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What do magnets have to with electricity?
Faraday showed that a wire passing through a magnetic field will produce electricity. This is how a generator works. Many windings of wire on an armature spin in a magnetic field. This makes electricity.
How does the permeability of a coil affect mutual inductance?
Since a coil contains numerous loops, more of the conductor is affectedÊ by the magnetic field. An increase in permeability of the core results in an increase in the inductance of the coil.
What is a shunt generator?
A shunt generator is a method of generating electricity in which field winding and armature winding are connected in parallel, and in which the armature supplies both the load current and the field current.A direct current (DC) generator, not using a permanent magnet, requires a DC field current. The field may be separately excited by a source of DC, or may be connected to the armature of the generator so that the generator also provides the energy required for the field current.
What do you call the force around a magnet?
the area of magnetic force around a magnet is called the magnetic field
What does an eletromagnet do in a motor?
Provide amoving magnetic force field.
Loops of wire that turn in the magnetic field of an armature create current?
alternating
What is the function of field winding in DC generator?
The motor needs the current and magnetic flux to create motion The magnetic field is created by field winding where as armature carries the current resulting into the rotation of armature
What The distance that the pointer of a galvanometer moves depends on the amount of magnetism in the loops of the armature?
The distance that the pointer of a galvanometer moves is determined by the strength of the magnetic field present in the coils or loops of the armature. When an electric current flows through the coils, it interacts with the magnetic field produced by the coils, resulting in a deflection of the pointer. The greater the magnetism in the loops, the larger the deflection of the pointer.
What component is made of loops of wire that rotate in the magnetic field provided by the field poles and field coils?
An armature is the component that is made of loops of wire that rotate in the magnetic field provided by the field poles and field coils. This rotation induces an electromotive force and generates electrical energy in devices such as generators and alternators.
Is it true or false several loops of wire wrapped around an iron core form the armature of a motor?
True. Several loops of wire wrapped around an iron core create the armature of a motor. This configuration helps to produce a magnetic field when current flows through the wire, allowing the motor to convert electrical energy into mechanical energy for motion.
How is electricity used to move a car?
Electricity can create magnetic fields. A magnetic field will attract or repel another magnetic field. That principle is used in the manufacture of electric motors. Magnetic fields are created in both an armature and an outside winding. When the magnetic fields are opposite, the armature tries to turn so that it is in line with the outside winding. Then the magnetic field changes polarity and the armature continues in the same direction, pushing the magnetic fields away. The process continues, repeatedly and quite rapidly to make an electric motor armature turn. The armature can be connected to a drive shaft or even directly to a wheel to make the vehicle move.
What is mean by armature reaction?
Armature reaction refers to the magnetic field distortion in a DC machine due to the flow of armature current. This distortion affects the main magnetic field in the machine, altering its strength and distribution. It can lead to changes in machine performance, such as voltage regulation and efficiency.
What is armature in motors?
The armature has the stationary (not physically moving) magnetic field, which attracts the magnetic field in the rotor. Since DC does not alternate, a split ring is used to alternate the current (and resulting magnetic field), so that the rotor will spin.
What are the effect of armature reaction in DC machine and how the armature reaction is minimise?
Armature reaction is the interaction between the magnetic flux produced by armature current and that of the main magnetic field in an electric motor or generator.
Will increasing the number of loops in a solenoid cause the strength of its magnetic field to decrease?
No, increasing the number of loops in a solenoid will actually increase the strength of its magnetic field. This is because more loops increase the amount of current flowing through the coil, which in turn increases the magnetic field produced.
What is armature in DC motor?
The armature has the stationary (not physically moving) magnetic field, which attracts the magnetic field in the rotor. Since DC does not alternate, a split ring is used to alternate the current (and resulting magnetic field), so that the rotor will spin.
What 3 factors that affect the output of a generator?
1:The strenght of the main magnetic Field. Determined by the strenght of the field magnets in a permanent magnet machine, or by the number of turns of wire on the field coils and the current through the coils in a wound field machine.2: The number of armature conductors connected in series, which cut the main magnetic field. Determined by the number of turns on armature coils and weather the armature is lap or wave wound, which determines the number of armature conductors connected in series.3: The speed at which the armature conductors cut the main magnetic field. The faster the armature cuts the magnetic Field, the higher will be the value of the voltage generated in the machine
