Explain functions of the commutator, Physics

Assignment Help:

Functions of the commutator:

A commutator is a device, which under certain conditions changes ac into dc and vice versa.

The commutator is a form of rotating switch placed between the armature and external circuit and so arranged that it reverses the links to the external circuits at the instant of every reversal of the current in the armature coil. Thus it changes induced alternating currents in armature coils into direct currents in the external load circuits.

Related Discussions:- Explain functions of the commutator

MAGNETIC MOMENT, Magnetic susceptibility of copper is 0.5 Calculate the mag...

Magnetic susceptibility of copper is 0.5 Calculate the magnetic moment per unit volume of copper, when it is subjected to a magnetic field of G. If the material is in the crystalli

Curie point, It describes the temperature above which the material loses it...

It describes the temperature above which the material loses its spontaneous polarization and piezoelectric characteristics.

Electronic level allow the hydrogen atom to absorb a photon, which electron...

which electronic level would allow the hydrogen atom to absorb a photon but not to emit a photon

Write down the maxwells electromagnetic equation, Write down the Maxwell's ...

Write down the Maxwell's electromagnetic equation in differential form in a medium, in the presence of currents and charges. Identify and state the laws of electromagnetism with wh

Projectile, derive an expression for time of flight of horizontal projectil...

derive an expression for time of flight of horizontal projectile

Numerical 4.8, two bodies of masses 200 g and 300 g are tied to a string wh...

two bodies of masses 200 g and 300 g are tied to a string which is passed over a pully.if pully has no weight and friction,then find the accerlation of the bodies and tension in th

Derive an expression for the torque acting on a loop, Derive an expression ...

Derive an expression for the torque acting on a loop of N turns, area A, carrying current i, when held in a uniform magnetic field. With the help of ciruit, show how a moving coil

Relativity, Length contraction

Length contraction

A capacitor is able to serve as which of the following, Questions: A ca...

Questions: A capacitor is able to serve as which of the following? Answer: By classification a capacitor is a charge storage device. In storing charge a capacitor as we

Determine the phase angle between voltage and current, A coil havingof a re...

A coil havingof a resistance of 100 and an inductance of 200mH. If an alternating voltage, v, givenby v=200sin500t volts is applied across the coil, measure (a) The circuit

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages