EARTHING AUR NEUTRAL MEIN KIYA FARQ HOTA HAY

Earthing aur Neutral mein farq kiya hota hay. Ye sawal aksar interviews wagera mein pocha jata hay aur aksar loogo ko nahi pta hota in mein kiya farq hota hay.
Earthing aur Neutral mein farq.
Neutral ko ham circuit complete karnay kay liye istimal kartay hein jis se phase return jata hay jab kay earthing ham protection kay liye istimal kartey hein. System ko protect karnay kay liye.

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TWO PHASE SYSTEM KIYA HOTA HAY?

Two phase system jisay aksar two phase motor system bhi kaha jata hay. Ye aksar electrical motor mein istimal hota hay, Jesay kay two phase servo motor. Servo motor mein do windings hotein hein starting winding aur running winding. In dono Winding ko alag alag phase chahiye hota hay aur 90 degree ka difference bhi hota hay.

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ELECTRICAL SWITCHBOARD, ELECTRICAL GEAR AUR ELECTRICAL PANEL ME FARK AUR DETAILS.

Electrical Switch gear ya Electrical panel ya Electrical Switchboard in teeno ka matlab aik hi hota hay. Electrical switchboard electrical ki controlling system hota hay jis se plant ki controlling ki jati hay. Electrical distribution board chotay swich gear hotay hain jab kay swich gear panel baray hotay hein. char kisam kay switch gear hote hein. (there are 4 types of switch gear).

1. Low Voltage Switchboard
2. Medium Voltage Switchboard
3. High Voltage Switchboard
4. Super high Voltage Switchboard

• Low voltage switch gear me DBs wagera aati hein. Distribution boards hotey hein jo choti machines wagera ki controlling kay liye hotay hain.
• Medium Voltage Switchboard mein Wo switch gear hotay hein jo zyada tar Companies kay Power plant me istimaal hotay hein Companies ki controlling kay liye.
• High and Super high Voltage Switchboard Power plants and grid stations mein use hotay hein jaha high voltage hota hay.

VOLTAGE RATINGS:

Switchboard ki alag alag voltage ratings hoti hein, Jo char categories me divide hein.

• 1 Volt se lekar 1000 volts tak Low voltage me hota hay.
• 1001 volts se  35000 volts tak medium voltage me hote hein.
• 35000 volts se 220000 volts tak high Voltage Switchboard me hote hein.
• 220000 volts se ziada voltage phir Super High Voltage Switchboard me hote hein.

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THREE PHASE STANDARD MOTOR CONNECTIONS

Three phases me star delta/ induction/ Motor ky connections konsay hein aur kesey hein, Ye connections Standard hein.

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SAWAL KA JAWAB DO. ELECTRICAL PRACTICE QUESTION

Question Ka Jawab Do, Question For Practice.
Ye Question Voltage aur Frequency ky haawaly se hay.
Sawal ye hay ky: Low Frequency ky Disadvantages kiya hein. ?

Apky answer se visitors seekhengay.

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THREE PHASE CONNECTIONS ME STAR DELTA KYU USE KARTY HEIN.

Three phase system me ham motor connections me Star Delta use karte hein, Induction motor me ye use kyu karte hein? Ye bhhht interesting question ha. So me yaha kuch points btata hun jo is chees ka sabab ha.

1. Motor 3 se 4 guna starting current kam kar leti ha apny current se, aur current ky kam honay se Voltage automatically kam ho jaega, To losses bhi kam hoga.
   
2. Star Delta Controlling circuit, Voltage reduce hoga to Current b reduce hoga to induction motor ky jalny ky imkaan bhi kam hongay.
   
3. Aur addition mein, Motor ki Starting torque ziada hoti ha to motor ki winding kam chance hota ha jalny ya damage honay me.

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GENERATORS PARALLEL ME KU OPERATE HOTY HEIN

Generators Parallel me operate hote hein, wo kyu? Wo is liye q k parallel me operate is liye hote hein because,

1. Parallel me unki maintenance thek se kar sakty hein aur repairing wagera bhi.
2. Parallel me plant ki capacity b behter aur achi hogi.
3. parallel me connect karne se hamein continuity aur realibility service ki hamein milegi aur bager interruption ky.
4. Hamein efficient operation milega har generator ka.

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ELECTRICAL GENERATOR ME BASIC COMPONENTS KIYA HOTY HEIN?

Sab se pehly Generator ko define kar du apni language me ky Generator aik aesi machine hoti ha jo mechanical energy ko electrical energy me convert karti ha. Ab bat karte hein k generator me basic main components kon kon se hoty hein.
Generator  me basic components ye hote hein jo darj zail hein.

1. Conductor aur coil jis me magnet banta ha.
2. Flux.
3. Relative motion. conductor aur flux ky darmiyan motion.

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DC MOTOR KI DIRECTION KO KESE REVERSE KAR SAKTY HEIN.

DC motor ki direction ko reverse kese karsakty hein? ye b aik important topic ha jo students DC motor parh rhe hein specailly un k liye ok to sab se pehly ham bta dein k dc motor me do tarha ki windings hoti hein.

1. Field winding.
2. Armature winding.

Field winding se ham main field produced karwate hein, balky ye kehna thek rahy ga k field winding se main field produced hoti ha aur armature winding se armature field produced hoti ha.

Ab agar ham field winding se guzarnay walay current ko change/reverse karty hein (current ki direction ko change karte hein) to is se ham easily motor ki direction ko reverse kar sakty hein.

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ALTERNATOR ME ROTATING ARMATURE SYSTEM HOTA HA YA STATIONARY ARMATURE SYSTEM

Generally, Alternators me armature stationary hota ha aur field rotatory hota ha,Lekin ye fix nahi ha k aesa hi ho, q k small alternators me rotatory armature b hota ha, aur field winding stationary. Lekin large alternators me field winding stationary hoti ha jb ky armature winding stationary.

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ALTERNATOR KI GENERAL SYSTEM REQUIREMENTS KIYA HOTI HEIN?

EMF ki generation ky liye two basic systems.

1. Magnetic field system, jo magnetic field system produce kare.
2. Armature system, Jis me Conductors hotey hein aur usi me EMF produce hota ha.

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