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Mechanical Engineering formulas

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Mechanical Engineering

Absolute Humidity in Psychrometry

Mechanical Engineering

\[Absolute_Humidity = ( ( Weight_of_Water_Vapour ) / ( Volume_of_Air \cdot ( Mixture ) ) )\]
GATE
Open calculator Mechanical Engineering

Absorptivity

Mechanical Engineering

\[A \cdot bsorptivity \cdot \alpha = \frac{Energy_{absorbed} \cdot Q_{a}}{T_{otal\_incident\_radiation} \cdot Q}\]
GATE
Open calculator Mechanical Engineering

Addendum circle diameter of helical gear

Mechanical Engineering

\[d_{a} = \frac{z \cdot m_{n}}{cos} + 2 \cdot m_{n}\]
GATE
Open calculator Mechanical Engineering

Angle of twist in Torsion

Mechanical Engineering

\[\theta = \frac{T \cdot l}{G \cdot J}\]
GATE
Open calculator Mechanical Engineering

Aspiration Effect

Mechanical Engineering

\[R = \sqrt{\frac{h_{c}}{h_{t}}}\]
GATE
Open calculator Mechanical Engineering

Atomic Packing Factor (APF)

Mechanical Engineering

\[Atomic_{Packing\_Factor} \cdot APF = \frac{Volume_{of\_atoms\_in\_a\_cell}}{V_{olume\_of\_unit\_cell}}\]
GATE
Open calculator Mechanical Engineering

Axial flexibility

Mechanical Engineering

\[\frac{L}{EA} = Axial_{flexibility}\]
GATE
Open calculator Mechanical Engineering

Axial load or thrust in cone clutch

Mechanical Engineering

\[w_{n} = \frac{w}{\sin\left(\alpha\right)}\]
GATE
Open calculator Mechanical Engineering

Axial pitch for helical gear

Mechanical Engineering

\[P_{a} = \frac{P}{tan}\]
GATE
Open calculator Mechanical Engineering

Axial stiffness

Mechanical Engineering

\[\frac{EA}{L} = Axial_{flexibility}\]
GATE
Open calculator Mechanical Engineering

Beam strength of helical gear

Mechanical Engineering

\[S_{b} = m_{n} \cdot b \cdot \sigma_{b} \cdot Y\]
GATE
Open calculator Mechanical Engineering

Beam with eccentric point load

Mechanical Engineering

\[\delta = \frac{w \cdot {a}^{3} \cdot {b}^{3}}{3 \cdot EI \cdot {L}^{3}}\]
GATE
Open calculator Mechanical Engineering

Beam with point load at centre

Mechanical Engineering

\[\delta = \frac{w \cdot {L}^{3}}{192 \cdot EI}\]
GATE
Open calculator Mechanical Engineering

Beam with uniformly distributed load

Mechanical Engineering

\[\delta = \frac{w \cdot {L}^{4}}{384 \cdot EI}\]
GATE
Open calculator Mechanical Engineering

Bend Allowance

Mechanical Engineering

\[Bend_{Allowance} = \theta \cdot \left(R + K \cdot t\right)\]
GATE
Open calculator Mechanical Engineering

Bending Stress

Mechanical Engineering

\[\sigma_{b} = \frac{My}{I}\]
GATE
Open calculator Mechanical Engineering

Boundary layer thickness

Mechanical Engineering

\[\delta = \frac{0.37 \cdot x}{{Re_{x}}^{\frac{1}{5}}}\]
GATE
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Brake Thermal Efficiency

Mechanical Engineering

\[\eta_{Brake} = \frac{Brake_{Power}}{Energy_{in\_fuel\_per\_second}}\]
GATE
Open calculator Mechanical Engineering

Braking Force on The Drum

Mechanical Engineering

\[Braking_force_on_the_drum = ( T_1 - T_2 )\]
GATE
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Brinell hardness number (BHN)

Mechanical Engineering

\[K = 0.16 \cdot {\frac{B \cdot H \cdot N}{100}}^{2}\]
GATE
Open calculator Mechanical Engineering

Bulk Modulus

Mechanical Engineering

\[\frac{Bulk_{stress}}{Bulk_{strain}} = Bulk_{Modulus}\]
GATE
Open calculator Mechanical Engineering

Capacity ratio in heat exchanger

Mechanical Engineering

\[R = \frac{m_{c} \cdot c_{c}}{m_{h} \cdot c_{h}}\]
GATE
Open calculator Mechanical Engineering

Castigliano’s first theorem

Mechanical Engineering

\[\delta = \frac{U}{P}\]
GATE
Open calculator Mechanical Engineering

Centrifugal force on each shoe in Centrifugal Clutch

Mechanical Engineering

\[p_{c} = m \cdot {\omega}^{2} \cdot r\]
GATE
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