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Mechanical Engineering formulas

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Mechanical Engineering

Specific Power Consumption in cutting

Mechanical Engineering

\[U_{s} = \frac{P_{Z} \cdot V_{c}}{M \cdot R \cdot R}\]
GATE
Open calculator Mechanical Engineering

Specific Weight

Mechanical Engineering

\[s = \gamma \cdot \gamma_{w}\]
GATE
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Speed ratio

Mechanical Engineering

\[SR = \frac{Number_{of\_teeth\_on\_driver\_gears}}{Number_{of\_teeth\_on\_driving\_gear}}\]
GATE
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Standard deviation in PERT

Mechanical Engineering

\[\sigma = \frac{t_{p} - t_{0}}{6}\]
GATE
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Standard Time in Johnson’s Problem

Mechanical Engineering

\[Standard_time = Normal_time + allowances\]
GATE
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Stanton Number (St)

Mechanical Engineering

\[St = \frac{Heat_{transfer\_coefficient}}{Heat_{flow\_per\_unit\_temperature\_rise}}\]
GATE
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Strain energy due to axial loads

Mechanical Engineering

\[U = ( ( ( ( P ^ 2 ) \cdot L ) ) / ( ( 2 \cdot AE ) ) )\]
GATE
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Strain energy due to Bending

Mechanical Engineering

\[U = ( ( ( ( M ^ 2 ) \cdot L ) ) / ( ( 2 \cdot EI ) ) )\]
GATE
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Strain energy due to Pure Shear

Mechanical Engineering

\[U = \frac{{\tau}^{2} \cdot V}{2 \cdot G}\]
GATE
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Strain energy due to Torsion

Mechanical Engineering

\[U = ( ( ( ( T ^ 2 ) \cdot L ) ) / ( ( 2 \cdot GJ ) ) )\]
GATE
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Strain Energy in Solid Cylinder

Mechanical Engineering

\[U = \frac{{\tau}^{2}}{4 \cdot G} \cdot Volume_{of\_shaft}\]
GATE
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Strain Energy in Torsion

Mechanical Engineering

\[U = \frac{1}{2} \cdot T \cdot \theta\]
GATE
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Strain in thin Spherical Shell

Mechanical Engineering

\[\sigma_{h} = \frac{p \cdot d}{2 \cdot t}\]
GATE
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Strength of Transverse Fillet Weld

Mechanical Engineering

\[P = 0.707 \cdot s \cdot l \cdot \sigma_{t}\]
GATE
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Stress concentration Factor

Mechanical Engineering

\[k_{t} = \frac{Highest_{value\_of\_actual\_stress\_near\_discontinuity}}{Nomin_{al\_stress\_obtained\_by\_elementary\_equations}}\]
GATE
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Stress in thin Spherical Shell

Mechanical Engineering

\[\sigma_{L} = \sigma_{h}\]
GATE
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Stresses due to sudden Loading

Mechanical Engineering

\[\sigma = \frac{2 \cdot F}{A}\]
GATE
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Tensile stress in the bolt

Mechanical Engineering

\[\sigma_{t} = \frac{P}{\frac{\pi}{4} \cdot {d_{c}}^{2}}\]
GATE
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Tension in Simple band brake

Mechanical Engineering

\[T_{1} = \sigma \cdot t \cdot w \cdot t\]
GATE
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Thermal diffusivity

Mechanical Engineering

\[\alpha = \frac{k}{\rho \cdot c}\]
GATE
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Thermal Resistance--Parallel Combination

Mechanical Engineering

\[R_{e} \cdot q = \frac{1}{\frac{1}{R_{1}} + \frac{1}{R_{2}} + \frac{1}{R_{3}}}\]
GATE
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Thermal Resistance-Series Combination

Mechanical Engineering

\[R_a \cdot q = R_1 + R_2 + R_3\]
GATE
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Thermal Stresses in Taper Bars

Mechanical Engineering

\[Stress = \alpha \cdot L \cdot \Delta \cdot T\]
GATE
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Time t in Purchase Model with Shortage

Mechanical Engineering

\[t = \frac{Q}{D}\]
GATE
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