1)Wyznaczanie przekładni transformatora:

I U₁=16,25 [V], U₂=2,225 [V]

II U₁=16,50 [V], U₂=2,259 [V]

III U₁=17,23 [V], U₂=2,360 [V]

IV U₁=17,90 [V], U₂=2,451 [V]

V U₁=18,78 [V], U₂=2,572 [V]

VI U₁=19,25 [V], U₂=2,637 [V]

VII U₁=20,17 [V], U₂=2,762 [V]

Przekładnia transformatora:

k=U₂/U₁

k₁=2,225V/16,25V=0,1369

k₂=2,259V/16,50V=0,1369

k₃=2,360V/17,23V=0,1370

k₄=2,451V/17,90V=0,1369

k₅=2,572V/18,78V=0,1370

k₆=2,637V/19,25V=0,1370

k₇=2,762V/20,17V=0,1369

wartość średnia k

k_śr=k₁+k₂+k₃+k₄+k₅+k₆+k₇/7

k_śr=0,1369+0,1369+0,1370+0,1369+0,1370+0,1370+0,1369/7=0,1369

2)Wyznaczanie sprawności transformatora:

P=U*I [W] ƞ=U₂*I₂/U₁*I₁= P₂/P₁

I U₁=16,37V , I₁=13,93mA

P₁=16,37V *13,93mA=228,034mW

U₂=2,095V, I₂=86,9mA

P₂=2,095V *86,9mA=182,056mW

Ƞ=182,056/228,034=0,80=80%

II U₁=16,54V, I₁=10,91mA

P₁=16,54V*10,91mA=180,451mW

U₂=2,155 V, I₂=63,5mA

P₂=2,155V*63,5mA=136,842mW

Ƞ=136,842/180,451=0,76= 76%

III U₁=16,61V, I₁=8,52mA

P₁=16,61V*8,52mA=141,517mW

U₂=2,194V, I₂=44,7mA

P₂=2,194V*44,7mA=98,072mW

Ƞ=98,072/141,517=0,69=69%

IV U₁=16,68V, I₁=7,13mA

P₁=16,68V*7,13mA=118,928mW

U₂=2,228V, I₂=33,39mA

P₂=2,228V*33,39mA=74,393mW

Ƞ=74,393/118,928=0,63=63%

V U₁=16,74V, I₁=6,22mA

P₁= 16,74V*6,22mA=104,123mW

U₂=2,250V, I₂=25,38mA

P₂=2,250V*25,38mA=57,105mW

Ƞ=57,105/104,123=0,55=55%

VI U₁=16,80V, I₁=5,60mA

P₁=16,80V*5,60mA=94,08mW

U₂= 2,264V, I₂=19,63mA

P₂=2,264V*19,63mA=44,442mW

Ƞ=44,442/94,08=0,47=47%

VII U₁=16,84V, I₁=5,01mA

P₁=16,84V*5,01mA=84,36mW

U₂=2,280V, I₂=13,75mA

P₂=2,280V*13,75mA=31,35mW

Ƞ=31,35/84,36=0,37=37%

VIII U₁=16,90V, I₁=4,65mA

P₁=16,90V*4,65mA=78,585mW

U₂=2,294V, I₂=9,80mA

P₂=2,294V*9,80mA=22,481mW

Ƞ=22,481/78,585=0,29=29%

IX U₁=16,92V, I₁=4,40mA

P₁=16,92V*4,40mA=74,448mW

U₂=2,301V, I₂=6,92mA

P₂=2,301V*6,92mA=15,923mW

Ƞ=15,923/74,448=0,21=21%

X U₁=16,94V, I₁=4,18mA

P₁=16,94V*4,18mA=70,809mW

U₂=2,310V, I₂=4,20mA

P₂=2,310V*4,20mA=9,702mW

Ƞ=9,702/70,809=0,14=14%

XI U₁=16,97V, I₁=4,03mA

P₁=16,97V*4,03mA=68,389mW

U₂=2,316V, I₂=2,18mA

P₂=2,316V*2,18mA=5,049mW

Ƞ=5,049/68,389=0,07=7%

XII U₁=16,99V, I₁=3,96mA

P­­₁=16,99V*3,96mA=67,280mW

U₂=2,321V, I₂=1,11mA

P₂=2,321V*1,11mA=2,576mW

Ƞ=2,576/67,280=0,4=4%