WATER

WATER

Professional Development

25 Qs

quiz-placeholder

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WATER

WATER

Assessment

Quiz

Professional Development

Professional Development

Practice Problem

Medium

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25 questions

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1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Sifat korosif sebuah coolant terhadap material besi atau aluminium dapat diantisipasi dengan menjaga nilai :

Corosivitas
Conductivitas
Resistensi
PH

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Material apa yang digunakan sebagai bahan campuran dalam pembuatan air pendingin (water coolant)

Glycol
Natrium
Sodium
Penetrant

3.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Peristiwa pecahnya gelembung udara pada dinding liner disebut

Pitting
Cavitasi
Scuffing
Aerasi

4.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Angka pH coolant yang diijinkan dalam aplikasinya pada mesin diesel adalah

0 – 7
7 – 14
7,5 – 13,5
8,5 – 10,5

5.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Zat kimia yang berfungsi membentuk lapisan film pada dinding liner pada cooling system adalah :

additive
dispersant
inhibitor
coolant

6.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Tingkatan kekerasan air yang baik digunakan untuk cooling system adalah yang memiliki angka kekerasan

0 – 4 Ppm
4 – 8 Ppm
8 – 12 Ppm
12 – 18 Ppm

7.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Standard tingkat kekerasan air mengunakan standard kecuali

French hardness
British hardness
German hardness
America hardness

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