How does AC current change direction?

How does AC current change direction?
by

1 Answer

Answer :

This  is  because  the  angle  at  which  the   magnetic  fields  cuts  across  a  winding  changes  its  poles  thus  current  has  to  change  dirention  .
by

Related questions

What is the direction of an AC current?

Description : What is the direction of an AC current?

Last Answer : The magnitude and direction of alternating current is changes with respect to time. So for half cycle it is positive and for next half cycle it is negative.

The direction of rotation of an inverter fed 3-phase ac motor is reversed by

Description : The direction of rotation of an inverter fed 3-phase ac motor is reversed by (A) a mechanical reversing switch (B) reversing the input dc link voltage (C) operating the inverter as a rectifier (D) changing the sequence of switching

Last Answer : The direction of rotation of an inverter fed 3-phase ac motor is reversed by changing the sequence of switching

What happens when you reverse the direction of the current in an electromagnet?

Description : What happens when you reverse the direction of the current in an electromagnet?

Last Answer : When  you  reverse  current  direction  in  an  electromagnet,  the magnetic  poles  will  also  change.

What is the direction of the induced current?

Description : What is the direction of the induced current?

What is the direction of flow of current?

Description : What is the direction of flow of current?

Last Answer : Current  flows  from  anode  to  cathode(opposite  direction  to  flow of  electrons)

What is the direction of the conventional current flow?

Description : What is the direction of the conventional current flow?

Last Answer : The conventional current flow in opposite direction of flow of electrons. The electrons flow from negative terminal of battery to positive terminal of battery. And conventional current flow from positive terminal of battery to negative terminal of battery.

What is the direction of flow of electric current in an electric circuit?

Description : What is the direction of flow of electric current in an electric circuit?

Last Answer : It  flows  from  anode  to  cathode  (direction  of   holes  flow)

why current flows in opposite direction of electrons ?

Description : why current flows in opposite direction of electrons?

Last Answer : Hi team, the current flow is nothing but flow of electrons But the conventional direction I'd opposite to actual current flow . ..

Alternating current (AC)

Description : Alternating current (AC)

Last Answer : AC stands for Alternating Current meaning voltage or current that changes polarity or direction respectively over time. An Alternating Current (AC) is an electric current whose magnitude ... energy are known as alternators and are simpler construction than DC electromechanical generators.

Do cell phones use AC or DC current?

Description : Do cell phones use AC or DC current?

Last Answer : DC of course.

Is current from a battery AC or DC?

Description : Is current from a battery AC or DC?

Last Answer : The current from the battery is DC

Why do we use AC current in our homes?

Description : Why do we use AC current in our homes?

Last Answer : We used it for cooking rice,  For washing clothes and for lights in the house.

In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of?

Description : In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of?

Last Answer : In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of less than 15A.

Describe the difference between direct and alternating current.

Description : Describe the difference between direct and alternating current.

Last Answer : Direct current is the flow of electricity or charge in one direction..  Alternative current is the flow of charge that doesn't flow in one direction. 

The r.m.s. value of a sinusoidal A.C. current is equal to its value at an angle of______degrees.

Description : The r.m.s. value of a sinusoidal A.C. current is equal to its value at an angle of______degrees.

Last Answer : 45

In a single-phase induction motor, the operating direction is determined by the ________

Description : In a single-phase induction motor, the operating direction is determined by the ________ A) Rotor B) Stator C) Starting circuit D) None of these

Last Answer : In a single-phase induction motor, the operating direction is determined by the Starting circuit

What is the direction of the induced electric field?

Description : What is the direction of the induced electric field?

Last Answer : It  is  in  opposite  direction   to  the  one  that   produced  it.

What is the direction of the electric field?

Description : What is the direction of the electric field?

Last Answer : Electric   field    is  at   right angle   widh  flow  of  current  (right  hand   rule).

What is the direction of the flow of electrons?

Description : What is the direction of the flow of electrons?

Last Answer : Electrons  flow    cathode   to   anode  or  in   an  oposite  direction  of   convection  current  flow  or  holes.

can a DIAC conduct in both direction?

Last Answer : Yes DIAC can conduct in both direction.

The direction of rotation of universal motor can be reversed the by reversing the flow of current through?

Last Answer : The direction of rotation of universal motor can be reversed the by reversing the flow of current through either armature winding or field winding.

