WORKING PRINCIPLE OF DC MOTOR,DC GENERATOR|DAY 12|FLEMING'S LEFT-HAND RULE|BASIC ELECTRICAL ENGG

#Working principle of dc motor
#Working principle of dc generator
#Fleming's Left hand rule
#Fleming's Right hand rule
#Fleming's rule
#Generator rule
#motor ruleIn this video you will learn
Electrical machine Day 12, Working Principle of DC generator and motor, Fleming’s left hand and right hand rule, Basic Electrical Engineering
WORKING PRINCIPLE OF DC GENERATOR

A generator is a device that convert Mechanical energy into electrical energy using electromagnetic induction.
A DC generator produces direct power based on fundamental principle of Faraday's laws of electromagnetic induction.
According to this laws, Whenever a conductor is moved within a magnetic field in such a way that the conductor cuts across magnetic lines of flux, voltage is generated in the conductor.
FLEMING’S RIGHT HAND RULE (GENERATOR RULE)
It use to determine the direction of the induced emf/current of a conductor moving in a magnetic field.
The POLARITY of the voltage depends on the direction of the magnetic lines of flux and the direction of movement of the conductor.
Fleming right hand rule (FRR) used to determine nature of emf or direction of current because rest two direction of motion of conductor in generator (Input Mechanical energy in generator) and direction of magnetic field (due to stator Field) are known.

1. ELECTRICAL MACHINE BASIC ELECTRICAL ENGINEERING WORKING PRINCIPLE WORKING PRINCIPLE OF DC MACHINE & FLEMING’S RULE DAY 12

2. ELECTRICAL MACHINE Syllabus Introduction of Machine Classification of Machine Construction of DC, Induction & Synchronous machine Working Principle of DC Machine Induction machine Synchronous machine EMF Equation of all machine ……… DAY 9 DAY 10 DAY 11

3. WORKING PRINCIPLE OF DC GENERATOR A generator is a device that convert Mechanical energy into electrical energy using electromagnetic induction. A DC generator produces direct power based on fundamental principle of Faraday's laws of electromagnetic induction. According to this laws, Whenever a conductor is moved within a magnetic field in such a way that the conductor cuts across magnetic lines of flux, voltage is generated in the conductor. According to faraday law of induced emf in a conductor is always alternating current then how we get dc output from dc generator?

4. WORKING PRINCIPLE OF DC MACHINE Elementary generator Without Commutator DC generator Without Commutator

5. DC GENERATOR WITHOUT COMMUTATOR

6. WORKING OF ELEMENTARY GENERATOR WITHOUT COMMUTATOR

7. FLEMING’S RIGHT HAND RULE (GENERATOR RULE) It use to determine the direction of the induced emf/current of a conductor moving in a magnetic field . The POLARITY of the voltage depends on the direction of the magnetic lines of flux and the direction of movement of the conductor. M o t i o n M agnetic field C urrent Y OTHER UTE Fleming right hand rule (FRR) used to determine nature of emf or direction of current because rest two direction of m otion of conductor in generator (Input Mechanical energy in generator ) and direction of magnetic field (due to stator Field) are known . Thumb First/Fore finger Middle finger Trick 1:-M Y M OTHER C UTE TRICK 2 :-" FBI", standing for  F orce (or otherwise motion),  B  the symbol for the magnetic field(Flux density) I  the symbol for current. The subsequent letters correspond to subsequent fingers, counting from the top. Thumb -> F; First finger -> B; Second finger -> I.

8. WORKING PRINCIPLE OF DC MOTOR A machine that converts DC Electrical Energy into Mechanical Energy(Motion) is known as a DC motor . The basic working principle of a DC motor is : " whenever a current carrying conductor is placed in a magnetic field , it experiences a mechanical force". Which is the cause of DC motor. The direction of this force is given by Fleming's left-hand rule and its magnitude is given by F = BIL NEWTON DC MOTOR F = Force B= Magnetic flux density I= Current in conductor L=Length of conductor in meter.

9. WORKING PRINCIPLE OF DC MACHINE FLEMING’S LEFT HAND RULE (GENERATOR RULE) F O R C E M AGNETIC FIELD C URRENT Thumb First/Fore finger Middle finger ATHER O THER HILDEN It is found that whenever a current carrying conductor is placed inside a magnetic field , a force acts on the conductor, in a direction perpendicular to both the directions of the current and the magnetic field . Trick 1 :-F ATHER M OTHER C HILD Fleming left hand rule (FLHR) used to determine direction of force in motor because direction of magnetic field (by stator) and direction of current in conductor is well known.

10. TRICK TO REMEMBER FLEMING’S RULE Where is Fleming’s Right hand rule ( FRHR ) applied ? Motor or Generator Where is Fleming’s left hand rule ( FLHR ) applied ? Motor or Generator Fleming left-hand rule is used to find the direction of motion or force experienced by a conductor placed in a magnetic field. Fleming right-hand rule is used to find the direction of electric current generated in a conductor when the conductor is moved inside a magnetic field

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