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Engineering

Guest

If a motor driven by PWM using half-bridge operation has a speed of 1,426 rpm at a duty cycle of 100% (full forward), what will its speed be at a duty cycle of 47%

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Engineering

Cecelia Donaldson

5) /

التاريخ

الموضوع:

1. Acyclist moves 12 km due to north and then

5km due east in 3hr.

Find / as his average speed

b) average vel velocity, in m/s

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Engineering

Reid Lawrence

After a night of heavy rain, a thick coating of morning fog has all but stopped the flow of morning traffic. Which

of the four main causes of accidents is involved in this situation?

Select the best option

1. Driver

2. Vehicle

3. Roadway

4. Weather conditions

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Engineering

Patience Holden

5. A non-cold-worked brass specimen of average grain size 0.01 mm has a yield strength of 150 MPa. Estimate the yield strength of this alloy after it has been heated to 500°C for 1000 s, if it is known that the value of σ0 is 25 MPa.

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Engineering

Sexton

What is the pressure drop when a liquid (viscosity = 0.001 Pa-s, density = 1000 kg/m3) flows at a rate of 40 liters/minute over a 2-cm diameter steel pipe that is 100 meters long? Effective roughness factor (k) is 0.046 mm. By what percent has the pressure drop increased compared to the hydraulically smooth pipe found in problem #2? Estimate the electrical power required to a pump that would support the calculated flow rate. Assume the pump is 70% efficient. Note the power required to pump is = pressure drop * flow rate = [ΔP]*Q. Make sure your units are consistent.

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Engineering

Beckett Delacruz

An example of a robot functionality would be:

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Engineering

Hayley Ayala

According to the increasing order of toughness, list the following materials. Pearlite, martensite, bainite, spheroidite.

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Engineering

Hope Richardson

Water flows steadily through a section of piping in a heat exchanger at a constant pressure of 1.5 bar, entering as a vapor and exiting as a liquid. One side of the pipe is maintained at 400K and receives 20 kJ/s of energy by heat transfer, while the other side of the pipe is maintained at 800K and rejects 40 kJ/s of energy by heat transfer. Is this process possible, impossible, or indeterminate from the information given

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Engineering

Leland Reyes

for the given sand, the maximum and minimum dry unit weights are 108 lb/ft3 and 92 lb/ft3, respectively. given that Gs=2.65, determine the moist unit weight of the soil when the relative density is 60% and moisture content is 8%.

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Engineering

Madeline Welch

How does heat conduction differ from convection?

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Engineering

Houston

How does a catapult incorporate technology?

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Engineering

Celeste Lin

A steady green traffic light means

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Engineering

Gina Mcclain

Beam carries loads that are parallel to ts longitudinal axis. a) - True b) - False

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Engineering

Danny Meyers

Name 2 things that change in motion depends on.

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Engineering

Myah Marsh

Find the largest number. The process of finding the maximum value (i. e., the largest of a group of values) is used frequently in computer applications. For example, an app that determines the winner of a sales contest would input the number of units sold by each salesperson. The sales person who sells the most units wins the contest. Write pseudocode, then a C# app that inputs a series of 10 integers, then determines and displays the largest integer. Your app should use at least the following three variables:

Counter: Acounter to count to 10 (i. e., to keep track of how many nimbers have been input and to determine when all 10 numbers have been processed).

Number: The integer most recently input by the user.

Largest: The largest number found so far.

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