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Engineering

Introduction to gear and gear ratios: If you have two gears of the same size does the output speed increase, decrease, or remain the same constant?

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Engineering

Can a real refrigerator have higher COP than the COP of the Carnot refrigerator?

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Engineering

Once Joe Martin reports his concerns to senior management at corporate headquarters and requests that the Ethicana plant operations be suspended until the faulty equipment, safety and operational issues are corrected it would be unethical for Joe to file a report with the Ethicana Worker Safety and Environmental Protection Agency if the plant continues in operation without repairs.

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Engineering

What is arduino and for what it is used

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Engineering

Write a function digits () that accepts a non-negative integer argument n and returns the number of digits in it's decimal representation. For credit, you should implement this using a loop and repeated integer division; you should not use math. log (), math. log10 (), or conversion to string

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Engineering

1. Nitrogen at an initial state of 300 K, 150 kPa, and 0.2 m3 is compressed slowly in an isothermal process to a final pressure of 800 kPa. Determine the work done during this process.

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Deandre Russell

Engineering

D * 4.80 It is required to use a peak rectifier to design a dc power supply that provides an average dc output voltage of 12 V on which a maximum of ±1-V ripple is allowed. The rectifier feeds a load of 200. The rectifier is fed from the line voltage (120 V rms, 60 Hz) through a transformer. The diodes available have 0.7-V drop when conducting. If the designer opts for the half-wave circuit: (a) Specify the rms voltage that must appear across the transformer secondary. (b) Find the required value of the filter capacitor. (c) Find the maximum reverse voltage that will appear across the diode, and specify the PIV rating of the diode. (d) Calculate the average current through the diode during conduction. (e) Calculate the peak diode current.

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Engineering

How much would a 10.0 inch long, 0.25 inch diameter AISI 1020 Q&T bolt stretch when loaded with 2000 lbs?

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Engineering

Which is an obsolete technology

steam engine

gasoline engine

jet engine

diesel engine

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Engineering

If you don't tailgate, you can avoid unnecessary braking and acceleration and improve your fuel economy by ... %.

5-10

20-40

50-60

30-45

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Engineering

You are wearing skates and standing on a frictionless ice rink. Strapped to your back is jet pack that can produce a constant horizontal force of 75 lbf = 334 N. If you switch on the jet pack, what is your speed after 5 seconds?

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Engineering

If water is flowing into the tank at the rate of 100 gallons per hour and flowing

out of the tank at a constant rate of one gallon per minute, the water level in the

tank will:

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Ashlee Patterson

Engineering

An adiabatic air compressor is to be powered by a direct coupled adiabatic steam turbine that is also driving a generator. Steam enters the turbine at 12.5 MPa and 500-degree C at a rate of 25 Kg/s and exits at 10 kPa and a quality (or dryness factor) of 0.92. Air enters the compressor at 98 kPa and 295 K at a rate of 10 Kg/s and exits at 1 MPa and 620 K. determine the net power delivered to the generator by the turbine.

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Engineering

The size of an engine is called the engine

A. bore.

B. stroke.

C. displacement.

D. mass.

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Engineering

5. Steel balls 50 mm in diameter are annealed by heating to 1200 K and then slowly cooling to 450 K in an air environment for which the ambient temperature is 300 K and h = 20 W/m2 ·K. Assuming the properties of the steel to be k = 40 W/m·K, rho = 7800 kg/m3, and c = 600 J/kg·K. Estimate the time required for this cooling process.

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