Page 168 - Electrician 1st year - TP

TYo (Power) T«t£ 1.5.49
ªuT¦Vô[o þ AC ªuÑtßLs (AC Circuits)

£e¡s úTv ªuÑt±p úX¡e Utßm Ä¥e (lagging and leading) TYo
@úTdP¬p ªuNd§, ªu]ôt\p B¡VYtû\ A[®Pp Utßm
ÏQô§NVeLû[ YûWTPj§u êXm Jl©ÓRp (Measure power, energy for
lagging and leading power factors in single phase circuits and compare the characteristics
graphically)
úSôdLeLs: ClT«t£«u Ø¥®p ¿eLs ùT\ úYi¥V §\uLs
• úXd¡e PF (lagging PF) dÏ ªu Nd§ Utßm ªu]ôt\p B¡VYtû\ A[®Pp
• Ä¥e PF (leading PF) dÏ ªu Nd§ Utßm ªu]ôt\p B¡VYtû\ A[®Pp
• úXd¡e PF Utßm Ä¥e PF B¡VYtû\ Jl©hÓ ¡Wôl YûWRp.

úRûYVô]ûYLs (Requirements)

LÚ®Ls/NôR]eLs/CVk§WeLs
(Tools / Equipment)

• MI AmÁhPo 0 -5A/ 10A 1 • vPôl Yôhf 1
• MI úYôph ÁhPo • ªu®[dÏ TÞ 240V/ 5A - 1KW 1
0 - 300V 1 ùTôÚhLs (Materials)
• Yôh ÁhPo 250V/ 5A 1
• PF ÁhPo 250V/ 2A 1 • úNôd 40W/ 250V 2
• úY¬Vôd 0.270 / 5A 1 • GXdhúWô ûXh¥d
• AC úNôov 0- 240V/ 5A 1 ùLlTô£hPo 2.5 ƒd / 415V 2
• G]o´ ÁhPo 250V/ 5A 1 • CûQdÏm Lm©Ls
úRûYVô] A[Ü

ùNnØû\
ùNnV úYi¥V úYûX 1: úX¡e PF Es[ ªuÑt±p ªu Nd§ûV A[®Pp.

1 Fig 1þp Lôi©jÕs[T¥ ªu Ñtû\ 4 Ñ®hfûN ‘OFF’ ùNnVÜm. JÚ úNôdûL
AûUdLÜm. CûQjÕ A[ÜLû[ T§Ü ùNnVÜm.
2 ªu CûQlûT YZeÏYRtÏ Øu]o 5 Ñ®hfûN ‘OFF’ ùNnVÜm. CWiPôYÕ
CWiÓ úNôdÏL°Ûm JÚ Øû]ûV úNôdûL CûQjÕ A[ÜLû[
UhÓm CûQl©XõÚkÕ ©¬dLÜm. AhPYûQ þ1p T§Ü ùNnVÜm.
úY¬Vôd¡u AÜh×h ªu]ÝjRjûR 250
úYôp¥p ûYdLÜm.

3 Ñ®hfûN ‘ON’ ùNnVÜm. YôhÁhPo, PF
ÁhPo A[ÜLû[ AhPYûQ þ1p
ϱdLÜm.

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