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Alik [6]
3 years ago
10

Before you calculate the moment capacity for a steel beam, you have to determine the classification of beam.

Engineering
1 answer:
kirill [66]3 years ago
6 0

Answer:

True

Explanation:

True - because different classification of steel beam have different yield strength.

The moment capacity for a steel beam is given by;

M = Mn / Ωₙ

where;

M - the maximum moment acting on the beam

Ωₙ - is the Safety Factor for Elements in Bending = 1.67

Mn - nominal moment of the steel, given as

M_n = Z_x *f_y

where;

Zₓ - the Plastic Section Modulus in the x or strong axis.

f_y - is the Yield Strength of the Steel (A36W, A46 W or A50W)

A36W = 36 ksi

A46 W = 46 ksi

A50W = 50 ksi

Thus, before you calculate the moment capacity for a steel beam, you have to determine the classification of beam, for the yield strength of the steel beam.

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For an Otto cycle, plot the cycle efficiency as a function of compression ratio from 4 to 16.
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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):

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        r =\frac{V_1}{V_2}

  • Ignition 2-3: the volume remains constant while heat is added to the mass of gas.
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         r = \frac{V_4}{V_3} = \frac{V_1}{V_2}

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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:

           \eta = 1-(\frac{1}{r^{\gamma - 1} } )

where:

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

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Answer:

See image attached.

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A gas in a piston–cylinder assembly undergoes a compression process for which the relation between pressure and volume is given
viktelen [127]

Answer:

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PV^n = constant.

That is, P1V1^n = P2V2^n

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Substitute all the parameters into the formula

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Work = (8000 - 6080)/ -0.3

Work = -1920/0.3

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