
Week 4 Air Conditioning System
Authored by Abd Rasman Bin Abd Rashid
Instructional Technology
University
Used 4+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
_________ merupakan bahan yang mengalir sebagai cecair di dalam sistem penyaman udara.
Minyak enjin (engine oil)
Minyak hidraulik
Elektrolit (electrolyte)
Bahan pendingin (refrigerant)
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
R12 tidak lagi digunakan sebagai refrigerant kerana ia mengandungi _________ yang boleh menipiskan lapisan ozon bumi.
neon
freon
chlorofluorocarbon (CFC)
hidrogen
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Refrigerant R134a mendidih pada suhu ______ darjah celcius.
-26.9
16.4
0
100
4.
MULTIPLE SELECT QUESTION
45 sec • 5 pts
Bahan pendingin dalam bentuk gas boleh ditukar menjadi bentuk cecair dengan cara menambahkan tekanan tanpa mengubah suhu.
menambahkan tekanan tanpa mengubah suhu
mengurangkan suhu tanpa mengubah tekanan.
menurunkan tekanan tanpa mengubah suhu.
menambah suhu tanpa mengubah tekanan.
5.
MULTIPLE SELECT QUESTION
45 sec • 5 pts
Manakah antara berikut merupakan ciri-ciri refrigerant?
Tidak beracun dan tidak berbau
Mempunyai titik didih dan kondensasi yang rendah
Mempunyai susunan kimia yang stabil
Tidak menyebabkan hakisan terhadap bahan logam yang dipakai pada sistem pendingin.
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Apabila menukarkan refrigerant kenderaan dari R12 kepada R134a, perkara-perkara berikut perlu ditukar KECUALI _______.
Minyak pelincir
o-ring / seal
pemampat (compressor)
injap pengembangan (expansion valve)
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Apabila sistem dimatikan, refrigerant di dalam sistem penyaman udara adalah dalam bentuk _______ dan tekanan adalah sama pada keseluruhan sistem.
ais
cecair
wap
minyak
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