
PERFORM POLARITY CABLE TEST
Authored by MARLINI KPM-Guru
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9 questions
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1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Fungsi transformer adalah untuk..
Meningkatkan voltan sahaja
Menurunkan arus sahaja
Menurunkan dan meningkatkan voltan
Menurunkan dan meningkatkan voltan dan arus
Answer explanation
Apabila pengubah menurunkan voltan (step down), arus akan meningkat.
Jika voltan dinaikkan (step up), arus akan menurun.
2.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Nyatakan belitan transformer di A dan B
A: PRIMARY
B: SECONDARY
A: SECONDARY
B: PRIMARY
3.
FILL IN THE BLANK QUESTION
20 sec • 2 pts
Hukum Faraday menyatakan arus dan ______ dapat dihasilkan apabila fluks magnet berubah-ubah.
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Berikut adalah maklumat yang terdapat pada plat nama transformer, KECUALI:
Nama pengilang
Vektor
Kecekapan transformer
Jenis cecair penebatan
berat transformer
5.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Berikut merupakan kebaikan transformer 3 fasa, KECUALI:
Operasi keupayaan adalah tinggi
Harganya lebih murah
Strukturnya lebih berat membolehkannya lebih stabil
Pembahagian kuasa adalah seimbang
Answer explanation
Keadaan berat yang kurang dan penempatan kawasan yang kecil.
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Jika transformer satu fasa yang berada di dalam bank tiga fasa didapati rosak, ianya boleh dibuka dari sambungannya dan yang lain boleh digunakan sehingga ianya diganti.
BETUL
SALAH
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sebuah pengubah unggul mempunyai 150 belitan utama dan 75 belitan sekunder. Jika bekalan 240 volt, 50 Hz dibekalkan ke bahagian uatama, kirakan voltan sekunder.
120 V
220 V
160 V
140 V
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