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kolbaska11 [484]
2 years ago
7

The only way to know if a design will work in real-world conditions is to build a model, or prototype, based on the plan. This i

s part of which step in the Design Process?
a
Plan
b
Brainstorm
c
Create
d
Improve Design
Engineering
2 answers:
satela [25.4K]2 years ago
7 0

Answer:

Brainstorm

Explanation:

Engineers use the engineering design process when brainstorming solutions to real-life problems; they develop these solutions by testing and redesigning prototypes that work within given constraints

Lady bird [3.3K]2 years ago
3 0

Answer:

redesign

Explanation:

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Assumptions:

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Explanation:

Otto cycle is a thermodynamic cycle widely used in automobile engines, in which an amount of gas (air) experiences changes of pressure, temperature, volume, addition of heat, and removal of heat. The cycle is composed by (following the P-V diagram):

  • Intake <em>0-1</em>: the mass of working fluid is drawn into the piston at a constant pressure.
  • Adiabatic compression <em>1-2</em>: the mass of working fluid is compressed isentropically from State 1 to State 2 through compression ratio (r).

        r =\frac{V_1}{V_2}

  • Ignition 2-3: the volume remains constant while heat is added to the mass of gas.
  • Expansion 3-4: the working fluid does work on the piston due to the high pressure within it, thus the working fluid reaches the maximum volume through the compression ratio.

         r = \frac{V_4}{V_3} = \frac{V_1}{V_2}

  • Heat Rejection 4-1: heat is removed from the working fluid as the pressure drops instantaneously.
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If the system produces enough work, the automobile and its occupants will propel. On the other hand, the efficiency of the Otto Cycle is defined as follows:

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where:

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Ideal air is the working fluid, as stated before, for which its specific heat ratio can be considered constant.

           \gamma = 1.4

Answer:

See image attached.

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Steam at 75 kPa and 8 percent quality is contained in a spring-loaded piston–cylinder device, as shown in Figure, with an initia
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Work Done (Area Under PV curve) = 1/2 x (P1 + P2) x ( V1 - V2)

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Q = 13781.618 kJ/kg

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Answer:

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Following is attached the solution or the question given.

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