Cooling Towers Exam Prep NAPTA Ch.21

Introduction to Process Technology (NAPTA)

Chapter 21 Cooling Towers

1) What is the most commonly used cooling tower in industrial process applications?

A) Air conditioner

B) Open circuit cooling tower

C) Closed circuit cooling tower

D) Daddy circuit cooling tower

Page Ref: 288

Objective: 21.1 Describe the purpose and types of cooling towers in the process industries

Blooms Level: Understand

2) What cooling towers use temperature differences inside and outside the stack to facilitate air movement?

A) Induced draft tower

B) Forced draft tower

C) Closed circuit cooling tower

D) Natural draft tower

Page Ref: 288

Objective: 21.1 Describe the purpose and types of cooling towers in the process industries

Blooms Level: Understand

3) What cooling towers use a heat exchange coil through which the working fluid passes and over which water is sprayed?

A) Induced draft tower

B) Forced draft tower

C) Closed circuit cooling tower

D) Natural draft tower

Page Ref: 288

Objective: 21.1 Describe the purpose and types of cooling towers in the process industries

Blooms Level: Understand

4) What allows air intake in a cooling tower?

A) Fan

B) Louvers

C) Suction screens

D) Fill

Page Ref: 289

Objective: 21.2 Identify the primary parts and support systems of a typical open cooling tower

Blooms Level: Understand

5) What is the material that breaks water into smaller droplets as it falls inside the cooling tower, creating greater surface exposure area?

A) Fill

B) Fan

C) Drift eliminator

D) Makeup water

Page Ref: 290

Objective: 21.2 Identify the primary parts and support systems of a typical open cooling tower

Blooms Level: Understand

6) Where is makeup water taken from?

A) Lakes

B) Rivers

C) Waterways

D) All of the above

Page Ref: 290

Objective: 21.2 Identify the primary parts and support systems of a typical open cooling tower

Blooms Level: Understand

7) What is cooling tower operation is based on?

A) Radiation

B) Convection

C) Conduction

D) Evaporation

Page Ref: 290

Objective: 21.3 Describe the principles of operation and applications of a cooling tower

Blooms Level: Understand

8) Why are chemicals added to cooling water?

A) To avoid algae growth

B) To make it safe to drink

C) To improve the smell

D) To make it safe to touch

Page Ref: 291

Objective: 21.3 Describe the principles of operation and applications of a cooling tower

Blooms Level: Understand

9) What factor has an impact on cooling tower performance?

A) Ambient air temperature

B) Relative humidity of ambient air

C) Cooling tower design

D) All of the above

Page Ref: 291-292

Objective: 21.3 Describe the principles of operation and applications of a cooling tower

Blooms Level: Understand

10) What improper operation can lead to exposure to harmful microorganisms?

A) Cooling tower fan shut-off during cold months

B) Excessive fan speed

C) Formation of ice-fog when operating in cold climates

D) Improper /incorrect treatment of cooling water chemically

Page Ref: 292-293

Objective: 21.4 Discuss the hazards associated with the improper operation of a cooling tower

Blooms Level: Understand

11) What improper operation can lead to algae growth or sludge buildup that can foul process equipment?

A) Excess blowdown

B) Circulating cooling water through a heat exchanger with ruptured tubes

C) Formation of ice-fog when operating in cold climates

D) Improper /incorrect treatment of cooling water chemically

Page Ref: 292-293

Objective: 21.4 Discuss the hazards associated with the improper operation of a cooling tower

Blooms Level: Understand

12) Which of the following can cause off-spec products to be produced?

A) Improper valve operation

B) Improper operation of the chlorine system

C) Improper /incorrect treatment of cooling water chemically

D) All of the above

Page Ref: 292-293

Objective: 21.4 Discuss the hazards associated with the improper operation of a cooling tower

Blooms Level: Understand

13) What should process technicians do when monitoring and maintaining cooling towers?

A) Look for leaks

B) Observe filter screens for plugging

C) Check for proper water distribution on top of the tower

D) All of the above

Page Ref: 293

Objective: 21.5 Describe the monitoring and maintenance activities associated with a cooling tower

Blooms Level: Understand

14) Which of the following is the symbol for an induced draft cross flow tower?

A)

B)

C)

D)

Page Ref: 293

Objective: 21.5 Describe the monitoring and maintenance activities associated with a cooling tower

Blooms Level: Understand

15) Which of the following is the symbol for a natural draft counter-flow cooling tower?

A)

B)

C)

D)

Page Ref: 293

Objective: 21.5 Describe the monitoring and maintenance activities associated with a cooling tower

Blooms Level: Understand