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1. Design a simple, spur gear train for a ratio of -7:1 and diametral pitch of 8. Specify pitch diameters and numbers of teeth. Calculate the contact ratio.
2. Design a simple, spur gear train for a ratio of +6.5:1 and diametral pitch of 5. Specify pitch diameters and numbers of teeth. Calculate the contact ratio.
A fluid sample is contained between two parallel plates separated by a distance of 2 mm. The area of the plates is 100 cm 2 .
A landfill operation uses a tractor to compact the waste. The tractor weighs 8 tons and has two tracks, each 2 ft 10 ft. Estimate the maximum compaction attainable in the landfill.
A freely (zero friction) rotating cylinder (mounted on a vertical axis) is placed on a model boat instead of a sail. The Magnus force that is created is used to power the boat. A fan is mounted on the boat to provide airflow over the cylinder.
Air at 600 kPa, 330 K enters a well-insulated, horizontal pipe having a diameter of 1.2 cm and exits at 120 kPa, 300 K. Applying the ideal gas model for air, determine at steady state (a) the inlet and exit velocities, each in m/s, (b) the mass fl..
how much energy kj is needed to accelerate an 1800 kg vehicle from 10 kmh to 30 kmh? assume that the acceleration takes
A journal bearing 120 mm in diameter and 60 mm long has a diametral clearance of 0.20 mm. The journal rotates 3000 rpm and is lubricated with SAE 20 oil at an average temperature of 70°C. Using Petroff's equation, estimate the power loss and the f..
The moment of inertia I2 for strut-2 is twice the moment of inertia I1 for strut-1. If P1 and P2 are the critical buckling loads for strut-1 and strut-2, respectively, how are P1 and P2 related?
Environmental engineers are involved in water and air pollution control, recycling, waste disposal, and public health issues. In which scenario could an environmental engineer be contracted by the owner to perform a particular service?
consider oxygen at 100 bar and specific volume of 0.08.a calculate the temperature t using the van der waals equation
calculate the static thrusts of the rocket and turbojet engine described in the figure. the thrust t is the force
hot water from a thermal spring is proposed as the heat source for a power cycle. if water is available at 95 c and a
A uniform, thin, rigid bar AB having mass M and length b is attached to a uniform flexible beam BC. Assume a small transverse displacement v(x, t). Using appropriate diagrams (free-body and kinematics), determine the boundary conditions for the be..
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