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Electrical Engineering formulas

130 results. Open any card and leave one value empty to calculate it.

Electrical Engineering

P.U Full load Cu loss

Electrical Engineering

\[P_{U\_Full\_load\_Cu\_loss} = \frac{FL \cdot Cu_{loss\_in\_watts}}{\frac{VA_{rating\_of} \cdot t}{f}}\]
GATE
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P.U iron loss

Electrical Engineering

\[P_{U\_iron\_loss} = \frac{Iron_{loss\_in\_watts}}{\frac{VA_{rating\_of} \cdot t}{f}}\]
GATE
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Parallel Paths in Lap winding

Electrical Engineering

\[A = P\]
GATE
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Parallel Paths in wave winding

Electrical Engineering

\[A = P\]
GATE
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Pitch factor

Electrical Engineering

\[Pitch_{factor} \cdot K_{p} = \frac{elecrrical_{angle\_of\_coil}}{180} \cdot 100\]
GATE
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Plant Capacity factor

Electrical Engineering

\[Plant_{Capacity\_factor} = \frac{Average_{demand}}{Installed_{capcity}}\]
GATE
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Plant use factor

Electrical Engineering

\[Plant_use_factor = ( ( Actual_energy_produced ) / ( Plant_capacity \cdot hours \cdot ( the_plant_has_been_in_operation ) ) )\]
GATE
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Power output

Electrical Engineering

\[Output = WQH \cdot \eta\]
GATE
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Primary circuit impedance referred to the secondary

Electrical Engineering

\[Z_{12} = Z_{1} \cdot {\frac{N_{2}}{N_{1}}}^{2}\]
GATE
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Primary resistance drop

Electrical Engineering

\[P_{U\_primary\_resistance\_drop} = \frac{I_{1} \cdot R_{1}}{E_{1}}\]
GATE
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Reserve Capacity

Electrical Engineering

\[Reserve_Capacity = Plant_capacity - max_demand\]
GATE
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Resistance drops on both sides of the t/f

Electrical Engineering

\[\frac{I_{1} \cdot R_{01}}{E_{1}} = \frac{I_{2} \cdot R_{02}}{E_{2}}\]
GATE
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Resistance referring to primary

Electrical Engineering

\[R_01 = ( ( W_SC ) / ( I_SC ^ ( 2 ) ) )\]
GATE
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Resistance required for no transient oscillations

Electrical Engineering

\[R = 0.5 \cdot \sqrt{\frac{L}{C}}\]
GATE
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Resulting electric power produced

Electrical Engineering

\[P_conv = E_A \cdot I_A\]
GATE
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Rotor copper losses

Electrical Engineering

\[Rotor_copper_losses = S \cdot Rotor_input\]
GATE
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Rotor frequency of induction machine

Electrical Engineering

\[f_{2} = \frac{P \cdot SN_{s}}{120}\]
GATE
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Rotor leakage reactance at any slips

Electrical Engineering

\[Rotor_leakage_reactance_at_any_slips = 2 \cdot \pi \cdot xf_2 \cdot l_2\]
GATE
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Secondary resistance drop

Electrical Engineering

\[P_{U\_secondary\_resistance\_drop} = \frac{I_{2} \cdot R_{2}}{E_{2}}\]
GATE
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Series motor armature induced torque

Electrical Engineering

\[T = k \cdot m \cdot la ^ ( 2 )\]
GATE
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Series motor armature induced voltage

Electrical Engineering

\[E_{a} = k_{f} \cdot \omega \cdot l_{a}\]
GATE
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Series motor terminal voltage

Electrical Engineering

\[V = E_a + l_a \cdot R_a + l_a \cdot R_f\]
GATE
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Shunt field current

Electrical Engineering

\[I_{s} \cdot f = \frac{V_{x}}{R_{f}}\]
GATE
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Shunt Generator Armature induced Torque

Electrical Engineering

\[T = k_f \cdot l_a\]
GATE
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