A 2 litre 4-stroke indirect injection diesel engine is designed to run at 4500rev/min with a power output of 45kW. The following test data applies: Volumetric efficiency: Sfe: CV of fuel: Ambient conditions: 80% 0.071kg/MJ 42MJ/kg 1.03bar & 20°C Determine the bmep, the arbitrary ...
20 Aug 2020The vertical shaft rotates with constant angular velocity o, . The 35 angle between the edge of the 10 kg thin rectangular plate pinned to the shaft and the shaft remains constant. Determine o . 2 m 35° Figure 1
20 Aug 20202 Kg R= 19.6 N M = 19.6x O18=15-7~M 800 mm
20 Aug 2020Consider a theoretical single-stage vapour-compression refrigeration cycle using R-134a as the refrigerant is working in the steady state condition. It is operated with a condensing temperature of 40°C and an evaporating temperature of -12°C. The system produces 15kW of refriger...
20 Aug 2020Refer to a vapour-compression refrigeration cycle with refrigerant R-134a that is working under the steady flow condition. It is operated ideally under the high pressure side and low pressure side of 2.8 bar and 12 bar, respectively. (a) Sketch the T-s diagram of the refrigeratio...
20 Aug 2020We would like our second order system to have a step response with an overshoot, OS nd a settling time, t
20 Aug 2020Be careful-files from the Internet can contain viruses. Unless you need to edit, its safer to stay Q-1 We would like our second order system to have a step response with an overshoot, OS
20 Aug 2020A cast-iron specimen with a cross-sectional area of 0.5 mm2 is stretched by a force of 100 N. Given the Youngs Modulus and the breaking stress of cast iron are 250 kN/mm2 and 300 N/mm2 respectively. Determine: a. the stress on the specimen. (3 marks) ANSWER N/mm2 b. the force req...
20 Aug 2020Initially, at a temperature T, and a molar volume vi, a van der Waals gas undergoes a change of state to the final temperature T2 and the molar volume V2. The van der Waals gas is characterized by the two parameters a and b (cf. Eq. (3.3)). a. Show that the change in molar entrop...
20 Aug 2020Consider the slider crank system with link OB, AB, and piston A, each with mass center at its geometry center and has mı, m2, and mz, and mass moment of inertia 11, 12, and Iz. Define the inertial coordinate at point and change units into cm. (1) Denote the rigid bodies. Specify ...
20 Aug 2020Consider the slider crank system with link OB, AB, and piston A, each with mass center at its geometry center and has mı, m2, and mz, and mass moment of inertia 11, 12, and Iz. Define the inertial coordinate at point and change units into cm. (1) Denote the rigid bodies. Specify...
20 Aug 2020Find -7i|a3il -47 arg 2-i
20 Aug 2020Adobe Reader Window Help File Edit View Comment Tools Sign Problem 7 Problem 8 7- Amm AB has an angular velocity of w and an angular acceleration of a. If slipping occurs between the disk D and the fixed curved surface, determine t! angular velocity and angular acceleration of th...
20 Aug 2020Determine the tension developed in wires CA and CB required for equilibrium of the 10-kg cylinder. Take 0 = 400. (10 Marks) b) If cable CB is subjected to a tension that is twice that of cable CA, determine the angle for equilibrium of the 10-kg cylinder. Also, what are the tensi...
20 Aug 2020Consider Fergusons paradox train in figure below which has the following tooth numbers and initial conditions. Sun gear #2 N2= 100-tooth external gear. Sun gear #2 N3= 99-tooth external gear Sun gear # 2 N4= 101-tooth external gear Planet gear #2 N = 20-tooth external gear Input ...
20 Aug 2020Select a suitable type of journal bearing to carry a radial load of 100 KN at 6000 rev/min, assuming a shaft diameter of 100 mm. 2 A journal bearing of shaft diameter 25 mm is to carry a load of 9 kN at a speed of 30 rev/min. Decide on a suitable bearing type. 3 Select a thrust b...
20 Aug 2020A 6-meter long, weightless boom AB is supported by a hinge at A and a cable which runs from C through a small pulley D as shown in Figure 3. Two vertical loads act on the boom. The cable pulls the boom AB into a position at which it is inclined at 30° above the horizontal. The lo...
20 Aug 2020HO) = 0,1 (510°) (S - doEn f Find Bode Magnade and Bode Phabe detagram
20 Aug 2020A gas obeying the Van der Waals equation of state is initially at pressure p1 and specific volume v1. It undergoes an isentropic expansion to p2 = 0.1 MPa. (a) What is the equation giving the final specific volume, v2?
