Page 69 - Electrician -1st Year - TT

B]Õ, ªuNôW U¦, úUôhPôoLs, úXNo L§oLs B¡VûYÙm ªuú]ôhPm
@úTuLs, ªu A[ÜLû[ A[®Óm ùNÛjRlTÓmùTôÝÕ HtTÓm
LÚ®Ls (electric instruments) úTôu\ûYL°p ®û[ÜL[ôÏm.
TVuTÓjRlTÓ¡\Õ.
6 ªu A§of£ ®û[Ü (Shock effect) : U²R
4 YôÙ AV² ¨Lr®u ®û[Ü (Gas ioniza- EPXõp ªuú]ôhPm ùNpÛm ùTôÝÕ,
tion effect) : YôÙ ¨WlTlThÓ, BTjRô] ªuA§of£ ApXÕ UWQm
êPlThÓs[ LiQô¥ ÏZô«às HtTÓm A[ÜdÏ áP A§of£ HtTPd
GXdhWôuLs ùNÛjRlTÓmùTôÝÕ LôWQUôL AûU¡\Õ. CkR
A§p AV² ¨LrÜ (ionization) HtThÓ ªuú]ôhPjûR ϱl©hP U§l×dÏ
J°dL§oLû[ (light rays) Eªr¡\Õ. CRu LhÓlTÓj§]ôp AkR ®û[ûY U]¨ûX
TVuTôÓLs @lú[ôW^uh hëlLs, úSôVô°LÞdÏ £¡fûNV°lTRtLôL
ùUoϬ úYlTo úXmlv, úNô¥Vm úYlTo êû[dÏ £±R[®p A§of£ (light shocks)
úXmlv, ¨Vôu úXml ØRXõV]YôÏm. ùLôÓlTRtÏm TVuTÓ¡\Õ.
5 £\l× L§¬VdL ®û[Ü (Special rays
effect) : £\l× L§oL[ô] X- L§oLs Utßm

ªuLPj§Ls Utßm ARàûPV JlÀÓLs (Conducting materials and their
comparison)

úSôdLeLs: ClTôPj§u Ø¥®p ¿eLs ùT\ úYi¥V A±Ü §\uLs
• LPj§Ls (conductors) Utßm CuÑúXhPoLs (insulators) B¡VûYLÞd¡ûP«p
Es[ úYßTôÓLû[ ®[dÏRp
• LPj§«u ªuNôWl Ti×Lû[d áßRp
• LôlTo Utßm AÛª²Vd LPj§L°u Ti×Lû[d áßRp
• CuÑúXhPoL°u (insulators) YûLLs Utßm ARu Ti×Lû[d áßRp
• SWG ûV TVuTÓj§ JVoL°u A[ÜLû[ A[dÏm Øû\Lû[ ®[dÏRp
• AÜhûNÓ ûUdúWô ÁhPûW TVuTÓj§ JVoL°u A[ÜLû[ A[dÏm Øû\Lû[
®[dÏRp.
LPj§Ls Utßm CuÑúXhPoLs (Con- ªuLPj§Ls TVuTÓjRlTÓ¡\Õ. £pYo,
ductors and insulators) : A§LUô] ªu]àdLs LôlTûW®P £\kR LPj§VôL Es[úTôÕm,
(free electrons) ùTtßs[ ùTôÚhLs Utßm ARu A§L ®ûX«u LôWQUôL ùTôÕYô]
AÕ ªuú]ôhPjûR (current) LPjÕm úYûXLÞdÏl TVuTÓjÕY§pûX.
RuûUÙûPVRôL CÚkRôp ARu ùTVo ªu úYûXLÞdÏl TVuTÓjRlTÓm LôlTo
ªu LPj§L[ôÏm. (conductors). B]Õ ªLÜm ÑjRUô] LôlT¬p (99.9%)
GÓjÕdLôhÓ : ùYs° (silver), RôªWm ùNnVlTÓ¡\Õ.
(copper), AÛª²Vm Utßm TX EúXôLeLs LôlT¬u Ti×Ls (Characteristics of copper)
ùTôÚhL°p ªLdÏû\Yô] ªu]àdLs 1 £pYÚdÏ AÓjRôL C§p ªLÜm
(free electrons) UhÓm CÚkÕ, AûYLs A§LUô] LPjÕm §\u Es[Õ.
ªuú]ôhPjûR (current) AYtßdÏs 2 CÕ ªLÜm A§LUô] LWih ùPu£h¥
AàU§dLôR RuûUÙûPVRôL CÚkRôp ùLôiÓs[Õ. (current density) JÚ AXÏ
AûY CuÑúXhPoLs (insulators) G]lTÓm. TWlT[®p Ut\ EúXôLeLû[ ®P
A§LUôL Es[Õ.
GÓjÕdLôhÓ : UWm, CWlTo, ©®£.
úTôo£Xõu, ûUdLô, EXokR Lô¡Rm, @ûTTo 3 CRû] ùUpXõV YVoL[ôL G°RôL
LiQô¥. ¿hPÜm, RLÓL[ôL (sheets) UôtßYRtÏm
Ut\ EúXôLeLû[®P G°RôL ùNnV
LôlTo Utßm AÛª²Vd LPj§Ls
Ø¥Ùm.
(Copper and aluminium) : ªuNôW úYûXLÞdÏ
ùTÚmTôÛm LôlTo Utßm AÛª²V 4 CÕ Y°UiPXj§p HtTÓm
A¬l×jRuûU (atmospheric corrosion)dÏ

TYo : GXdh¬μVu (NSQF - Revised 2022) R.T. Ex.No. 1.2.17 -19 49