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What else can I help you with?
What is the principle of motor action?
Motor runs by the principle of Michael Faraday's Electromagnetic Induction. It is defined as "when a current-carrying conductor is located in an external magnetic field perpendicular to the conductor, the conductor experiences a force perpendicular to itself and to the external magnetic field". The direction of rotation is determined by the Right-hand Rule and is "if the right thumb points in the direction of the current in the conductor and the fingers of the right hand point in the direction of the external magnetic field, then the force on the conductor is directed outward from the palm of the right hand".
What is the shape of the magnetic field that surrounds a current carrying wire?
The shape of the magnetic field created by current flow in a wire will be circular around the wire. The magnetic lines of force "surround" or "wrap around" the wire according to the left hand rule. Grab the wire with your left hand with your thumb extended and pointing in the direction the electrons are flowing. The fingers will be wrapping around the wire in the direction of the magnetic field. Look at the wire "head on" and picture the electrons "coming at you" as you look. The magnetic lines of force will circle around the wire in a clockwise direction. Grab the wire with your left hand as you look "into" that wire and look at your fingers. Clockwise. The magnetic lines of force "circle" the conductor in closed rings. temptress_skkk: In my textbook, it says the "right-hand rule" instead of the "left-hand rule" but it's basically the same thing, only the current is going the opposite way with your right hand instead of your left hand being in its place. it is the right hand rule of thumb not the left hand. and the magnetics line will fade as the square of the distance.
What is flaming left hand rule?
Stretch the thumb the first finger and the central finger of the left hand so that they are mutually perpendicular to each other. If the first four finger points in the direction of magnetic field the central finger points in the direction of current then the thumb points in the direction of motion of the conductor is known as fleming's left hand rule. by Prosenjit.
Why direction of rotation is not reversed when both field and armature terminals are reversed?
The direction of the force that drives the machine is determined by the relative directions of the field and the armature current. By reversing the direction of both field and the armature current, the direction of the resulting force stays the same; you have to reverse the direction of one or the other; not both! Prove it for yourself, by applying Fleming's Left-Hand Rule (for conventional current flow); reverse the direction of both your first finger (field) and your second finger (armature current), and you thumb (direction of motion) will end up pointing in the same direction!
What is the phase current of a three phase 2.2kw 415v motor connected in star?
The line current would be the same if the motor were connected in delta. The current can be based on the rule of thumb which says 7 amps must be allowed for a 1-HP single-phase motor on 240 v. A 2.2 kW motor is three times as powerful, and on a three-phase supply of the same voltage (240/415) it would draw 7 amps.
How rigt hand thumb rule is used in determining the direction of magnetic field around a conductor carrying current?
Curl the fingers of your right hand into the palm and extend the thumb. The thumb indicates the direction of the current, and the direction of the fingers indicates the direction of the magnetic field.
What is the right hand thumb rule used for in relation to magnetic fields?
The right-hand thumb rule is used to determine the direction of magnetic field lines around a current-carrying conductor. By pointing your right thumb in the direction of the current flow, your fingers curl in the direction of the magnetic field lines.
How can one determine the direction of the magnetic field generated by a current?
To determine the direction of the magnetic field generated by a current, you can use the right-hand rule. Point your right thumb in the direction of the current flow, and your fingers will curl in the direction of the magnetic field.
How can one determine the direction of current in a magnetic field?
To determine the direction of current in a magnetic field, you can use the right-hand rule. Point your right thumb in the direction of the current and curl your fingers in the direction of the magnetic field. Your fingers will then point in the direction of the force acting on the current.
What is magnetic field produced by a current flowing through a wire?
A current flowing through a wire produces a magnetic field around the wire. The direction of the magnetic field is determined by the right-hand rule, where if you point your thumb in the direction of the current, your fingers will curl in the direction of the magnetic field lines. The strength of the magnetic field is directly proportional to the current flowing through the wire.
How can one determine the direction of force in a magnetic field?
To determine the direction of force in a magnetic field, use the right-hand rule. Point your thumb in the direction of the current, and your fingers will curl in the direction of the magnetic field. The force will act perpendicular to both the current and the magnetic field.
How is the left-hand rule related to current and magnetic field?
It is related to the flow of electrons in a conductor through aseparate magnetic field. If you point your index finger straight place your thumb up and place your middle finger at a 90 degree angle to the other two (unless you are really double jointed there is only one way to do it.). The direction of current and your wire is the middle finger the direction of magnetic plane pointing north is your index finger and the direction of force is your thumb. There is also the right hand rule. If you look at your right hand with your thumb up and fingers curved, If you held a piece of wire in your hand with the current traveling along the direction of your thumb the magnetic field would rotate in the direction of your fingers.
What does a magnetic field look like around a current carrying a wire?
Around a current-carrying wire, the magnetic field forms concentric circles perpendicular to the wire. The strength of the magnetic field decreases as you move away from the wire. The magnetic field direction follows the right-hand rule where your thumb points in the direction of the current and your fingers show the direction of the magnetic field.
How do you reverse the direction of a magnetic field?
You can reverse the direction of a magnetic field by changing the direction of the electric current flowing through a conductor. This is known as the right-hand rule - if you pass your right-hand thumb in the direction of the current flow, your fingers will curl in the direction of the magnetic field. By reversing the direction of the current, you can reverse the direction of the magnetic field.
What is the magnetic field around a wire when the current running in the wire is in reverse direction?
The magnetic field around a wire is determined by the direction of the current flow. If the current running in the wire is in the reverse direction, the magnetic field around the wire will also be reversed. The direction of the magnetic field is determined by the right-hand rule, where if you wrap your right hand around the wire with your thumb pointing in the direction of the current, your fingers will point in the direction of the magnetic field.
How do you decide the 'Direction of Rotation' of a magnetic field?
There is a convenient rule called the "right hand grip rule":If you grip your right hand around the electric conductor with your thumb pointing in the direction the current is flowing, the magnetic field rotates in the direction your remaining fingers are pointing.See related Wikipedia link for an illustration.
How to find the direction of a magnetic field?
To find the direction of a magnetic field, you can use the right-hand rule. Point your right thumb in the direction of the current flow, and curl your fingers. Your fingers will then point in the direction of the magnetic field.