20 Aug 2020The beam shown in Figure 1 has clamped end supports and is subjected to a mid-span con- centrated load W and distributed load go = W 2L. Find the central deflection and the end constraining moments. qo=WI2L Figure 1: Beam of Question 1.
20 Aug 2020Given a four bar slider-crank linkage with the link 40mm, L3 = b = 40°, w2 = 25 rad/Sec, 15 rad/Sec?. Find the values of az and a4, A lengths L1= d 120mm, L4- c =80mm .For 02 and a2 100mm, L2= a = ABA, and AB for the open circuit of the linkage. Use the angles 03= 20.298°, 0,= 57...
20 Aug 2020A building shall be heated by a heat pump with heating capacity equal to 110 kW. The heat pump is using groundwater at 10 °C as heat source and R-134a as a refrigerant. The condensing and evaporating temperatures are respectively equal to 60°C and 0°C. The liquid R-134a at the co...
20 Aug 2020For the instant represented, crank OB has a clockwise angular velocity =0.8 rad/s and is passing the horizontal position. Point C is the mid-point and center of gravity of bar AB. (a) Determine the position of C1; the center of instantaneous zero velocity and the angular velocity...
20 Aug 2020Carbon dioxide (CO2) and oxygen (O2) in a 1:2 molar ratio enter a reactor operating at steady state in separate streams at 1 atm, 127°C and 1 atm, 277°C, respectively. An equilibrium mixture of CO2, CO, and O2 exits at 1 atm. If the mole fraction of CO in the exiting mixture is 0...
20 Aug 2020An ideal Diesel cycle has a maximum cycle temperature of 2000 deg C. The state of the air at the beginning of the compression is 95 kPa, and 15 deg C. This cycle is executed in a 4stroke, 8-cylinder engine with a bore of 10 cm and a piston stroke of 12 cm. The compression ratio i...
20 Aug 2020Draw Shear Force and Bending Moment Diagrams for the beam in Figure 2. Determine the maximum magnitude of Shear Force and Bending Moment and its location. 260 kNm 30 kN/m " А р в с. t-sm-t-smtomtom motion
20 Aug 2020Air at atmospheric pressure and temperature of 56.5 C flows with velocity of 0.915 m/sec along a flat plate which is kept at a uniform temperature of 121.1 C. Determine the local heat transfer coefficient h(x) at a distance of 0.61 meter from the leading edge of the plate and the...
20 Aug 2020Water is to be cooled from 18.33 C to 6.67 C by using a coolant at an inlet temperature of -1.11C with a temperature rise of 3.89 C. The coolant flows in the tube and water is flowing in the shell side of the heat exchanger respectively. Determine the total heat transfer area req...
20 Aug 2020January 02, 2020 ID: 4. (extra Credit 20 Points) A large aluminum plate with k 2076 wimcand density of 2735 km with red at la of thickness L = 0.0245 meter at uniform temperature of To 0.0205 meter at uniform temperature of To 93.3 cis suddenly in sec into a fluid with constant t...
20 Aug 2020GRAPHICAL VELOCITY ANALY For these six-bar mechanisms o, is given. Find the instant centers. Determine 0,, and the velocity of the slider block 6. In P.19, also find the velocity of P. P.19 P.20 (03
20 Aug 2020Calenkte R if the current flowing through it is 2A C (b) Calculate power dissipefeel by 7% 3 at
20 Aug 2020A block of 3 kg is connected between two springs of the same stiffness 500 N/m as shown in figure QA1.1 Consider the positive direction to the left. k= 500 N/m k= 500 N/m MWWWW 3 kg WWWWW Figure QA1.1 Mass connected between two springs 1. Write the equation of motion of the syst...
20 Aug 2020Calculate energy transmitted into a building at 3 P.M on July 21st due to solar radiation through a south facing window made of regular single glass. The dimensions of the window are height 2 m, width 1.5 m and the depth of inset 0.3 m. Find the energy transmitted if there is no ...
20 Aug 2020Free vibration system. Rigid rod with two springs. 1 Write the equation of motion of the small oscillations of the red about point o (assume the rod is rigid and neglect the weight of the rod) [5 Marks) il. Determine the natural frequency of the system [5 Marks] ii. Determine th...
