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The 300-kg and 400-kg mine cars are rolling in opposite directions along the horizontal track with the respective speeds of 0.6 m/s and 0.3 m/s. Upon impact the cars become coupled together. Just... A jet-engine noise suppressor consists of a movable duct which is secured directly behind the jet exhaust by cable A and deflects the blast directly upward. During a ground test, the engine sucks in... A 2-oz bullet is fired horizontally with a velocity v = 1000 ft/sec into the slender bar of a 3-lb pendulum initially at rest. If the bullet embeds itself in the bar, compute the resulting angular... Reduce the system shown in Figure P5.4 to a single transfer function, T(s) = C(s)/R(s). G3 R(s) C(s) G1 G2 G4 FIGURE P5.4 Exercise 4.2 gives the probability distribution for the number Y of homes with high dust mite levels. a. Find E(Y). Give a meaningful interpretation of the result. b. Find s. c. Find the exact... Use MATLABs Simulink to obtain the step response of a system, under the following conditions: a. The system is linear and driven by an amplifier whose gain is 10. b. An amplifier whose gain is 10... Given the system below, draw a signal-flow graph and represent the system in state space in the following forms: a. Phase-variable form b. Cascade form 200 G(s) (s + 10)(s + 20)(s+ 30) For the system shown in Figure P5.15, find K and to yield a settling time of 0.12 second and a 20% overshoot. R(s) E(s) K C(s) s(s + a) FIGURE P5.15 Figure P5.53 shows the block diagram of a possible cascade control scheme for an HEV driven by a dc motor (Preitl, 2007). Let the speed controller G SC (s) = 100 + 40/s, the torque controller and... Given the HIV system of Problem 84 in Chapter 4 and repeated here for convenience (Craig, 2004): Express the system in the following forms: a. Phase-variable form b. Controller canonical form c.... Effective maintenance of equipment depends on the ability to accurately forecast the demand for spare parts. The Journal of Quality in Maintenance Engineering (Vol. 18, 2012) developed a statistical... The Scotch-yoke mechanism of Prob. 5/34 is modified as shown in the figure. For given values of , , r, , d, and , determine the velocity and acceleration of point P of the shaft. at P d- B Let X and Y be two continuous random variables with joint probability density a. Find the value of c. b. Find f 1 (x). c. Find f 2 (y). d. Find f 1 (x y). e. Find f 2 (x y). f. Find P (X 1 and Y ... The space shuttle, together with its central fuel tank and two booster rockets, has a total mass of 2.04(10 6 ) kg at liftoff. Each of the two booster rockets produces a thrust of 11.80(10 6 ) N, and... Motion of the wheel as it rolls up the fixed rack on its geared hub is controlled through the peripheral cable by the driving wheel D, which turns counterclockwise at the constant rate 0 = 4 rad/s... The Geneva wheel is a mechanism for producing intermittent rotation. Pin P in the integral unit of wheel A and locking plate B engages the radial slots in wheel C, thus turning wheel C one-fourth of... The shaft of the wheel unit rolls without slipping on the fixed horizontal surface, and point O has a velocity of 3 ft /sec to the right. By the method of this article, determine the velocities of... The 64.4-lb solid circular disk is initially at rest on the horizontal surface when a 3-lb force P, constant in magnitude and direction, is applied to the cord wrapped securely around its periphery.... The uniform bar of mass m is supported by the smooth pin at O and is connected to the cylinder of mass m 1 by the light cable which passes over the light pulley at C. If the system is released from... The circular disk of radius r rotates about a fixed axis through point O with the angular properties indicated in the figure. Determine the instantaneous velocity and acceleration of point A. Take... When a 3-kg collar is placed upon the pan which is attached to the spring of unknown constant, the additional static deflection of the pan is observed to be 42 mm. Determine the spring constant k in... The 4-oz slider oscillates in the fixed slot under the action of the three springs, each of stiffness k = 0.5 lb/in. If the initial conditions at time t = 0 are x0 = 0.1 in. and x0 = 0.5 in./sec,... The cable drum has a mass of 800 kg with radius of gyration of 480 mm about its center O and is mounted in bearings on the 1200-kg carriage. The carriage is initially moving to the left with a speed... The system shown is released from rest from an initial position x 0 . Determine the overshoot displacement x 1 . Assume