In a synchronous machine, if the field flux axis ahead of the armature field axis in the direction of rotation,

Description : In a synchronous machine, if the field flux axis ahead of the armature field axis in the direction of rotation, the machine is operating as  (1) synchronous motor (2) synchronous generator (3) asynchronous motor (4) asynchronous generator

Last Answer : In a synchronous machine, if the field flux axis ahead of the armature field axis in the direction of rotation, the machine is operating as synchronous generator 

Two non-collinear parallel equal forces acting in opposite direction?

Description : Two non-collinear parallel equal forces acting in opposite direction?

Last Answer : Two non-collinear parallel equal forces acting in opposite direction constitute a couple.

The direction of rotation of a D.C. series motor can be changed by?

Last Answer : The direction of rotation of a D.C. series motor can be changed by interchanging field terminals.

In case of a shaded pole motor the direction of rotation of the motor is?

Last Answer : In case of a shaded pole motor the direction of rotation of the motor is from main pole to shaded pole.

Direction of rotation of a split phase motor can be reversed by reversing the connection of?

Last Answer : Direction of rotation of a split phase motor can be reversed by reversing the connection of either running winding or starting winding.

The direction of rotation of an hysteresis motor is determined by?

Last Answer : The direction of rotation of an hysteresis motor is determined by position of shaded pole with respect to main pole.

In repulsion motor direction of rotation of motor?

Last Answer : In repulsion motor direction of rotation of motor is the same as that of brush shift.

How can we reverse the direction of rotation of synchronous motor?

Description : How can we reverse the direction of rotation of synchronous motor?

Last Answer : By reversing supply phase sequence we can reverse the direction of rotation of synchronous motor.

What is the direction of flow when charging a capacitor?

Description : What is the direction of flow when charging a capacitor?

Will the Dow Jones Iindustrial Average rise or fall on Moday the 2nd of August.

Description : Will the Dow Jones Iindustrial Average rise or fall on Moday the 2nd of August.

Last Answer : I can, with the utmost confidence, assert with 50% certainty that it will go up on 8/2/10.

How do you give your personal answer on this site?

Description : How do you give your personal answer on this site?

Last Answer : I suggest starting a blog on blogspot. You might get a friend to help you with it. I’m guessing by the state of your writing-abilities you are not great with computers, but I’ll bet that you are an awesome artist! Good luck!

What is the advantage of AC over DC electrical transmission?

Description : What is the advantage of AC over DC electrical transmission?

Why are DC motors used in trains and not AC motors ?

Description : Why are DC motors used in trains and not AC motors ?

Last Answer : The reason is torque. torque is inversely proportional to speed..i.e when th knowe train comes to rest position to motion.. initial speed is zero..so it requires high starting torque for ... current will flow through field and armature coils then maximum torque is available at the intial condition.

Why is AC considered more efficient than DC?

Description : Why is AC considered more efficient than DC?

Last Answer : Ac is more efficient than dc because it is easy to maintain and change the voltage of ac for transmission and distribution purpose. Plant cost of ac transmission is much lower compared to dc transmission. When fault occurs it is easy to interrupt ac supply.

Which is more dangerous AC or DC and why ?

Description : Which is more dangerous AC or DC and why ?

Last Answer : Dc is more dangerous than Ac because in Ac the voltage  will varies but in dc the constant voltage 

Why is AC better for long distance power transmission than DC ?

Description : Why is AC better for long distance power transmission than DC ?

Last Answer : ac is more economical to transmit for long distances . wires can be made smaller by step up transformer .. since major cost are wires to transmit .. then at the end of distance step down transformer is used for commercial use.

Why can't we store AC in batteries instead of DC ?

Description : Why can't we store AC in batteries instead of DC ?

Last Answer : Because the direction of the current changes in AC electricity, you cannot directly store the power. Placing a capacitor in an AC circuit has no effect on the alternating flow of the electricity. The only ... is indirectly, by storing DC and then using a power inverter to convert the DC to AC.

What is the conversion between. AC to AC ? DC to DC? AC to DC? DC to AC ?

Description : What is the conversion between. AC to AC ? DC to DC? AC to DC? DC to AC ?

Last Answer : 1.ac to ac is regulation 2.dc to dc is chopper 3.ac to dc is rectifier 4.dc to ac is inverter

AC generator

Description : AC generator

Last Answer : A.C power can be generated as a single phase or as a balanced poly-phase system. However, it was found that 3-phase power generation at 50 Hz will be economical and most suitable. Present day three phase generators ... has uniform air gap (figure 2.1(b)) and used when speed is high.