20 Aug 2020Question 4 f(3) = 2 4 2² (2² 32 2) - Find 2tz a) oslal 6) 14/2/22 c) 12/72 d) 04/21/21
20 Aug 2020In the mechanism shown in Fig. QB5, the point vertically is a fixed pivot and point AS - MOA Figure QB5 (After Meriam & Kraige) (a) Using a small diagram, find the center of instantaneous zero velocity for the rigid bar AB [4 marks] (b) Find the velocity and acceleration of point...
20 Aug 2020Problem 1 n outsidelated to a Determine the normal stress in a ball, which has an outside diameter of 220 mm and a wall thickness of 3 mm, when the ball is inflated to a gage pressure of 110 kPa. 9
20 Aug 2020A spherical gas-storage tank with an inside diameter of 12 m is being constructed to store gas under an internal pressure of 1.75 MPa. The tank will be constructed from structural steel that has a yield strength of 250 MPa. If a factor of safety of 3.0 with respect to the yield ...
20 Aug 2020A spherical pressure vessel has an inside diameter of 4 m and a wall thickness of 15 mm. The vessel will be constructed from structural steel [E = 200 GPa; v=0.29] that has a yield strength of 250 MPa. If the internal pressure in the vessel is 1,200 kPa, determine (a) the normal...
20 Aug 2020A typical aluminum-alloy scuba diving tank is shown . The outside diameter of the tank is 200 mm and the wall thickness is 12 mm. If the air in the tank is pressurized to 20 MPa, determine: (a) the longitudinal and hoop stresses in the wall of the tank. (b) the maximum shear stre...
20 Aug 2020A cylindrical boiler with an outside diameter of 3.60 m and a wall thickness of 40 mm is made of a steel alloy that has a yield stress of 415 MPa. Determine: (a) The maximum normal stress produced by an internal pressure of 2 MPa. (b) The maximum allowable pressure if a factor of...
20 Aug 2020A tall open-topped standpipe has an inside diameter of 2,250 mm and a wall thickness of 8 mm. The standpipe contains water, which has a mass density of 1,000 kg/m³. (a) What height h of water will produce a circumferential stress of 16 MPa in the wall of the standpipe? (b) What i...
20 Aug 2020The pressure tank is fabricated from spirally wrapped metal plates that are welded at the seams in the orientation shown. The tank has an inside diameter of 600 mm and a wall thickness of 5 mm. Determine the largest allowable gage pressure if the allowable normal stress perpendic...
20 Aug 2020The pressure tank is fabricated from spirally wrapped metal plates that are welded at the seams in the orientation shown. The tank has an inside diameter of 1,500 mm and a wall thickness of 8 mm. For a gage pressure of 1.2 MPa, determine (a) the normal stress perpendicular to the...
20 Aug 2020MPa 18 MPa A closed cylindrical tank containing a pressurized fluid has an inside diameter of 250 mm and a wall thickness of 10 mm. The stresses in the wall of the tank acting on a rotated element have the values shown. Determine the fluid pressure. 6 MPa
20 Aug 2020A 15 mm by 25 mm rectangular aluminum bar is used as a 650 mm long compression member. The ends of the compression member are pinned. Determine the slenderness ratio and the Euler 25 mm buckling load for the compression 650 mm member. Assume that E= 70 GPa. 15 mm Cross section.
20 Aug 2020T- OC M Q-2) An electronic circuit contains a power resistor that dissipates 1.5 W. The designer wants to modify the circuitry in such a way that it will be necessary for the resistor to dissipate 2.5 W. The resistor is in the shape of a disk 1 cm in diameter & 0.6 mm thick. Its ...
20 Aug 2020Lacing bars Problem 2 A 40 ft long column is fabricated by connecting two standard steel C10 · 15.3 channels (see below for cross-sectional properties) with lacing bars as shown. The ends of the column are pinned. Determine the Euler buckling load for the column. Assume that E= 2...
20 Aug 2020Double angles L 102 x 76 X 9.5 Long legs back-to-back Problem 3 Two L102 · 76 · 9.5 structural steel angles (see below for cross-sectional properties) are used as a compression member that is 4.5 m long. The angles are separated at intervals by spacer blocks and connected by bolt...
20 Aug 2020Weak axis W8 X 24 Problem 4 A long, slender W8 · 24 structural steel shape (see below for cross-sectional properties) is used as a 35 ft long column. The column is supported in the vertical direction at base A and pinned at ends A and Cagainst translation in the y and z direction...
20 Aug 2020
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