translational motion in the x-direction. k = 108 N/m c 18 N.s/m m = 3 kg t X1 Briefly describe the design procedure for a controller. Determine the value of the viscous damping coefficient c for which the system is critically damped. The cylinder mass is m = 2 kg and the spring constant is k = 150 N/m. Neglect the mass and friction... Find analytical expressions for the magnitude and phase response for each G(s) below. a. b. c. 1 G(s) = s(s +2)(s+ 4) The end rollers of the bent bar ADB are confined to the slots shown. If v B = 0.3 m/s, determine the velocity of roller A and the angular velocity of the bar. 90 mm 30 B D 90 mm UB B = 15 Consider the unity feedback system shown in Figure P9.1 with a. Design a compensator that will yield K p = 20 without appreciably changing the dominant pole location that yields a 10% overshoot for... Design a PI controller to drive the step response error to zero for the unity feedback system shown in Figure P9.1, where The system operates with a damping ratio of 0.6. Compare the specifications... Calculate the density and specific weight of carbon dioxide at a pressure of 114 kN/m 2 absolute and 90C. Determine the density of methane gas at a pressure of 200 kN/m 2 absolute and 80C. Th e bulk modulus of elasticity of ethyl alcohol is 1.06 10 9 Pa. For water, it is 2.15 10 9 Pa. Which of these liquids is easier to compress? a. Ethyl alcohol b. Water A 1ft diameter cylindrical tank is filled with water to a depth of 2ft. A cylinder of wood 5 in. in diameter and 6.0 in. long is set afloat on the water. The weight of the wood cylinder is 3.5 lbf.... The plane rectangular gate can pivot about the support at B. For the conditions given, is it stable or unstable? Neglect the weight of the gate. Justify your answer with calculations. Water 8 m Gate... A tank is fitted with a manometer on the side, as shown. The liquid in the bottom of the tank and in the manometer has a specific gravity (SG) of 3.0. Th e depth of this bottom liquid is 20 cm. A 15... As shown, an air space above a long tube is pressurized to 50 kPa vacuum. Water (20C) from a reservoir fills the tube to a height h. If the pressure in the air space is changed to 25 kPa vacuum, will... Water at 15C flows through a nozzle that contracts from a diameter of 15 cm to 2 cm. Th e exit speed is v 2 = 10 m/s, and atmospheric pressure prevails at the exit of the jet. Calculate the pressure... The hypothetical liquid in the tube shown in the figure has zero viscosity and a specific weight of 10 kN/m 3 . If p B p A is equal to 8 kPa, one can conclude that the liquid in the tube is being... This closed tank, which is 4 ft in diameter, is filled with water ( = 62.4 lbm/ft 3 ) and is spun around its vertical axis at a rate of 10 rad/s. An open piezometer is connected to the tank as shown... The sector and attached wheels are released from rest in the position shown in the vertical plane. Each wheel is a solid circular disk weighing 12 lb and rolls on the fixed circular path without... The instrument shown has a mass of 43 kg and is spring-mounted to the horizontal base. If the amplitude of vertical vibration of the base is 0.10 mm, calculate the range of frequencies n of the base... Refer to the Journal for Engineering for Industry (May 1993) study of deep hole drilling under drill chip congestion, Exercise 8.32. Test to determine whether the true standard deviation of drill... Refer to the Journal of Marketing Research (Dec., 2011) study of shopping cart design, Exercise 8.41. Recall that design engineers want to know whether the mean choice of vice-over virtue score is... Suppose you are designing an object to fall through seawater with a terminal velocity of exactly 1 m/s. What variables will have the most influence on the terminal velocity? List these variables and... A company produces a fast drying rubber cement in 32-ounce aluminum cans. A quality control inspector is interested in testing whether the variance of the amount of rubber cement dispensed into the... What are the restrictions on the feedforward transfer function G2(s) in the system of Figure P7.6 to obtain zero steady-state error for step inputs if: a. G 1 (s) is a Type 0 transfer function; b. G... For the unity feedback system of Figure P7.1, where a. Find the system type. b. What error can be expected for an input of 12u(t)? c. What error can be expected for an input of 12tu(t)? K (s? + 6s +... A design team is developing a prototype CO 2 cartridge for a manufacturer of rubber raft s. The is cartridge will allow a user to quickly inflate a raft . A typical raft is shown in the sketch.... A liquid flows