No. 15 --------- Diket : Generator Arus, i = 100 Ampere Tegangan, V = 110 Volt
Daya hilang, P hilang = 1,65 kWatt = 1650 watt
Tanya : efisiensi generator, η = __?
Jawab :
Step 1 --------- Hitung dulu daya input generator, P in = __? Gunakan rumus : P in = V.i P in = 110 . 100 P in = 11000 watt
Step 2 --------- Hitung daya yang terpakai, P out = __? Gunakan rumus : P in = P out + P hilang 11000 = P out + 1650 P out = 11000 - 1650 P out = 9350 watt
Step 3 --------- efisiensi generator, η = __? Gunakan rumus : η = [P out / P in] x 100% η = [9350 / 11000] x 100% η = [ 0,85 ] x 100% η = 85%
Jawaban : D
No. 16 ---------- Diket : Luas penampang kumparan, A = 100 cm² = 100 x 10⁻⁴ m² Hamnatan, R = 4 ohm Jumlah lilitan, N = 400 lilitan Medan magnet, B = 10⁻⁴. Sin 2000.t kecepatan sudut, ω = 2000 rad/s Medan magnet maksimum, B max = 10⁻⁴ Tesla
Tanya : Arus induksi maksimum, i max = __?
Jawab : step 1 -------- hitung dulu GGL induksi maksimum, V max = __? ε max = N . B max . A . ω ε max = [400].[10⁻⁴].[100 x 10⁻⁴].[2000] ε max = 0,8 Volt
Step 2 --------- i max = ε max / R i max = 0,8 / 4 i max = 0,2 Ampere i max = 200 mA
Verified answer
No. 15---------
Diket :
Generator
Arus, i = 100 Ampere
Tegangan, V = 110 Volt
Daya hilang, P hilang = 1,65 kWatt = 1650 watt
Tanya :
efisiensi generator, η = __?
Jawab :
Step 1
---------
Hitung dulu daya input generator, P in = __?
Gunakan rumus :
P in = V.i
P in = 110 . 100
P in = 11000 watt
Step 2
---------
Hitung daya yang terpakai, P out = __?
Gunakan rumus :
P in = P out + P hilang
11000 = P out + 1650
P out = 11000 - 1650
P out = 9350 watt
Step 3
---------
efisiensi generator, η = __?
Gunakan rumus :
η = [P out / P in] x 100%
η = [9350 / 11000] x 100%
η = [ 0,85 ] x 100%
η = 85%
Jawaban : D
No. 16
----------
Diket :
Luas penampang kumparan, A = 100 cm² = 100 x 10⁻⁴ m²
Hamnatan, R = 4 ohm
Jumlah lilitan, N = 400 lilitan
Medan magnet, B = 10⁻⁴. Sin 2000.t
kecepatan sudut, ω = 2000 rad/s
Medan magnet maksimum, B max = 10⁻⁴ Tesla
Tanya :
Arus induksi maksimum, i max = __?
Jawab :
step 1
--------
hitung dulu GGL induksi maksimum, V max = __?
ε max = N . B max . A . ω
ε max = [400].[10⁻⁴].[100 x 10⁻⁴].[2000]
ε max = 0,8 Volt
Step 2
---------
i max = ε max / R
i max = 0,8 / 4
i max = 0,2 Ampere
i max = 200 mA
Jawaban : E
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