Consider a Bevel Gear Differential used to drive the rear wheels in an automobile. Assume the input angular velocity is to the carrier and the output angular velocities drive the left and right wheels. If both wheels rotate at the same speed, what is the angular velocity of the planet gear?
None of these. |
The same angular velocity as the carrier |
The same angular velocity as the wheels. |
The planet gears have zero angular velocity relative to the carrier. |
In: Mechanical Engineering
Assume you know that a process is in statistical control. Is it a capable process? Give an explanation for your answer
In: Mechanical Engineering
write down the options of how to find the value of an enthalpy difference for air.Which one is most accurate??
In: Mechanical Engineering
Find the Examples of stability and resilience, except for ships.
In: Mechanical Engineering
A certain VOC compound has measured vapor pressures equal to 0.1316 psia at 31.65° F, and 0.2034 psia at 44.57° F. Determine the constants A and B in a Classius-Claperon type equation for estimating vapor pressures of this VOC. Use the equation to estimate the vapor pressure of the VOC at 77.0 deg F. Ans. 0.55 psia.
In: Mechanical Engineering
Q1. Explain how (EinScan-SE?) 3D Scanner work ?
In: Mechanical Engineering
Which of the following statements about a real Rankine cycle is true?
Top of Form
(A)
The entropy of the working fluid increases across every component.
(B)
The temperature of the working fluid increases across the pump.
(C)
The pressure of the working fluid increases across the boiler.
(D)
The work performed by the pump is equal to the product of the power into the pump and the pump efficiency.
In: Mechanical Engineering
An air-standard Carnot cycle is executed in a closed system between the temperature limits of 350 and 1200 K. The pressures before and after the isothermal compression are 150 and 300 kPa, respectively. If the net work output per cycle is 0.5 kJ, determine (a) the maximum pressure in the cycle, (b) the heat transfer to air, and (c) the mass of air. Assume variable specific heats for air.
In: Mechanical Engineering
In: Mechanical Engineering
A certain engine develops an output torque of 1800 + 200sin2?? Nm, where ? is the crank angle measured from some datum. This engine drives a machine which requires a driving torque of 1800 + 300sin?? Nm. The rotating parts have a mass of 100 kg, with a radius of gyration of 0.25 m. The maximum speed of the rotating parts is observed to be 250 rev/min. a) Sketch both the driving and load torque curves on the same axes b) Prove that during 1 cycle, the maximum energy is stored between ? and 5.56 radians c) Determine the maximum energy stored d) Determine the minimum speed of the rotating parts e) Determine the coefficient of fluctuation of speed f) Determine the mean power developed by the engine
In: Mechanical Engineering
1a. The latitude in Ames Iowa is 42 degrees. Most outside walls on homes are 10 feet high. As an energy conscious building designer, you would like the wall overhang to shade 90 percent of the wall at the summer solstice. Perform an analysis/design to determine the length of the overhang. show all work and discussion
1b. The latitude of UH is 30.6 degree (remember at the noon equinox solar angle from the vertical is 30.6 degree) Determine the degree above the horizon the sun sits at noon on the winter solstice. Repeat for the summer solstice. use sketches to perform and illustrate calculations
In: Mechanical Engineering
Compare and contrast response (how material behaves/responds when subjected to a load) and failure (where the material fails or the parts are damaged) properties and give three examples of each.
In: Mechanical Engineering
. A 20 mm diameter sphere made of aluminum alloy 2024 initially at a uniform temperature of 500 ºC is suddenly immersed in a saturated water bath maintained at atmospheric pressure. The surface of the sphere has an emissivity or 0.25. Determine.
a.) the total heat transfer coefficient for this initial condition, and
b.) what fraction of the total coefficient is contributed by radiation. (~180 W/m2 -K, ~ 7%)
In: Mechanical Engineering
Water vapor enters a subsonic diffuser at 0.5 bar,
175 °C, and 200 m/s. The diffuser inlet is 100 cm2. During passage
through the diffuser, the fluid velocity is reduced to 50 m/s,
pressure increases to 1.0 bar and heat transfer to the surroundings
is
0.5 kg/kJ. Determine
a) the final temperature,
b) the mass flow rate [kg/s] and
c) the outlet area [cm2]
In: Mechanical Engineering
In: Mechanical Engineering