CHAPTER 13 UTILITY SYSTEMS TEST
1. Coagulation __________ the negative charges of suspended solids.:
a. enhances
b. dissipates
c. neutralizes
d. accumulates
2. Flocculation is a term used to describe the ________ ________ of coagulated particles.
a. neutralizing effect
b. polar kinetics
c. polluted concentration
d. bridging together
3. Common coagulants include all of the following except: Circle all!
a. aluminum
b. iron salts
c. ferric sulfate
d. alum
e. sulfur
4. It takes _____ Btu to change one pound of water to steam.
i. one
ii. 970
iii. 212
iv. 100
5. Heat stored in this form is often associated with:
a. the latent heat of condensation
b. the latent heat of vaporization.
c. sensible heat
d. radiant heat
5. A deaerator is a device used to:
a. remove air from water
b. remove hydrocarbons from condensate
c. enrich oxygen content in boiler feed water
d. store treated boiler feed water
7. The typical pressure of the SHP steam is:
a. 180 to 200 psig
b. 400 to 800 psig
c. 1000 to 1200 psig
d. 2000 to 2200 psig
8. It takes ______ Btu to raise the temperature of one pound of water one degree
Fahrenheit.
a. one
b. 970
c. 212
d. 100
9. What is the term given for the total energy due to both the pressure and temperature of a
fluid such as steam
a. Enthalpy
b. Absolute pressure
c. British Thermal Unit
d. Specific Heat Capacity
9. A measure of the ability of a substance to absorb heat.
a. Convection
b. BTU
c. Enthalpy
d. Specific Heat Capacity
10. Flare systems are used to:
a. safely burn excess hydrocarbons
b. remove excess hydrocarbons from a variety of plant processes.
c. burn hazardous waste
d. a & b
11. List the 4 major steps in a refrigeration system.
13. Draw a steam system with high, medium and low pressure steam, a condensate return
header, a deaerator, and boiler feed water system.
14. List the basic components of an electrical system.
15. Sketch a simple flare system.
16. Aluminum and iron have _______ positive charges that _______ the negative charges
of the suspended solids.
a. two, balance
b. three, counter
c. four, enhances
d. five, overwhelm
17. Chemical precipitation uses a chemical to react with dissolved minerals in feed water to
form a _________ ________ that drops harmlessly out of solution.
a. gaseous precipitate
b. liquid precipitate
c. solid precipitate
d. inert material
18. Corrosion prevention is characterized by all of the following except:
a. maintaining pH levels in boiler feed water
b. removing dissolved oxygen from water
c. using chemical treatments
d. following blow-down procedures.
e. adding oxygen and chemical inhibitors to feed water
19. Corrosion is a complex _____________ reaction that can attack a large area or a small
pinpoint area.
a. magnetic
b. nuclear
c. electrochemical
d. dissolution
20. The purpose of a conservation vent is to:
a. conserve release of hydrocarbons
b. regulate pressure in a tank during operation.
c. keep rain out
d. a & c
21. Why do boilers and cooling towers need to be blown-down periodically?
a. high parts per million of suspended solids
b. high pH levels
c. improve water quality
d. all the above
22. Poor water quality will produce poor-quality steam.
a. True
b. False
23. The primary causes of boiler water carryover include all of the following except:
a. foaming
b. aquaglobejection
c. load changes
d. steam contamination
e. electrochemical reaction
24. When minerals are dissolved in water they form:
a. calcium
b. ions
c. hydrogen
d. acids
25. Ionic resins come in two types:
a. acidic and caustic
b. hot and cold
c. granular and liquid
d. anion and cation
26. Blowdown is a term used to describe:
a. removal of water from boilers and cooling towers
b. removal of 5%-10% of total water capacity
c. high electric conductivity of the water in boiler or cooling tower
d. all the above
27. Anion resins react with:
a. negatively charged ions
b. water
c. positively charged ions
d. magnesium chloride
28. A cooling water system is typically designed to have a temperature range of:
a. 70ºF supply and 130ºF return temperature
b. 100ºF supply and 140ºF return temperature
c. 90ºF supply and 120ºF return temperature
d. 80ºF supply and 160ºF return temperature
29. The recirculating cooling water concentration ratio on a cooling tower is typically
designed for a minimum of _______ cycles and is controlled by blowdown.
a. five
b. seven
c. nine
d. over ten
30. The power received from electric supply companies is generally at voltage levels of:
a. 100 to 160 kV
b. 13.8 kV
c. 4160 V
d. 120V-240V
31. Voltmeters are connected in ________ with wires in an electric circuit.
a. series
b. combination
c. parallel
d. compliance
32. As boiler feed water temperature increases, impurities precipitate (fall out) and adhere to
the hot metal surfaces of the boiler, forming ___________.
a. scale
b. ions
c. acid
d. hydrogen
33. Please identify the following components:
33-1
33-2
33-3
33-4
33-5
33-6
33-7
33-8
33-9
33-10
33-11
33-12
33-13
33-14
33-15
33-16
33-17
Answer Key CHAPTER 13 Utility Systems