Power Drop in Brush DC Generator Calculator

✖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%
✖Brush Voltage Drop refers to the voltage that is lost across the brushes and the commutator as the electrical current passes through them.ⓘ Brush Voltage Drop [V_BD]			+10% -10%

✖Brush Power Drop refers to the power that is lost due to the voltage developed across the brushes and the commutator as the electrical current passes through them.ⓘ Power Drop in Brush DC Generator [P_BD]

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Formula

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Power Drop in Brush DC Generator

Formula

`"P"_{"BD"} = "I"_{"a"}*"V"_{"BD"}`

Example

`"4.3875W"="0.75A"*"5.85V"`

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Power Drop in Brush DC Generator Solution

STEP 0: Pre-Calculation Summary

Formula Used

Brush Power Drop = Armature Current*Brush Voltage Drop
P_BD = I_a*V_BD
This formula uses 3 Variables

Variables Used

Brush Power Drop - (Measured in Watt) - Brush Power Drop refers to the power that is lost due to the voltage developed across the brushes and the commutator as the electrical current passes through them.
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.
Brush Voltage Drop - (Measured in Volt) - Brush Voltage Drop refers to the voltage that is lost across the brushes and the commutator as the electrical current passes through them.

STEP 1: Convert Input(s) to Base Unit

Armature Current: 0.75 Ampere --> 0.75 Ampere No Conversion Required
Brush Voltage Drop: 5.85 Volt --> 5.85 Volt No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

P_BD = I_a*V_BD --> 0.75*5.85

Evaluating ... ...

P_BD = 4.3875

STEP 3: Convert Result to Output's Unit

4.3875 Watt --> No Conversion Required

FINAL ANSWER

4.3875 Watt <-- Brush Power Drop

(Calculation completed in 00.020 seconds)

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Created by Urvi Rathod

Vishwakarma Government Engineering College (VGEC), Ahmedabad

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< 17 DC Generator Characteristics Calculators

Mechanical Efficiency of DC Generator using Armature Voltage

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

EMF for DC Generator for Wave Winding

Go EMF = (Number of Poles*Rotor Speed*Flux per Pole*Number of Conductor)/120

Stray Losses of DC Generator given Converted Power

Go Stray Loss = Input Power-Mechanical Losses-Core Loss-Converted Power

Core Losses of DC Generator given Converted Power

Go Core Loss = Input Power-Mechanical Losses-Converted Power-Stray Loss

Armature Resistance of DC Generator using Output Voltage

Go Armature Resistance = (Armature Voltage-Output Voltage)/Armature Current

EMF for DC Generator with Lap Winding

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

Back EMF of DC Generator given Flux

Go EMF = Back EMF Constant*Angular Speed*Flux per Pole

Power Drop in Brush DC Generator

Go Brush Power Drop = Armature Current*Brush Voltage Drop

Electrical Efficiency of DC Generator

Go Electrical Efficiency = Output Power/Converted Power

Induced Armature Voltage of DC Generator given Converted Power

Go Armature Voltage = Converted Power/Armature Current

Mechanical Efficiency of DC Generator using Converted Power

Go Mechanical Efficiency = Converted Power/Input Power

Armature Current of DC Generator given Power

Go Armature Current = Converted Power/Armature Voltage

Armature Power in DC Generator

Go Amature Power = Armature Voltage*Armature Current

Field Copper Loss in DC Generator

Go Copper Loss = Field Current^2*Field Resistance

Output Voltage in DC Generator using Converted Power

Go Output Voltage = Converted Power/Load Current

Overall Efficiency of DC Generator

Go Overall Efficiency = Output Power/Input Power

Converted Power in DC Generator

Go Converted Power = Output Voltage*Load Current

Power Drop in Brush DC Generator Formula

Brush Power Drop = Armature Current*Brush Voltage Drop
P_BD = I_a*V_BD

What is Brush Drop?

The brush drop depends upon the brush contact voltage drop and the armature current Ia. The voltage drop occurring over a large range of armature currents, across a set of brushes is approximately constant. If the value of the brush voltage drop is not given then it is usually assumed to be about 2 volts.

How to Calculate Power Drop in Brush DC Generator?

Power Drop in Brush DC Generator calculator uses Brush Power Drop = Armature Current*Brush Voltage Drop to calculate the Brush Power Drop, Power Drop in Brush DC Generator is the loss taking place between the commutator and the carbon brushes. The voltage drop occurring over a large range of armature currents, across a set of brushes is approximately constant. If the value of the brush voltage drop is not given then it is usually assumed to be about 2 volts. Thus, the brush drop loss is taken as 2Ia. Brush Power Drop is denoted by P_BD symbol.

How to calculate Power Drop in Brush DC Generator using this online calculator? To use this online calculator for Power Drop in Brush DC Generator, enter Armature Current (I_a) & Brush Voltage Drop (V_BD) and hit the calculate button. Here is how the Power Drop in Brush DC Generator calculation can be explained with given input values -> 4.3875 = 0.75*5.85.

FAQ

What is Power Drop in Brush DC Generator?

Power Drop in Brush DC Generator is the loss taking place between the commutator and the carbon brushes. The voltage drop occurring over a large range of armature currents, across a set of brushes is approximately constant. If the value of the brush voltage drop is not given then it is usually assumed to be about 2 volts. Thus, the brush drop loss is taken as 2Ia and is represented as P_BD = I_a*V_BD or Brush Power Drop = Armature Current*Brush Voltage Drop. Armature Current is defined as the current developed in the armature of an electrical DC generator due to movement of rotor & Brush Voltage Drop refers to the voltage that is lost across the brushes and the commutator as the electrical current passes through them.

How to calculate Power Drop in Brush DC Generator?

Power Drop in Brush DC Generator is the loss taking place between the commutator and the carbon brushes. The voltage drop occurring over a large range of armature currents, across a set of brushes is approximately constant. If the value of the brush voltage drop is not given then it is usually assumed to be about 2 volts. Thus, the brush drop loss is taken as 2Ia is calculated using Brush Power Drop = Armature Current*Brush Voltage Drop. To calculate Power Drop in Brush DC Generator, you need Armature Current (I_a) & Brush Voltage Drop (V_BD). With our tool, you need to enter the respective value for Armature Current & Brush Voltage Drop 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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