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Engineering

Is a steam power plant a heat engine?

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Kaylah Anderson

Engineering

A heat pump has a work input of 2 kW and provides 7 kW of net heat transfer to heat a house. The system is steady, and there are no other work or heat interactions. Is this a violation of the first law of thermodynamics? Select one: a. Yes b. No

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Engineering

Consider a steady-state experiment in which the observed current due to reduction of Ox to R is 85 mA/cm2. What is the concentration gradient at the electrode surface? Knowing that the concentration of the species being reduced is zero at the electrode surface, and 0.10 mM in the bulk, how thick is the diffusion layer in this experiment?

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Maxwell Gilbert

Engineering

Kirchoff's Law states that, by the time current has returned to its source, all

must be used

Resistance

Electron flow

Voltage

Wattage

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Engineering

What other stuff did percy spencer invent

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Engineering

A college student wakes up hungry. He turns on the coffee maker (average wattage 1200 W), puts some oatmeal in the microwave oven (1450 W) to cook, puts a couple of slices of bread in the toaster (1146 W), and starts making scrambled eggs in the electric frying pan (1196 W). All of these appliances in his dorm room are supplied by a 120 V (rms) branch circuit protected by a 50 A (rms) circuit breaker.

Determine the total rms current in the current breaker.

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Engineering

By celebrating the freedom of contract that distinguished the wage worker from the indentured servant of previous generations or the slave in the southern cotton field, political leaders claimed the American Revolution's legacy for the North. But the rise of industrial child labor, the demands of workers to unionize, the economic vulnerability of women, and the influx of non-Anglo immigrants left many In Americans questioning the meaning of liberty after the market revolution. Explain in what forms, actions or politics did Americans question the meaning of liberty.

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Engineering

List the functional units (Instruction memory, Register file, ALU, Data memory) that will be used by the R-Type instruction class:

A. Instruction Memory

B. Register file

C. ALU

D. Data Memory

List the functional units (Instruction memory, Register file, ALU, Data memory) that will be used by the LDUR instruction class:

A. Instruction Memory

B. Register file

C. ALU

D. Data Memory

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Dallas Harrington

Engineering

Functions of a chain-link fence include (mark all that apply):

a. Supports surveillance and other security functions

b. Protects against explosives

c. Assists in screening entry into the facility

d. Deters casual intruders

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Engineering

Differentiate between four key concepts-supply chain, value chain, integrated value chain and supply ecosystem.

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Engineering

An aircraft is in a steady level turn at a flight speed of 200 ft/s and a turn rate about the local vertical of 5 deg/s. Thrust from the engine is along the flight direction. Given the weight of the aircraft as 50,000 lb and L/D of 10, determine the lift, drag and thrust required for the given equilibrium flight. Assume g = 32.2 ft/s^2

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Engineering

Explain how load cell can be used for force measurement.

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Engineering

It is desired to produce and aligned carbon fiber-epoxy matrix composite having a longitudinal tensile strength of 800 MPa. Calculate (a) the critical fiber length (in mm), and (b) the volume fraction of fibers necessary if (1) the average fiber diameter is 0.017 mm, (2) the average fiber length is 2.3 mm, (3) the fiber fracture strength is 5500 MPa, (4) the fiber-matrix bond strength is 18 MPa, (5) the matrix stress at fiber failure is 13.5 MPa.

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Engineering

Can a 1½ " conduit, with a total area of 2.04 square inches, be filled with wires that total 0.93 square inches if the maximum fill for that conduit is 40%?

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Engineering

How do we define energy efficiency

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