All categories

2 years ago

Which type of motor uses a brush and commutator to operate?

Physics

2 answers:

Andrew [12]2 years ago

6 0

Answer:

DC motor

Explanation:

DC motor is used to convert the electrical energy into the mechanical energy.

DC motor uses a brush and commutator to operate. The function of the commutator is to reverse the direction of electric current at every point. It also connects the power supply to the rotating coils with the help of brushes.

Brushes are used to carry current to the armature of the coil. Due to this, a magnetic field is created so that the motor runs. There are two brushes. One brush is connected to the switch and another brush is connected to the commutator.

Hence, a DC motor uses a brush and commutator to operate.

MissTica2 years ago

3 0

DC motors generally use commutators. Also some single phase AC motors use

You might be interested in

What is the wavelength in nm of a light whose first order bright band forms a

scoundrel [369]

The wavelength of the first order bright band light light is 714 nm .

Explanation:

We have to find the wavelength of the first order brightness of a light. Here we are using Huygen's principle of light.

The formula is

nλ =d sinθ

where, n is the order of maximum

λ is the wavelength of light

d is the distance between the lines on diffraction grating.

θ is the angle.

For the given equation n is 1 because the problem states that the light forms 1st order bright band

λ is unknown.

d = $\frac{1}{700,000}$ or 0.0000014 m

sin (30) = 0.5

so,

1(λ) = (0.0000014)(0.5)

= 0.0000000714

= 714 nm

Thus, The wavelength of the first order bright band light light is 714 nm .

3 0

3 years ago

A Gaussian surface in the form of a hemisphere of radius R = 3.04 cm lies in a uniform electric field of magnitude E = 1.64 N/C.

Likurg_2 [28]

Answer:

Part a)

$\phi = -4.76 \times 10^{-3} Nm^2/C$

Part b)

$\phi_{curved} = 4.76 \times 10^{-3} Nm^2/C$

Explanation:

Part a)

Electric flux entering into the base

so it is given as

$\phi = E.A$

$\phi = - EA$

$\phi = -(1.64)(\pi r^2)$

$\phi = -(1.64)(\pi\times 0.0304^2)$

$\phi = -4.76 \times 10^{-3} Nm^2/C$

Part b)

Now since we know that there is no enclosed charge in the hemisphere

so net flux must be zero

$\phi_{curved} + \phi_{flat} = 0$

$\phi_{curved} - 4.76 \times 10^{-3} = 0$

$\phi_{curved} = 4.76 \times 10^{-3} Nm^2/C$

7 0

2 years ago

You are wearing earbuds or headphones to listen to your music but your family members can hear it as well. They tell you that it

san4es73 [151]

I would turn my music down some

4 0

3 years ago

When Earth runs into the dust trail left behind by a comet that is orbiting the Sun, Earth experiences a _____.

tekilochka [14]

The answer to this question is: C) Meteor Shower

7 0

3 years ago

Read 2 more answers

The thermal transfer of energy by electromagnetic waves through the vacuum of space is called

Olenka [21]

Answer: Radiation

Explanation:

There are three ways in which the thermal transfer occurs:

1. By Conduction, when the transmission is by the direct contact.

2. By Convection, heat transfer in fluids (like water or the air, for example).

3. By Radiation, by the electromagnetic waves (they can travel through any medium and in vacumm)

So, in the outter space is vacuum, this means the energy cannot be transmitted by convection, nor conduction. It must be transmitted by electromagnetic waves that are able to travel with or without a medium, and this is called radiation.

4 0

2 years ago

Read 2 more answers