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Engineering

Dixie Sosa

What are the two types of furnaces used in steel production?

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Engineering

Cameron Collins

A brass alloy is known to have a yield strength of 275 MPa (40,000 psi), a tensile strength of 380 MPa (55,000 psi), and an elastic modulus of 103 GPa (15.0*106 psi). A cylindrical specimen of this alloy 5.5 mm (0.22 in.) in diameter and 267 mm (10.52 in.) long is stressed in tension and found to elongate 7.0 mm (0.28 in.). On the basis of the information given, is it possible to compute the magnitude of the load that is necessary to produce this change in length? If not, explain why.

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Engineering

Darryl Arias

Considering a closed, stationary, rigid container with certain gas inside, the total mass of the gas is 2 kg, and a heating process goes from state 1 with internal energy 100 kJ/kg to state 2 with internal energy 200 kJ/kg. Find the overall heat transfer into the system during the process.

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Engineering

Izaiah Andrade

1. What is resilience engineering and how does it pertain to the current

corona virus crisis?

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Engineering

Kathy Moyer

The first step in calculating a truss is to calculate the reactions on the entire truss using a free body diagram. a) - True b) - False

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Engineering

Brown Sugar

Two vehicles arrive at an uncontrolled intersection from different streets at the same time 1. The driver on the right must yield to the vehicle on the left 2. The driver on the left must yield to the vehicle on the right 3. Both vehicles must stop 4. Neither vehicle must stop

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Engineering

Fuzzy

The revolving part of a rotating electrical machine. The rotor may be either the field or the armature, depending on the design of the machine.

O True O False

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Engineering

Lucy Bray

Which term describes the top or bottom component of a trussed beam

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Engineering

Karissa Woodward

1. Which type of fit implies that a piece will never fit? a. interference fit b. construction fit c. transition fit d. impeding fit

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Engineering

Guest

Harvesting wind energy using kites is: a) possible but currently very expensive. b) possible and currently inexpensive compared to wind turbines c) possible using a single kite.

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Engineering

Charlotte Avila

An airplane flies at a speed of 507 mph at an altitude of 10,000 ft. If the boundary layers on the wing surfaces behave as those on a flat plate,

(a) estimate the extent of laminar boundary layer flow along the wing. Assume a transitional Reynolds number of Rexcr=5 * 105. If the airplane maintains its 539 - mph speed but descends to sea-level elevation,

(b) estimate the extent of the laminar boundary layer flow.

(c) Will the portion of the wing covered by a laminar boundary layer increase or decrease compared with its value at 10,000 ft?

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Engineering

Viviana Davila

A food-services company with a 480 V, three-phase service entrance has the following set of loads:  A 7 ton walk-in refrigeration unit:3 COP of 1.2 and 0.78 lagging power factor  A conveyor belt system consisting of 10 continuous-duty induction motors: each 5 HP, 81% efficient, PF = 0.73 lagging  A 20 kVA T8 fluorescent lighting system with electronic ballasting (PF = 0.93 leading)  A 75,000 BTU/hr food dehydrator4 Consider the case when all systems are fully loaded. Calculate the reactive power required to compensate this customer's load to a 0.95 lagging power factor.

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Engineering

Rowan Avery

You live on a street that runs East to West. You just had 2 inche of snow and you live on the North side of the street. You return from class at 2PM and notice all the snow on your sidewalk is gone but across the street it is still there. No one removed the snow. How did it go away?

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Engineering

Beckham Rios

A wooden cylinder (0 02 x 0 02 x 0 1m) floats vertically in water with one-third of ts length immersed. a) - Determine the density of wood b) - Determine if this is a stable condition c) - Determine if the plece of wood would float stably in alcohol with density 700 kg/m3

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Engineering

Janiya Madden

Water at 120oC boils inside a channel with a flat surface measuring 45 cm x 45 cm. Air at 62 m/s and 20oC flows over the channel parallel to the surface. Determine the heat transfer rate to the air. Neglect wall thermal resistance.

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