
ELEKTRIK DAN KEMAGNETAN
Quiz
•
Science
•
3rd Grade
•
Practice Problem
•
Hard
SHANTHINI A/P DORAIRAJOO KPM-Guru
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Satu transformer injak naik mempunyai 30 lilitan pada gegelung primer. Berapakah bilangan lilitan pada gegelung sekundernya?
10
20
30
40
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Fius digunakan dalam palam 3-pin. Apakah fungsi fius?
Menjimatkan penggunaan tenaga elektrik
Menjadikan peralatan elektrik berfungsi dengan lebih baik
Menyerap arus yang berlebihan sebelum mengalir ke peralatan elektrik
Memutuskan litar apabila arus yang berlebihan mengalir melaluinya
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Satu peralatan elektrik dilabelkan 240 V, 800 W. Apakah nilai fius yang paling sesuai digunakan pada peralatan elektrik itu?
1 A
3 A
5 A
10 A
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Berapakah arus ulang-alik yang dihasilkan oleh penjana di stesen jana kuasa?
415 kV
275 kV
33 kV
11 kV
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sebuah mesin basuh ditandakan 240 V. Hitung kuasa jika arus elektrik 2.5 A mengalir melalui mesin basuh itu.
2500 W
1800 W
800 W
600 W
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apakah yang diwakili oleh bilangan bintang yang ditampal pada pelbagai jenis peralatan elektrik?
Kualiti
Nilai harga
Kecekapan tenaga
Jangka masa penggunaan
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sebuah ketuhar elektrik dengan kuasa 1 000 W digunakan untuk membakar sebiji kek selama 40 minit. Hitung kos tenaga elektrik yang digunakan jika kadar bagi setiap unit ialah 15 sen.
Tenaga elektrik yang digunakan (kWj) = Kuasa (kW) x Masa (j)
5 sen
10 sen
15 sen
20 sen
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