Page 61 - Electrician -1st Year - TT

TYo (Power) T«t£ 1.2.17 - 19 dLô] ùRôPo× LÚj§Vp
GXdh¬μVu (Electrician) þ ªu Lm©Ls, CûQl×Ls, úNôpP¬e þ
UG úL©sLs (Wires - Joints - Soldering - UG cables)

ªuNôWj§u A¥lTûPj RjÕYeLs (Fundamental of electricity - conductors
- insulators - wire size measurement - crimping)

úSôdLeLs: ClTôPj§u Ø¥®p ¿eLs ùT\ úYi¥V A±Ü §\uLs
• AÔ Utßm ªuNôWjûR YûWVßjRp
• AÔ®u AûUlûT ®Y¬jRp
• A¥lTûP TReLs Utßm ªuNôWjûR YûWVßjRp
• ªu LPj§Ls, ªu LPjRôl ùTôÚhLs, ªu Lm©Ls þ Scan the QR Code to view
A[ÜLû[ A[jRp Øû\Ls þ B¡VYtû\d áßRp. the video for this exercise

A±ØLm (Introduction) : ªuNôWm GuTÕ êXdáßLû[Ùm úY§«Vp çVôL £ß £ß
Cuû\V LôXj§tÏ ªLÜm TVàs[ TϧL[ôLl ©¬dL Ø¥Ùm. JÚ êXdá±u
Bt\Xõp ØRuûUVôÏm. CkR SÅ] LôX ªLf£±V TϧúV AÔ (atom) Guß
EXLj§tÏ ªuNôWm ªLÜm Cu±VûUVôR AûZdLlTÓ¡\Õ. CkR AÔ®p GXdhWôu
úRûYlTPd á¥VRôLÜm, Utßm (electrons), ×úWôhPôu (protons), ¨ëhWôu
CVk§WeLs, NôR]eLÞdÏ TVuTÓjR (neutrons) B¡V 3 ÕÔdÏLs (particles) Es[].
úRûYVô] Bt\XôLÜm Es[Õ. ×úWôhPôuLs Utßm ¨ëhWôuLs
AÔ®u ûUVlTϧ, ¨Ùd¡°Vv (nucleus)þp
ªuNôWm TônkÕd ùLôi¥ÚlTûR
Es[]. GXdhWôu (electrons) ¨Ùd¡°Vv-I
ªuú]ôhPm (current) Gu¡ú\ôm. AúR
Ñt±Ùs[ YhPlTôûR«p (orbits) Ñt±
úSWj§p TôVôUXõÚdÏm ªuNôWm ¨ûX
YÚ¡u\].
ªuNôWm (static electricity) G]lTÓm.
AÔ®u AûUl× (Atomic structure)
¨ûXVô] ªuNôWj§tϬV ERôWQeLs
(Examples of static electricity) ¨ëd¡°Vv (The Nucleus) : ¨ëd¡°Vv
GuTÕ AÔ®u ûUVlTϧVôÏm.
• LôoTh ®¬j§ÚdÏm Aû\«Ûs[ LR®u
Fig 1 p LôhPlThÓs[T¥ C§p
ûL©¥«XõÚkÕ ªu A§of£ HtTÓRp
×úWôhPôuLÞm, ¨ëhWôuLÞm,
• ºl©p Lô¡Rm DodLlTÓ¡\Õ. APe¡Ùs[].

TÚlùTôÚ°u AûUl× (Structure of mat-
ter): ªuú]ôhPjûR A±kÕ ùLôs[
TÚlùTôÚ°u (matter) AûUlûT SuÏ
׬kÕ ùLôs[ úYiÓm. ªuNôWm GuTÕ
TÚlùTôÚ°u êXlùTôÚ[ô¡V AÔ
(atom) GXdhWôuLs, ×úWôhPôuLs
B¡VYt±u áhPûUlûTl ùTôÚjÕ
AûUÙm. Aû]jÕ TÚlùTôÚhLÞm
CdáhPûUl©p EÚYô]ûYúV. G]úY
CûY “ªu]ôt\p” G]lTÓm.
AÔ(Atom): CPjûR AûPjÕd ùLôsYÕm,
×úWôhPôuLs (Protons) : ×úWôhPôuLs
¨û\ÙûPVÕUô] Aû]jÕm TÚlùTôÚs
úSoªuú]t\m (positive electrical charge)
(matter) G]lTÓm. Aû]jÕ úUhPoLÞm
êXdáßLs (molecules) Guß AûZdLlTÓm. ùTt\ûY. (Fig 1) CÕ GXdhWô²u ¨û\ûV
CÕ LiÔdÏl ×XlTPôR £±V ÕLsL[ôp ®P 1840 UPeÏ ¨û\ÙûPVRôÏm. CÕ
B]Õ. JÚ ùTôÚÞdLô] ÏQeLû[d ¨Ùd°V³u ¨WkRWUô] TôLUôÏm.
CûYLs ªuú]ôhPj§úXô ApXÕ
ùLôiÓ ùTôÚ°àûPV ªLf£±V ÕLú[
êXdáß G]lTÓ¡\Õ. JqùYôÚ ªuUôt\j§úXô ùNVpTÓY§pûX.

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