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Question 1:Calculate the design HP of a three-strand chain driven by an electric motor under smooth load conditions. Assume moderate temperature and dirty operating conditions with 18 hours of daily operation and a single-strand HP rating of 20.
Question 2:A single-strand roller chain drive connects a 10-hp engine to a lawn waste chipper/shredder, as shown below. As the engine operates at 1200 rpm, the shredding teeth should rotate at 240 rpm. The drive sprocket has 18 teeth. Determine an appropriate pitch for the chain, the number of teeth on the driven sprocket, the pitch diameters of both sprockets, and the chain speed. Also indicate the number of links in a suitable chain and specify the required centre distance
Question 3:The mass of a flywheel of an engine is 6.5 tons and the radius of gyration is 1.8 meters. It is found from the turning moment diagram that the fluctuation of energy is 56 kN-m. If the mean speed of the engine is 120 rpm, find the maximum and minimum speeds.
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Solution to three design problems contained in the report. The first is about the design power of three strand chain, the second is about the design of chain drive and the third is for calculating the fly wheel velocities maximum and minimum due to energy fluctuations.
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If you have a plane wall separating hot and cold fluids at temperature T(infinity)1 & T(infinity)2. Using x=0 & x=L as boundary conditions, determine what the heat flux would be in terms of T(infinity)1, T(infinity)2, h1, h2, k, L.
Make a sketch showing the orientation of a principal element (with respect to the original element drawn at A), and show all stresses acting on it.
If the wing average chord is 4 m and transition from laminar to turbulent flow is expected at Re = 106, calculate the percentage of chord with laminar flow.
A 24-tooth gear has AGMA standard full-depth involutes teeth with diametral pitch of 5. Calculate the pitch diameter, circular pitch, addendum, dedendum, tooth thickness and clearance. All dimensions must be taken to 4 decimal places to account for m..
Polymer fracture is highly dependent on the testing conditions, such as temperature and strain rate, but is not affected by the nature of bonding of the molecular chains. For metals, fracture only occurs along the boundaries created by the differentl..
Write the difference equation for the BTBC-CS method where a backward difference is used for the convection term and a central difference is used for the diffusion term. Assess the stability of the method.
Define the term black box, and explain why it is an important concept in object-oriented analysis. Can you think of other black boxes that you use in everyday life?
determine the force between the jaws of the clamp in terms of a torque exerted on the handle of the adjusting screw.
The following information is known about the steady flow of methane through a horizontal insulated duct: Determine the outlet velocity. What is the stagnation temperature at the outlet?
An object is dropped from the top of a building and is in view for time τ while passing a window of height h some distance lower down. How high is the top of the building above the top of the window?
A construction crew lifts approximately 560 lb of material several times during a day from a flatbed truck to a 32 ft rooftop. A block and tackle system with 50 lb of effort force is designed to lift the materials.
A piston/cylinder with cross sectional area of 0.01 m2 has a piston mass of 100 kg resting on the stops. With an outside atmospheric pressure of 100 kPa, what should the water pressure be to lift the piston?
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