The liquid-liquid equilibrium data at 25oC and 1 atm(a) One hundred kilograms of a 30 wt% A-W solution is contacted with 120 kg...

Iodine reacts with mesitylene to form a complex with an absorption maximum at 332 nm in CCl 4 solution: (a) Given that the product absorbs at 332 nm, but neither reactant has significant absorbance...

The engine of the lightweight plane is supported by struts that are connected to the space truss that makes up the structure of the plane. The anticipated loading in two of the struts is shown....

Based on the dimensionless conduction heat rates for cases 12-15 in Table 4.1 b, find shape factors for the following objects having temperature T1, located at the surface of a semi-infinite medium...

The cord exerts a force of F = {12i + 9j ? 8k) lb on the hook. If the cord is 8 ft long, determine the location x, y of the point at attachment B, and the height z of the hook. 8 ft

List the point coordinates of the titanium, barium, and oxygen ions for a unit cell of the perovskite crystal structure(figure). Ti4+ Ba2+ 02-

For the extraction of Cu 2+ by dithizone in CCl 4 , KL= 1.1 10 4 , K M = 7 10 4 , K a = 3 10 - 5 , = 5 10 22 , and n = 2. (a) Calculate the distribution coefficient for extraction of 0.1 M Cu 2+...

Determine the magnitudes of the components of force F = 400 N acting parallel and perpendicular to segment BC of the pipe assembly. F- 400 N 30 3m

A steel spur pinion has 15 teeth cut on the 20 full-depth system with a module of 5 mm and a face width of 60 mm. The pinion rotates at 200 rev/min and transmits 5 kW to the mating steel gear. What...

Coal is discharged from the tailgate of a dump truck with an initial velocity vA = 2 m/s A 50?. Determine the radius of curvature of the trajectory described by the coal (a) At point A, (b) At the...

Propylene is hydrogenated in a batch reactor: C 3 H 6 (g) + H 2 (g) C 3 H 8 (g) Equimolar amounts of propylene and hydrogen are fed into the reactor at 25C and a total absolute pressure of 32.0 atm....

Appelpolscher has just left a meeting with Stella J. Smarly, IGC?s vice-president for Process Operations and Development. Smarly is concerned about an upcoming extended plant test of a method...

An ideal Otto cycle has a compression ratio of 9.2 and uses air as the working fluid. At the beginning of the compression process, air is at 98 kPa and 27C. The pressure is doubled during the...

A uniform slender rod of length L = 36 in. and weight W = 10 lb hangs freely from a hinge at C. A horizontal force P of magnitude 15 lb is applied at end B. Knowing that r = 9 in., determine (a) The...

Consider an infinitely thin flat plate at an angle of attack a in a Mach 2.6 flow. Calculate the lift and wave-drag coefficients for (a) = 5 (b) = 15 (c) = 30

The positions of point A on the building and point B on the antenna have been measured relative to the electronic distance meter (EDM) at O. Determine the distance between A and B. Hint: Formulate a...

The 10-ft flagpole AC forms an angle of 30° with the z axis. It is held by a ball-and-socket joint at C and by two thin braces BD and BE. Knowing that the distance BC is 3 ft, determine the...

Consider a rod of diameter D, thermal conductivity k, and length 2L that is perfectly insulated over one portion of its length, - L

Three identical small spheres, each of weight 2 lb, can slide freely on a horizontal frictionless surface. Spheres B and C are connected by a light rod and are at rest in the position shown when...

A very long rod of 5-mm diameter and uniform thermal conductivity k = 25 W/m. K is subjected to a heat treatment process. The center, 30-mm-Iong portion of the rod within the induction heating coil...

For the frame and loading shown, determine the components of the forces acting on member CDE at C and D. 320 mm 100 N 30 B 160 mm 30 D. 160 mm 240 mm 80 mm

The flow just upstream of a normal shock wave is given by p 1 , = 1atm, T 1 = 288 K, and M 1 = 2.6. Calculate the following properties just downstream of the shock: p 2 , T 2 , P 2 , M 2 , p 0,2 , T...

A pistoncylinder device initially contains 1.2 kg of air at 700 kPa and 200°C. At this state, the piston is touching on a pair of stops. The mass of the piston is such that 600- kPa pressure is...

A technique for cooling a multichip module involves submerging the module in a saturated fluorocarbon liquid. Vapor generated due to boiling at the module surface is condensed on the outer surface of...

In a test on the vaporization of H20 into air in a wetted-wall column, the following data were obtained: Tube diameter, 1.46 cm, Wetted-tube length, 82.7 cm Air rate to tube at 24oC and 1 atm, 720...

An expander operates adiabatically with nitrogen entering at T\ and P\ w ith a molar flow rate n. The exhaust pressure is 15. and the expander efficiency is IJ. Estimate the power output of the...

Arm BCD is connected by pins to crank AB at B and to a collar at C. Neglecting the effect of friction, determine the couple M required to hold the system in equilibrium when θ = 0. -200mm---240...

It is desired to control the exit concentration of c3 of the liquid blending system shown in Figure. Using the information given below, do the following: (a) Draw a block diagram for the composition...

Saturated ethylene glycol at 1 atm is heated by a horizontal chromium-plated surface which has a diameter of 200 mm and is maintained at 480 K. Estimate the heating power requirement and the rate of...

An insulated glass tube and condenser are mounted on a reboiler containing benzene and toluene. The condenser returns liquid reflux so that it runs down the wall of the tube. At one point in the tube...

A constant-volume tank contains 5 kg of air at 100 kPa and 327C. The air is cooled to the surroundings temperature of 27C. Assume constant specific heats at 300 K. (a) Determine the entropy change of...

Worldwide, over a billion solder balls must be manufactured daily for assembling electronics packages. The uniform droplet spray method uses a piezoelectric device to vibrate a shaft in a pot of...

A 0.06-lb bullet is fired with a horizontal velocity into the lower end of a 45-lb slender bar which is initially at rest in a vertical plane. Knowing that the bullet becomes embedded in the bar and...

Comment on any advantages of the use of a star-delta transformer connection in practice.

The uniform bar AB is supported by a rope that passes over a frictionless pulley at C and a fixed peg at D. If the coefficient of static friction between the rope and the peg is D, determine the...

The steady-state temperature distribution in a composite plane wall of three different materials, each of constant thermal conductivity, is shown as follows. (a) Comment on the relative magnitudes of...

Two couples act on the cantilever beam. If F = 6 kN, determine the resultant couplemoment. 3 m- 3 m- 5 kN 0.5 m B 0.5 m 30 5 kN

While slowly walking, a man having a total mass M places all his weight on one foot. Assuming that the normal force NC of the ground acts on his foot at C, determine the resultant vertical...