Problem 3.1 3. The conditions at the beginning of compression in a dual combustion engine operating on air standard withk-1.4 are 1 bar, 0.04 m² and 90 °F. The compression, cut-off, and pressure ratio are 10, 4 and 1.5 respectively.Determine:a. The heat added in kJ/kg.b. The heat rejected in kJ/kg.c. The thermal efficiency of the cycle.d. The mean effective pressure of the cycle.e. The work output in hp if air is supplied at a rate of 5 kg/s

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Answered: 3. The conditions at the beginning of…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Hi, I have been given this pin-jointed frame analysis to solve (see pictures of the structure attached). Can you help me? The Figure 2 attached is a simplified structure to undertake a structural analysis on a concept design for a low cost stroller/buggy for children. The buggy consists of a number of metal sections that are pin-jointed together. The buggy is designed to accommodate a child of mass no more than 20 kg, sat on the seat which is supported at four points (Fc) on the frame of the buggy. Assume that the weight of the child is equally distributed across all of the points indicated on Figure 2 as Fc. Assume that there are no additional forces applied to the handle of the buggy, that the buggy is static (stationary) and that the buggy, and the elements of the frame have no mass. At points A and G, there are roll supports. At Points B, F and D there are the pin supports. I am required to determine the following: 1) Draw a free-body diagram of the structure 2) Simplify the Free…
The basic elements of a hydraulic press are shown in the figure below. The plunger has an area of 1 in.², and a force, F₁, can be applied to the plunger through a lever mechanism having a mechanical advantage of 8 to 1. If the large piston has an area of 190 in.², what load, F2, can be raised by a force of 30 lb applied to the lever? Neglect the hydrostatic pressure variation. F₂ F₂= lb Hydraulic fluid Plunger F₁
4.3. Assessing Risk of Aneurysm Rupture: Studies suggest that the maximum allowable stress (failure strength) for the wall tissue in an aortic aneurysm is o = 220 kPa, after accounting for factor of safety. A physician wants your expert opinion on the maximum diameter that an aortic aneurysm in a hypertensive patient (BP 200/90 mmHg) could be allowed to grow to before rupture becomes imminent. The wall thickness may be assumed to remain unchanged at t = 1.2 mm. State your answer in millimeters of diameter. INDBER
A alank of wood is fixed to a wall using a hinge. When the angle between the plank and the wall is 45°, a spring is attached to the wood 25cm from the hinge and fixed to the wall so that it is horizontal (Diagram A). The wood is then pushed downwards until it is perpendicular to the wall (Diagram B). The force exerted by the spring, depends on its length. As the spring stretches, the force it exerts increases. A graph showing this relationship is below. 70 Diagram B 60 Diagram A spring 50 90° 20 25cm 45 90° 10 25cm hinge 10 35 15 20 25 30 Spring Length (cm) (a) Calculate the length of the spring in Diagrams A and B. (b) Calculate the torque produced by the spring on the plank of compare the values. around the hinge in 4 oth Diagrams A and B and Force (N)
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4) A steel beam and a cable both of negligible mass are used to support a 1600 kg block. The beam is 3.50 m long and 3.00 cm in diameter. The cable is 1.0 cm in diameter. (a) Calculate the tension in the cable. (b) Determine the horizontal and vertical components of the force of the wall on the beam. (C) How much compression force is acting on the beam? (d) How much will the length of the beam be compressed? (e) How much is the cable stretched due to tension? elastic modulus for steel 200 x 10° N/m² 450

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