Input Power of DC Motor Calculator

✖Supply Voltage refers to the voltage developed at the supply terminal of a generator.ⓘ Supply Voltage [V_s]			+10% -10%
✖Armature Current is defined as the current developed in the armature of an electrical DC generator due to movement of rotor.ⓘ Armature Current [I_a]			+10% -10%

✖Input Power refers to the power input required to rotate the armature of the dc machine, which in turn generates electrical/mechanical power. The input power is provided by an external source.ⓘ Input Power of DC Motor [P_in]

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Formula

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Input Power of DC Motor

Formula

`"P"_{"in"} = "V"_{"s"}*"I"_{"a"}`

Example

`"180W"="240V"*"0.75A"`

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Download DC Machine Characterstics Formulas PDF

Input Power of DC Motor Solution

STEP 0: Pre-Calculation Summary

Formula Used

Input Power = Supply Voltage*Armature Current
P_in = V_s*I_a
This formula uses 3 Variables

Variables Used

Input Power - (Measured in Watt) - Input Power refers to the power input required to rotate the armature of the dc machine, which in turn generates electrical/mechanical power. The input power is provided by an external source.
Supply Voltage - (Measured in Volt) - Supply Voltage refers to the voltage developed at the supply terminal of a generator.
Armature Current - (Measured in Ampere) - Armature Current is defined as the current developed in the armature of an electrical DC generator due to movement of rotor.

STEP 1: Convert Input(s) to Base Unit

Supply Voltage: 240 Volt --> 240 Volt No Conversion Required
Armature Current: 0.75 Ampere --> 0.75 Ampere No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

P_in = V_s*I_a --> 240*0.75

Evaluating ... ...

P_in = 180

STEP 3: Convert Result to Output's Unit

180 Watt --> No Conversion Required

FINAL ANSWER

180 Watt <-- Input Power

(Calculation completed in 00.004 seconds)

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< 16 DC Machine Characterstics Calculators

Mechanical Efficiency given Induced Voltage and Armature Current

Go Mechanical Efficiency = (Electrical Efficiency*Output Voltage*Armature Current)/(Angular Speed*Torque)

Electrical Efficiency of DC Machine

Go Electrical Efficiency = (Mechanical Efficiency*Angular Speed*Torque)/(Output Voltage*Armature Current)

Design Constant of DC Machine

Go Machine Constant = (Number of Conductors*Number of Poles)/(2*pi*Number of Parallel Paths)

Angular Speed of DC Machine using Kf

Go Angular Speed = Armature Voltage/(Machine Constant*Magnetic Flux*Armature Current)

Armature Induced Voltage of DC Machine given Kf

Go Armature Voltage = Machine Constant*Armature Current*Magnetic Flux*Angular Speed

Back EMF of DC Generator

Go Back EMF = Output Voltage-(Armature Current*Armature Resistance)

Magnetic Flux of DC Machine given Torque

Go Magnetic Flux = Torque/(Machine Constant*Armature Current)

EMF Generated in DC Machine with Lap Winding

Go EMF = (Rotor Speed*Number of Conductors*Flux per Pole)/60

Torque generated in DC Machine

Go Torque = Machine Constant*Magnetic Flux*Armature Current

Coil Span of DC Motor

Go Coil Span Factor = Number of Commutator Segments/Number of Poles

Front Pitch for DC Machine

Go Front Pitch = ((2*Number of Slots)/Number of Poles)-1

Back Pitch for DC Machine

Go Back Pitch = ((2*Number of Slots)/Number of Poles)+1

Input Power of DC Motor

Go Input Power = Supply Voltage*Armature Current

Pole Pitch in DC Generator

Go Pole Pitch = Number of Slots/Number of Poles

Back Pitch for DC Machine given Coil Span

Go Back Pitch = Coil Span*Coil Span Factor

Output Power of DC Machine

Go Output Power = Angular Speed*Torque

Input Power of DC Motor Formula

Input Power = Supply Voltage*Armature Current
P_in = V_s*I_a

What is a DC shunt motor?

A DC shunt motor is a type of self-excited DC motor, and it is also known as a shunt wound DC motor. The field windings in this motor can be connected in parallel to the armature winding.

How to Calculate Input Power of DC Motor?

Input Power of DC Motor calculator uses Input Power = Supply Voltage*Armature Current to calculate the Input Power, The Input Power of DC Motor formula is defined as the power supplied at the input terminal of a dc motor. Input Power is denoted by P_in symbol.

How to calculate Input Power of DC Motor using this online calculator? To use this online calculator for Input Power of DC Motor, enter Supply Voltage (V_s) & Armature Current (I_a) and hit the calculate button. Here is how the Input Power of DC Motor calculation can be explained with given input values -> 180 = 240*0.75.

FAQ

What is Input Power of DC Motor?

The Input Power of DC Motor formula is defined as the power supplied at the input terminal of a dc motor and is represented as P_in = V_s*I_a or Input Power = Supply Voltage*Armature Current. Supply Voltage refers to the voltage developed at the supply terminal of a generator & Armature Current is defined as the current developed in the armature of an electrical DC generator due to movement of rotor.

How to calculate Input Power of DC Motor?

The Input Power of DC Motor formula is defined as the power supplied at the input terminal of a dc motor is calculated using Input Power = Supply Voltage*Armature Current. To calculate Input Power of DC Motor, you need Supply Voltage (V_s) & Armature Current (I_a). With our tool, you need to enter the respective value for Supply Voltage & Armature Current and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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