Mechanical Engineering questions and answers in October 2022

SECTION 10.7 Initial Conditions 29. The capacitor in Fig. 10.101 is initially charged to 6 V with the polarity shown. a. Write the expression for the voltage vo after the switch is closed. b. Write th...
a) The distance is _____ mm b) find the corresponding angular acceleration of the rod. A uniform slender rod of length L = 980 mm and mass m = 4.4 kg is suspended from a hinge at C. A horizontal force...
 . Consider two elastically constrained carts that are free to oscillate in the vertical plane over a smooth horizontal surface. As illustrated, the cart of mass m1 is attached to a wall via a spring...
For this discussion activity, research the web and discuss the impact of scheduled maintenance programs on the life cycle of the aircraft and address the following in your initial post: Discuss what ...
Consider the given structure with P = 56 kN and Q = 43 kN. Using the method of joints, determine the force in each member of the truss shown. State whether each member is in tension ( T ) or compressi...
Solve the following question .  . It is desired to use PI control, with the transfer function KI+IX_:ZK1.G:K2 for the thermal system having the transfer function 1 (3(3) 2 (s+1](s+3](s+4] Thus the fo...
4. (4) Air enters an insulated nozzle operating at steady state with a velocity of 50 m/s and temperature of 300K, and exits with temperature of 280K; constant specific heat may be applied. What is th...
1. (22) Water is used as the working fluid in the turbine arrangement shown. The Reheater is an indirect contact heat exchanger between the turbines; it improves the efficiency when this arrangement i...
2. (18) Three return lines in a chemical processing plant enter a collection tank operating at steady state at 1 bar; water flows through all of the lines, but the phase differs at each numbered state...
hello please solve with full explantion and steps as soon as possible will like. thank you.. O 4. Consider the matrices A = ] 2 0 Calculate the eigenvalues, the eigenvectors, and the inverse of these ...
 . Question 1. {5 points) You have been hired by an engineering firm that specializes in the design and manufacture of commercial 3D printers. The firm is currently in financial difficulty and is l...
 . 4. For a state of biaxial strain (gbmx) in a linear—elastic isotropic material, What are the corresponding stresses? How would this change if the Poisson's ratio was zero? Briefly explain Why...
no further information. 1.1 What are the first two questions that must be addressed in an RCM analysis? 1.2 What happens to production when there is a breakdown due to failure? 1.3 List the possible p...
Evaluate how aircraft systems work together to keep and aircraft flying. Identify a real world current event regarding an aircraft system. Explain about the chosen current event, why this event and gi...
please solve the following question  . A signal g(t) = sinc 2(5xt) is sampled (using uniformly spaced impulses) at a rate of: (i) 5 Hz; (ii) 10 Hz; (iii) 20 Hz. For each of the three case: (a) Sketch...
7,8  . Water is the working fluid in a regenerative Rankine cycle with one open feedwater heater. Steam enters the turbine at 1400 lb,/in2 and 1000 F and expands to 120 lb;/in.", where some of t...
5,6,  . An ideal Rankine cycle with reheat uses water as the working fluid. As shown in the figure below, the conditions at the inlet to the first turbine stage are 1600 lbf/in., 1200 F and the steam...
Asap. Problem 5 Acceleration of a particle The object of thus exercise is to determine the expression of the magnitude of the acceleration of a particle using two methods. The apparatus used is formed...
7,8   . Water is the working fluid in a regenerative Rankine cycle with one open feedwater heater. Steam enters the turbine at 1400 lb,/in2 and 1000 F and expands to 120 lb;/in.", where some of...
 . You have been given a sheet of a metal that has a plane strain fracture toughness of 25 MPa-m /2. An 8 mm long crack has been on one side of the sheet. An applied tensile stress of 1 1 1 MPa cause...
 . 2.6 An engineering analysis problem is formulated in terms of the following second- order boundary value problem: 2xu" + 3u' = 4; 1 <x<2 u'(]) = 1 and u(2) - 2 = 0 (a) Derive a suitable...
 . 1. (60 points) A massive linear elastic rod like structure (in the vertical plane, i.e., under the effect of gravity) is shown below. K s=2000 KN/m 3 m F = 50 KN - 1 m 0.5 m A concentrated force o...
Determine the composition of the Liquid (wt% Sn) for a 40 wt% Sn, 60 wt% Pb alloy at 250°C.  . 350 300 250 200 Temperature, C 150 100 50 0 O 10 20 30 40 50 Pb 60 70 80 90 100 a = alpha, B = beta Wt%...
