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A 20-tooth pinion with a diametral pitch of 8 rotates 2000 rpm and drives a gear at 1000 rpm. What are the number of teeth in the gear, the theoretical center distance, and the circular pitch?
for the ideal air standard diesel cycle with a volumetric compression ratio of 17 1 calculate the efficiencies for
Estimate what the apparent power applied to the transformer would be in both cases if its primary resistance was R = 1.8 Ω.
A cooling coil consists of a bank of aluminum (k = 237 W/m · K) finned tubes having the core configuration of figure and an inner diameter of 13.8 mm.
1. Water vapour at 90kPa and 150°C enters a subsonic diffuser with a velocity of 150m/s and leaves the diffuser at 190kPa with a velocity of 55m/s and during the process 1.5 kJ/kg of heat is lost to surroundings. Determine (i) The final temperature (..
A mineshaft is drilled from the surface of a planet of mass M and radius R all the way to the center. If a rock is dropped into the shaft, at what speed v would it hit the bottom of the shaft?
A mass of 2.2 kg of helium at 381 kPa and -253oC is contained is a gas-tight frictionless piston-cylinder. The gas is expanded to a final pressure of 74 kPa in a poly tropic process where n = 1.667. Compute the work done (output positive) in the proc..
The 10 kg wedge B shown in Figure 7.19 is held at rest on an incline of 30? by stop C when it is struck by the 50 g bullet A, which is traveling horizontally with speed vA = 900 m/s. Assume that the bullet is stopped instantaneously by the block.
It is desired to limit the centerline deflection of the spandrel beam (Fig. 4.41) to (1/288)L, where L is the length. Expressed in terms of the usual beam parameters (E,I,L,P), how small must the load P be so as not to violate the constraint? .
As shown, a 130 lb bungee jumper wants to jump from the top of a 655 ft high bridge and be able to just touch the water below. Given that the bungee cord has a spring constant of 2.33 lb/ft, what should the bungee cord's relaxed length, l, be for ..
In our stress calculation example, we had an array of rod diameters and wanted to calculate the normal stress in each rod when it is loaded by an axial load P of 1000 lbs. EDU stresscalc ?
a 3-ft3 rigid tank initially contains r-134a at 120 psia and 100 percent quality. the tank is connected by a valve to a
Explain the physical significance of dexterity and give an example of a device for which the specification of dexterity would be very important.
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