What is the formula for counting the energy that can be made by a dynamo?

Answer 1

i think it goes from kinetic to electric + sound

Answer 2

Partial Answer:

In case of dynamos ,the output is generally in terms of power.If you calculate output power then you can know the energy by multiplying it with time.
Calculation of power:
In ideal conditions i.e no losses, Output electrical energy=Input mechanical energy.But we must consider the losses that occur in a dynamo(or generator).The losses that occur are iron or core losses and copper losses.Iron losses are of two types

1)Hysteresis losses(in watts)=khBfv

2)Eddy current losses(in watts)=keB2f2t2
kh=hysteresis constant
ke=eddy current constant
B=magnetic flux density
f=frequency
t=thickness
v=volume
Copper losses:Ise2R+Ish2R(Series field copper losses+shunt field copper losses)

Apart from these losses there are armature losses and mechanical losses.

Armature losses:Ia2R

Basically we calculate output power by subtracting the losses from the input power.
Input power=output power+losses
=> Output power=input power-losses
=>Output power=input power - Ia2Ra - Ise2R - Ish2R
- mechanical losses-other losses
But for converting mechanical to electrical energy without using field winding,then the equation will be:
Output power=input power - Ia2Ra - mechanical losses
- other losses
Calculate the output power and multiply it with time(considering power independent of time) to get the energy produced.
Ia can be calculated from the following equation E=IaRa + VL + BCD (BCD=brush contact drop negligible)

VL=load voltage

Ra=armature resistance

E=emf produced=oNZP/60A

o = flux due to rotation
N=speed in r.p.m
Z=number of armature conductors
P=number of poles
A=number of parallel paths

Answer 3

The dynamo transforms mechanical energy into electrical energy.