The solubility of silver (Ag) in αat 206 is  ________________ (answer with no decimal places - example answers 0,1,2,3,4,5,6.........). 1200 A -Liquidus 1000 Liquid -Solidus B +L 800 779.C (TE) 8.0...
a) What is the heat transfer rate per unit area in kW/m2 if T1 = 50˚C, T2 = 400˚C, t = 20 cm and kwall = 165 W/m·K? Indicate "+" or "-" for the direction.  b) What is the total thermal resistance ...
 . 5. [20] From a hydroelectric power plant 6000 MW are to be transmitted to a load center located 500 km from the plant. Find the surge impedance load (SIL), and based on practical line loadability ...
 . 3. [20] Three zones of a single-phase circuit are identified in the figure below. The zones are connected by transformers Ti and T2, whose ratings are also shown in the figure. Neglect the transfo...
 . The linearized dynamic model of a certain process is given by 1 = 12 - 2:1 12 = -01 - 12 - 13 i3 = 212 y= 1+2 (a) Determine the matrices A, B, C, and D of the state space representation of the sys...
 . 4. A p-n junction is formed in a boron-doped silicon wafer by diffusing arsenic from the surface. The junction is formed at the depth where the arsenic concentration equals the boron concentration...
Discuss following scenarios, identifying where gravity and friction play a part and identifying which of Newton's laws is seen in action.  a) A marble rolling across a smooth flat surface b) A ball t...
A firework is launched with vertical velocity 32.0ms-1 and horizontal velocity 9.0ms-1. a) Calculate the resultant velocity and the angle at which it is launched b) Calculate the new vertical velocity...
A horizontal beam 4.8m long of mass 18kg is supported by pillars 0.2m from each end. There is man of mass 85kg standing 1.7m from one end of the beam. Overleaf draw a diagram showing the forces acting...
 . 4.9 Consider the intersection of two shocks of opposite families, as sketched in Fig. 4.23. For MI = 3, p1 = 1 atm, 02 = 20, and 03 = 150, calculate the pressure in regions 4 and 4', and the flow ...
 . Sample Problems Set 3 1. An experiment on an aeroelastic model of an aircraft wing was performed in a subsonic wind tunnel and the following angles of twist at the wing tip measured. at q=0.4 (kN/...
 . Consider a beam as shown. According to the elementary theory of bending, the stress 03;X is given by on = -12 My / bh3 where M is the bending moment which is a function of x. Assume this value of ...
Refrigerant R12 (Dichlorodiflouromethane - CF,Cl,) is used in an ideal vapour compression refrigeration cycle. At state 1, the refrigerant is a saturated vapour at a pressure of 1.509bar. The maximum ...
Dimensions for I. $.500-.502 V0.88 x 82 NOTES: ALL FILS R.12, RNDS R.06 ALL FIN. SURF 63M IN. PART SYM ABOUT & 624 K 2.50 1 312 R.03 MAX - VIEW A 50 1.000 (F SCALE 21 4X $,203 SF) $,406 2X $,219 W...
Value D. $.500-.502 Vo.88 x 82 NOTES: ALL FILS R.12, RNDS R.06 ALL FIN. SURF 63u IN. PART SYM ABOUT 4 NT 624 312 2.50 R.03 MAX- VIEW A .50 1.000 (F SCALE 21 4X $,203 SF) $,406 2X $219 4.250 L 0,3751.2...
Determine the tension in cables AB, BC, and CD, necessary to support the 10-kg and 15-kg traffic lights at B and C, respectively. Also, find the angle 0. Cable BC is horizontal A D 15% B C 10 The tens...
If the mass of cylinder C is 40 kg, determine the mass of cylinder A in order to hold the assembly in the position shown and the tension in horizontal cable DE. The pulley at B is frictionless B 1 30 ...
A former Statics student wishes to weigh himself but only has access to a scale A with a capacity limited to 95lbsand a small 25lb spring dynamometer B. With the rig shown he discovers that when he ex...
Kindly solve the below questions on manufacturing process perspective. A round billet made of chromium is extruded at a temperature of 2350 .C. The billet diameter is 250 mm and diameters of the extru...
please help i need complete solution with cancelation of units thanks  . A. A fluid at 100 psia, with a specific volume of 4ft1/th and a velocity of 600 ft/s, enters a device. Heat loss from the devi...
Also determine the angular acceleration of bar AB .. The angular velocity of rod DE is a constant 18 radfs clockwise. K. Determine the angular acceleration of bar 80. {You must provide an answer befor...
Show full solution. 2. Use the virtual work method to determine the horizontal and vertical components of the deflection at joint B of the truss shown 5 ft B A Answer key : Delta B = 25 k 0.225 in. &l...
Show full solution; step by step if possible. In the mechanism shown, bars EF and FG are made of steel while GH is made of aluminum. The compound bar is attached to a rigid support at H and to a galva...