ESM444 Solutions

ESM444 Tma Solutions

1. _____ that require high temperatures, like diesel and gas engines, there is increased tendency to deposit scale

—>> engines

houses

cars

planes

2. Tendency for increase in corrosion is reduced by decreasing the solubility of _____ at higher temperatures

phosphates

carbon

nitogen

—>> oxygen

3. A _____ is a closed vessel in which water under pressure is transformed into steam by the application of heat.

heater

Outsets

insets

—>> boiler

4. _____ recirculation system is the most popular method of controlled cooling of water treatment.

distance

open

—>> Closed

followed

5. Recirculation water systems are of _____ types

7

8

—>> 3

5

6. _____ is the major problem in boiler water system.

—>> Corrosion

abbrasion

pollution

diffussion

7. In _____ recirculation water system, water is circulated in a closed cycle and subjected to alternate cooling and heating without air contact.

—>> closed

land

plane

Chain

8. Dissolved oxygen, dissolved carbondioxide and dissolved ammonia are the main causes of corrosion in the _____

reflectors tapes

steal tape

—>> boiler

Cloth Tape

9. Products of water tube boiler pass around the _____ containing water.

cups

glass

—>> tubes

bucket

10. _____ variations also cause problems in boiler water system

Ox

pN

UN

—>> pH

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