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An incremental optical encoder that has N windows per track is connected to a shaft through a gear system with gear ratio p. Derive formulas for calculating the angular velocity of the shaft by the
(a) Pulse-counting method
(b) Pulse-timing method
What is the speed resolution in each case? What effect does step-up gearing have on the speed resolution?
1. Determine the volume change, in ft3, when 1 lb of water, initially saturated liquid, is heated to saturated vapor while pressure remains constant at 1.0, 14.7, 100, and 500, each in lbf/in.2 Comment.
what torque is needed at the end of the shaft to produce this if the diameter is equal to 300 mm. J=\pi\cdot\frac{D^4}{32}J=p·D432 \phi=\frac{TL}{JG}
gaseous hydrogen at 10 bars and 27 degrees celsius is stored stored in a 100 mm diameter spherical tank having a steel
Flowing in a convergent nozzle. At a particular location within the nozzle the pressure is 280kPa, the stream temperature is 345K, and the velocity is 150 m/s. If the cross-section area at this location is 9.29 x 10^3m^2,
Two resistors, R 1 = 100.0 ± 0.2? And R2 = 50.0 ± 0.1? are connected (a) in series and (b) in parallel. Calculate the uncertainty in the resistance of the resultant circuits. What is the maximum possible error in each case?
refrigerant-134a at 240 kpa and 20 degree celsius undergoes an isothermal process in a closed system until its quality
In a lecture demonstration, a professor pulls apart two hemispherical steel shells (diameter D) with ease using their attached handles. She then places them together, pumps out the air to an absolute pressure of p, and hands them to a bodybuilder ..
Determine the orientation of the neutral axis and calculate the maximum tensile stress σt and maximum compressive stress σc in the beam. Use the following numerical data: height h= 200 mm, width b 90 mm, constant thickness t = 15 mm, and θp= 19.2°..
an accident at a nuclear power plant causes the main valves to close and stop the main water flow that cools the
Show how did you do the maintenance during your workshop
A stream of air at 40 deg F, 30% rh flowing at 200 CFM is mixed with a stream of air at 95 deg F, 50% rh, flowing at 110 CFM. Determine the temperature and humidity ratio of the mixture.
Determine the expected diffraction angle for the first-order reflection from the (310) set of planes for BCC chromium when monochromatic radiation of wavelength 0.0711 nm is used.
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