Page 70 - Electrician -1st Year - TT

A§LUô] G§odÏm RuûUÙûPVÕ. A§LUô] ÏßdÏùYhÓlTWlT[Ü
BRXôp Rôu CÕ ¿iP SôhLs AÛª²V YVÚdÏ úRûYlTÓ¡\Õ.
EûZd¡\Õ.
2 CÕ GûP Ïû\Yô]Õ.
5 CRû] G°RôL Gq®R BTjÕLs Cu±
3 CRû] ùUpXõV YVoL[ôdLÜm,
CûQdLXôm. C§p GXdhúWôûXh¥d
ºhL[ôÜm G°RôL ùNnV Ø¥Ùm. B]ôp
ùNVXõXõÚkÕ RÓlTRtÏl TVuTÓ¡\Õ.
CÝ®ûN TXm (tensile strength ) CZlTRôp
6 CÕ SmTLjRuûUÙPu A§L Sôs ¿¥jÕ CRu ¡Wôv ùNdN]p H¬Vô Ïû\Ùm.
EûZd¡\Õ. úUÛm L¯ÜLû[ ®ûXdÏ
4 AÛª²V LPj§Lû[ CûQlTRtÏ
®tLXôm.
ªLÜm A§LUô] Øuù]fN¬dûL
LôlTo LPj§dÏ AÓjÕ AÛª²Vm TôÕLôl× ®§Øû\Ls úRûYlTÓ¡\Õ.
ªuLPj§L[ôLl TVuTÓ¡\Õ.
5 CRu EÚϨûX Ïû\Ü, BLúY R[oYô]
AÛª²Vj§u Ti×Ls (Characteristics of CûQl× (loose connection) ×s°L°p
aluminium) ExQm EÚYôÏYRôp ®ûW®p

1 LôlTo LPj§dÏ AÓjRlT¥VôL CÕ úNRUûPkÕ ®Ó¡\Õ.
SpX LPjÕm §\u EûPVÕ. LôlTo 6 LôlTûW ®P UXõYô] ®ûX«p
LPj§ÙPu Jl©ÓmùTôÝÕ 60.6 NRÅRm ¡ûPd¡\Õ.
áÓRp LPjÕm §\u Es[Õ. G]úY
AhPYûQ 1 LôlT¬u Ti×Lû[
JúW A[Ü LWih ùLlTô£h¥dÏ, LôlTo
AÛª²VjÕPu Jl©hÓs[ûRd
YV¬u ÏßdÏùYhÓlTWlT[ûY ®P
LôhÓ¡\Õ.
AhPYûQ 1

Y. Gi Ti×Ls LôlTo (Cu) AÛª²Vm (Al)
1 ¨\m (Colour) £Ll×Pu ©WÜu ùYsû[
(Reddish brown)
2 ªuLPjÕm §\u úUô / ÁhP¬p 56 35
(MHO/metre)
3 CûQ ªuRûPjRuûU (Resistivity) 0.01786 0.0287
o

20 C Km / ÁhPo ÏßdÏ
ùYhÓlTWlT[Ü 1 mm 2
4 EÚϨûX 1083 C 660 C
o
o
5 APoj§ (Density) in kg/cm 3 8.93 2.7
6 20 C þp ªuRûP«u ExQ¨ûX 0.00393 0.00403
o
ÏQLm (coefficient)
7 20 C þp ¿s (linear) ®¬Üd ÏQLm
o
(Coefficient) 17 x 10 -6 23 x 10 -6
8 CÝ®ûNTXm (Tensile strength in Nw/mm ) 220 70
2

CuÑúXh¥e ùTôÚhL°u Ti×Ls CuÑúXNu ªuRûP (Insulation resistance)
(Properties of insulating materials) : CWiÓ
LWih¥u KhPjûR G§olTÕ ªuRûP
Ød¡VUô] CuÑúXNu ùUhÃVpLÞdϬV
(electrical resistance) VôÏm. ùUd KmÁhPo
Ti×Ls B]Õ CuÑúXNu ùW³vhPuv (ùUdLo) A[®Óm LÚ®ûVl TVuTÓj§
Utßm ûPGXdh¬d vhùWuj (dielectric
CuÑúXNu ùW³vhPuv
strength) BÏm. AûYLs CWiÓm
A[dLlTÓ¡\Õ. CÕ ªLÜm A§LUô]
UôßThPûYLs, TX Y¯L°p
ùW³vhPu³u U§lûT CuÑúXNàdÏ
A[dLlTÓ¡\Õ.
Gq®R úNRØm HtTÓYRtÏ LôWQUôLôUp

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