The electrical generator is a device that is designed to convert mechanical work into electrical power. The mechanical work rotates the generator turbine and this change in the magnetic field of the generator induct the emf on the other side.$$

Mechanical work. $$

The most important difference between the electric motor and generator is that the generator doesn’t need electrical power for work. By converting the mechanical work, the generator produces electricity which can be used for the supply of other electrical devices.

On the other hand, the motor can’t be used without electricity. The motor converts the electrical power to mechanical work which can be used for moving some objects, lifting an object, grinding…
In general, the motor and the generator have a very similar construction, so we can say that the motor represents the generator that work’s in a reverse. $$

The maximum emf of the generator is given by the equation:

$$
begin{align}
varepsilon_{max}=Ncdot{B}cdot{A}cdotomega
end{align}
$$

Where the $N$ stands for the number of loops, $A$ stands for the area of each individual loop, $B$ represents the magnitude of the magnetic field and $omega$ is the angular speed.

The emf is directly proportional to an angular speed.

$$
boxed{text{If we increase the angular speed, the emf will also increase.}}
$$

If we increase the angular speed, the emf will also increase.$$

The maximum emf of the generator is given by the equation:

$$
begin{align}
varepsilon_{max}=Ncdot{B}cdot{A}cdotomega
end{align}
$$

Where the $N$ stands for the number of loops, $A$ stands for the area of each individual loop, $B$ represents the magnitude of the magnetic field and $omega$ is the angular speed.

The emf is directly proportional to a number of loops.

$$
boxed{text{If we increase the coil loops number, the emf will also increase.}}
$$

If we increase the coil loops number, the emf will also increase.$$

The maximum emf of the generator is given by the equation:

$$
begin{align}
varepsilon_{max}=Ncdot{B}cdot{A}cdotomega
end{align}
$$

Where the $N$ stands for the number of loops, $A$ stands for the area of each individual loop, $B$ represents the magnitude of the magnetic field and $omega$ is the angular speed.

Let’s express the magnitude of the magnetic field from the first equation:

$$
begin{align*}
B&=frac{varepsilon_{max}}{Ncdot{A}cdotomega}
end{align*}
$$

If we substitute all given:

$$
begin{align*}
B&=frac{75text{ V}}{95cdot{0.0044text{ m}^2}cdot{220 frac{text{rad}}{text{s}}}}
end{align*}
$$

Now we just have to compute the value:

$$
boxed{B=0.816text{ T}}
$$

$$
B=0.816text{ T}
$$

The maximum emf of the generator is given by the equation:

$$
begin{align}
varepsilon_{max}=Ncdot{B}cdot{A}cdotomega
end{align}
$$

Where the $N$ stands for the number of loops, $A$ stands for the area of each individual loop, $B$ represents the magnitude of the magnetic field and $omega$ is the angular speed.

Let’s substitute all given:

$$
begin{align*}
varepsilon_{max}=55cdot{0.95text{ T}}cdot{0.0085text{ m}^2}cdot{310 frac{text{rad}}{text{s}}}
end{align*}
$$

Now we just have to compute the value:

$$
boxed{varepsilon_{max}=137.7text{ V}}
$$

$$
varepsilon_{max}=137.7text{ V}
$$