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For any appliance or lamp to operate at its rated power, it must be subjected to its rated voltage. Every branch of a parallel circuit is subjected to the same (supply) voltage. This is the main reason; the secondary reason is that any break in a series circuit will de-energise all the appliances connected to it!
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What is multiplex winding?
a wave winding in which the number of parallel circuits is a multiple of two, other than four, whatever the number of poles
What is difference between main winding and auxiliary winding?
In the case of a capacitor-start/run single-phase induction motor, the main field is provided by the main (running) winding, and the capacitive branch is the auxiliary winding. In the case of a capacitor-start motor, the main winding is the running winding and the auxiliary winding is the starting winding.
Are devices of home connected in series or in parallel?
Home devices are connected in parallel and not in series.
What are the differences of Long shunt vs short shunt generator?
In long shunt the shunt field winding is in parallel to both generator and series field. In short shunt the shunt field is in parallel to generator only.
In motor winding what is the difference between a lap winding and a wave winding?
When electricians and electrical engineers/repairmen are called upon to assess troubles in generators and motors, they often rewind different types of these machines. There are two families of armature (closed-circuit) windings: lap winding and wave winding, described by the commutator pitch used for winding. In mechanical terms, armature windings consist of coils connected to a commutator in Read more....direct-current machines; or coils are connected together in alternating-current machines to form groups or series.Lap winding, also called parallel or multiple winding, is the process of winding elements or coils lapping back when wound on armature cores. Lap circuits are connected in parallel between brushes. The front and back pitches are odd with opposite signs. Winding pitch equals the algebraic sum of the front and back pitches. The end of a coil is connected to the commutator and the start of the next coil under the same two poles. Single-lap windings always have the same number of current paths as field poles while double-lap windings have twice as many current paths as field poles. Triple-lap windings have three times the number of current paths as field poles.The zig-zag or wavy path of winding through slots of armatures defines single (two-circuit) wave windings and multiplex (series-parallel) windings. Half of the armature coils is connected in series and the other half is connected in parallel between brushes, no matter the number of poles. Winding pitch is equal to the sum of the front and back pitches, which both must be odd with the same sign. The end of a coil is joined to the armature and the beginning of another under the next two poles. A single-wave winding has two current paths between brush sets. The double-wave winding has four current paths between brush sets; and the triple-wave winding has six current paths.Wave winding is used mostly in small and medium sized machines (500-600 volts) for keeping the number of coils as small as possible. Applications requiring high voltages at low currents use wave windings while lap windings are used for lower voltage, higher current applications. Wave windings, for a given number of poles and armature conductors, give more emf (electric and magnetic fields) than lap windings.Examples of suitable symmetrical armature windings for DC-machines with different poles are: for two-pole machines, two-circuit lap winding is preferred over wave winding; for four-pole machines, two-circuit wave winding or four-circuit lap winding is suggested. Six-pole machines should use two-circuit wave or six-circuit lap winding since four-circuit wave winding is asymmetrical.
How capacitor is connected in a table fan?
The Capacitor with running winding is connected in parallel with main winding.
What is multiplex winding?
a wave winding in which the number of parallel circuits is a multiple of two, other than four, whatever the number of poles
What is shunt current and a armature current?
The terms 'shunt' and 'armature' apply to a particular type of d.c. motor, in which the field windings are connected in parallel with the armature windings. 'Shunt' is an archaic term for 'parallel', so the term 'shunt', in this context, means that the field winding is connected in parallel with the armature winding. The terms 'shunt current' and 'armature current', then describe the currents flowing in the shunt winding and armature winding, respectively.
Dc machine having wave winding is wounded as lap winding what will be the effect on emf generated?
Emf generated=(flux*no.of parallel poles*no.of conductors*speed)/(60*no.of parallel paths) therefore, for lap wound.... no.of parallel path=no.of poles and wave wound ..... no of parallel path=2
What type of dc motor has its field winding in parallel with its armature windings?
Shunt Motor
How many parallel paths in a wave winding of a 4 pole dc motor?
2
What is DC shunt motor?
A shunt DC motor connects the armature and field windings in parallel or shunt with a common D.C. power source. This type of motor has good speed regulation even as the load varies, but does not have the starting torque of a series DC motor
What is difference between main winding and auxiliary winding?
In the case of a capacitor-start/run single-phase induction motor, the main field is provided by the main (running) winding, and the capacitive branch is the auxiliary winding. In the case of a capacitor-start motor, the main winding is the running winding and the auxiliary winding is the starting winding.
what is Lap winding and wave winding?
The ends of lap windings are connected to adjacent segments of the machine's commutator, whereas wave windingsare connected between segments that are some distance apart. This results in lap windings having 2p parallel paths, where p represents the number of pole pairs; whereas a wave winding has just two parallel paths.
Are devices of home connected in series or in parallel?
Home devices are connected in parallel and not in series.
Which home appliances are connected in parallel and which in series?
All home appliances are connected in parallel.
Why is the shunt field resistance greater than the series field resistance?
In case of series winding total line current is flow through it.line current is very very high.so,to minimize the drop the winding made as low turns and low gauge.hence the resistance is low.in case of shunt winding high resistance winding is used otherwise short circuit the parallel winding.for that winding is made as heavy turns and heavy gauge.