between parallel boundaries as shown above. The velocity distribution near the lower wall is given in the following table: a. If the viscosity of the liquid is 10 3 Ns/m 2 , what is... How much power is required to move a spherical-shaped submarine of diameter 1.5 m through seawater at a speed of 10 knots? Assume the submarine is fully submerged. A field test is used to measure the density of crude oil recovered during a fracking* operation. The crude oil recovered is mixed with brine. The oil and brine mixture are placed in an *Hydraulic... For this siphon the elevations at A, B, C, and D are 30 m, 32 m, 27 m, and 26 m, respectively. The head loss between the inlet and point B is three-quarters of the velocity head, and the head loss in... Water ( = 62.4 lbm/ft 3 ) flows from the large orifice at the bottom of the tank as shown. Assume that the flow is irrotational. Point B is at zero elevation, and point A is at 1 ft elevation. If V A... Water flows in the pipe shown, and the manometer deflects 120 cm. What is f for the pipe if V = 3 m/s? D = 5 cm Elevation = 10 m 4 m Elevation = 11 m V = 3 m/s S= 2.5 Air flows in a 3-cm smooth tube at a rate of 0.015 m 3 /s. If T = 20C and p = 110 kPa absolute, what is the pressure drop per meter of length of tube? For this system, point B is 10 m above the bottom of the upper reservoir. The head loss from A to B is 1.1V 2 /2g, and the pipe area is 8 10 4 m 2 . Assume a constant discharge of 8 10 4 m 3 /s.... In this system, d = 15 cm, D = 35 cm, and the head loss from the venturi meter to the end of the pipe is given by h L = 1.5 V 2 /2g, where V is the velocity in the pipe. Neglecting all other head... Refer to Figure 7.14. Assume that the head loss in the pipes is given by h L = 0.02(L/D)(V 2 /2g), where V is the mean velocity in the pipe, D is the pipe diameter, and L is the pipe length. The... Water flows from reservoir A to reservoir B in a desert retirement community. The water temperature in the system is 100F, the pipe diameter D is 2 ft, and the pipe length L is 160 ft. If H = 35 ft,... Estimate the rate of flow of water through the venturi meter shown. Air (y = 0.20 lbf/ft') 48 in 30 Diameter = 4 in Diameter = 12 in Water flows over a rectangular weir that is 3 m wide and 35 cm high. If the head on the weir is 15 cm, what is the discharge in cubic meters per second? Water at 50F is piped from a reservoir to a channel like that shown. The pipe from the reservoir to the channel is a 4 in. steel pipe 100 ft in total length. There are two 90 bends, r/D = 1, in the... The state of 1(lb m ) of steam is changed from saturated vapor at 20 (psia) to superheated vapor at 50 (psia) and 1000(F). What are the enthalpy and entropy changes of the steam? What would the... Assuming the validity of Eq. (6.89), derive Edmisters formula for estimation of the acentric factor: where T n / T c , T n is the normal boiling point, and P c is in (atm). 3 log P. - 1 1-0 Consider a chloroform(1)/tetrahydrofuran(2) mixture with x 1 = 0.90, initially at 76C and 120 kPa. Describe the evolution of phases and phase compositions as the temperature is gradually reduced to... Sketch a figure similar to Fig. 3.4a for the forward-biased junction of an npn transistor. Describe the resulting carrier motion. Fig. 3.4a + Majority carriers E + B Depletion region VEE (a) Sketch a figure similar to Fig. 3.4b for the reverse-biased junction of an npn transistor. Describe the resulting carrier motion. Fig. 3.4 Minority carriers B+ Depletion region Vcc (b) Consider a chloroform(1)/tetrahydrofuran(2) mixture with x 1 = 0.10, initially at 80C and 120 kPa. Describe the evolution of phases and phase compositions as the temperature is gradually reduced to... Consider a chloroform(1)/tetrahydrofuran(2) mixture with x 1 = 0.20, initially at 70C and 120 kPa. Describe the evolution of phases and phase compositions as the temperature is gradually increased to... Sketch a figure similar to Fig. 3.5 for the majority- and minority-carrier flow of an NPN transistor. Describe the resulting carrier motion. Fig. 3.5 Majority carriers P + Minority carriers E B.... Calculate the frequency of a Wien bridge oscillator circuit (as in Fig. 14.23) when R = 10 k and C = 2400 pF. Fig. 14.23 R3 +Vcc Output sinusoidal Op-amp signal R2 R4 -VEE f,= 2n VR, C, R2C2 FIG.... A single Px 1 data point is available for a binary system at 35C. Estimate from the data: (a) The corresponding value of y 1 . (b) The total pressure at 35C for an equimolar liquid mixture. (c)... a. Using the characteristics of Fig. 3.7 and 3.8, determine I C if V CB = 5 V and V B E = 0.7 V. b. Determine V BE if I C = 5 mA and V C B = 15 V. c. Repeat part (b) using the characteristics of Fig.... Repeat the analysis of problem 15 for the network of Fig. 9.81 with the addition of a source resistance and signal source as shown in Fig. 9.85 . Plot the gain A vs = V o V s and comment on the... For the 2N5457 JFET of Fig. 6.20, what is the power rating at a typical operating temperature of 45C using the 5.0 mW/C derating factor? Fig. 6.20 2NS457 MMBF5457 ABKLITE MANIMIM RATINCS Sel Dr Ss... Determine V o1 and V o2 for the networks of Fig. 2.159 . +12 Vo Si (a) 4.7 GaAs Vo -10 Vo FIG. 2.159 Problem 9. Ge Si K (b) 1.2 kQ ww + Vo 3.3 A proposed embankment fill requires 8000 m 3 of compacted soil. The void ratio of the compacted fill is specified as 0.7. Four borrow pits are available as described in the following table, which... Consider the Supermarine Spitfire shown in Figure 5.19. The first version of the Spitfire was the Mk I, which first flew in 1936. Its maximum velocity is 362 mi/h at an altitude of 18,500 ft. Its... A motor control system for a computer disk drive must reduce the effect of disturbances and parameter variations, as well as reduce the steady-state error. We want to have no steady-state error for... Consider a unity feedback system with loop transfer function Determine the value of the gain K such that the percent overshoot to a unit step is minimized. L(s) = Ge(s)G(s) = K(s + 2) (s + 5) (s + s... Determine the angle between the two cables. 2 m 3 m F = 40 N |A Z F = 70 N 3 m 4m -3 m- 2m B Determine the magnitude of the projected component of force F along the pole. F = (-20i + 50j - 10k} lb A 6 ft 1-281- X 3 ft Prob. 2-105 Determine the magnitude and coordinate direction angles , . of the resultant force acting on the pole. Set x = 4m, y = 2m. -3 m F=250 N = 300 N 4 m F = 350 N m The spur gear is subjected to the two forces. Express each force as a Cartesian vector. F= 180 lb 60 60 24. 7 135 25 F = 50 lb Two forces F 1 and F 2 act on the screw eye. If the resultant force F R has a magnitude of 150 lb and the coordinate direction angles are shown. determine the angle y, the magnitude of F 2, and its... If cable AD is tightened by a turnbuckle and develops a tension of 1300 lb, determine the tension developed in cables AB and AC, and the force developed along the z-axis of the Antema tower AE. 30 ft... Determine the length of the connecting rod AB by first formulating a position vector from A to B and then determining its magnitude. 30 B 300 mm 150 mm Prob. 2-86 X Given that G = 3a + cosa z 2 a z , find the component of G along a x at point Q(3,4,6). Three 10-lb balls and one 15-lb ball are suspended from the pulley-and-cable system. If the pulleys are frictionless and the centers of all of them lie in the same horizontal plane, determine the sag... Determine the force in each of the three cables needed to support the tractor tread assembly, which has a mass of 8 Mg. 1.25 m B X 1.25 m N 3 m D 2 m 1m If the tension developed in either cable AB or AC cannot exceed 1000 lb, determine the maximum tension that can be developed in cable AD when it is tightened by the turnbuckle. Also, what is the... Determine the force in each of the three cables needed to lift the machine that has a weight of 10 kN. x 1 m 3 m 2 m 10 KN A B C 1.25 m 1.25 m If the cords suspend the two buckets in the equilibrium position, determine the weight of bucket B. Bucket A has a weight of 60 lb. E 40 A 20 20 B D 65 The lamp has a weight of 15 lb and is supported by the six cords connected together as shown. Determine the tension in each cord and the angle for equilibrium. Cord BC is horizontal. E 30 B A C 45 E... Each cord can sustain a maximum tension of 20 lb. Determine the largest weight of the lamp that can be supported. Also, determine of cord DC for equilibrium. E 30 B 60 A C 750 D The spring has a stiffness of k = 800 N/m and an unstretched length of 200 mm. Determine the force in cables BC and BD when the spring is held in the position shown. k = 800 N/m B www 500 mm -400 mm... Determine the stretch in each spring for equilibrium of the 2-kg block. The springs are shown in the equilibrium position. 3 m Ans. -3 m- wwwwww KAC = 20 N/m D -4m- wwwwwww KAD = 40 N/m B KAB = 30 N/m Given that find: (a) |P + Q R|, (b) P Q X R, (c) Q X P R, (d) (P X Q) (Q X R), (e) (P X Q) X (Q X R), (f) cos PR , (g) sin PQ . P = 2a, ay-2a Q = 4a, + 3a, + 2a R = -a + a, + 2a Determine the reactions at the roller support A, the joint D, and the tension in cable BC for ball-and-socket the plate. 0.4 m X 0.6 m 0.6 m 0.6 m B 450 N
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