2.3 Hyperbolic Cooling towers
1 Which of the following is the simplest method of cooling the condenser water?- (A) Spray cooling pond
- (B) Cooling tower
- (C) Indirect air cooling
- (D) Hyperbolic cooling tower
2 Open cooling system is also called as ____________
- (A) Parallel system
- (B) Once through system
- (C) Air based system.
- (D) Non-reversible system
3 What type of cooling system is used in the large power plants?
- (A) Cooling ponds
- (B) Natural flow system
- (C) Cooling towers.
- (D) Single deck system
4 Wet cooling towers (or open circuit cooling towers) operate on the principle of……………
- (A) Condensation.
- (B) Evaporative cooling
- (C) Both of the above
- (D) None of the above
5 How does outside air enter into the wet cooling system?
- (A) Air vents
- (B) Louvers.
- (C) Tuyeres
- (D) Vacuum
6 How is water circulated throughout the dry cooling tower system?
- (A) Finned tubes.
- (B) Metal pipes
- (C) Porous tubes.
- (D) Swirling tubes
7 Why is exhaust steam coming out of turbine is admitted to a steam header?
- (A) To increase the pressure.
- (B) To decrease the velocity
- (C) To decrease the pressure drop.
- (D) To control the pollution
8 How is air produced in mechanical draught cooling tower?
- (A) Air Tuyeres.
- (B) Propeller fans
- (C) Air blowers.
- (D) Louvre
9 Hyperbolic cooling towers generally used in the
- (A) Steel industry
- (B) Fertilizer industry
- (C) Alumina industry
- (D) Power industry
10 Design of hyperbolic cooling tower standard for all cooling tower
- (A) Mechanical draft
- (B) Natural draft
- (C) Both a & b
- (D) Neither a & b
11 Beams of hyperbolic cooling towers are made up of
- (A) Tungsten
- (B) Iron
- (C) Stainless steel
- (D) Brass
12 Natural draft in hyperbolic cooling towers reduces —— of fans.
- (A) Damage
- (B) Efficiency
- (C) Cost
- (D) Speed
13 Hyperbolic design allows for use of ——- without sacrificing structural integrity.
- (A) Minimum material
- (B) Maximum material
- (C) High quality material
- (D) Low quality material
14 Following is not the advantage of hyperbolic design
- (A) Less maintenance cost
- (B) Less initial cost
- (C) Less noise
- (D) All of the above
15 Following is advantage of hyperbolic design
- (A) Less initial cost
- (B) Less noise
- (C) Less vibration
- (D) All above
16 Hyperbolic cooling towers used in
- (A) Coal-fired power plant
- (B) Nuclear plants
- (C) Thermal power plant
- (D) All of these
17 Natural draft in hyperbolic cooling tower is used for production of
- (A) Fertilizer
- (B) Steel
- (C) Chemical
- (D) Electrical energy
18 When vapour is cooled at constant total system volume, the _______ changes.
- (A) Volume
- (B) PRESSURE
- (C) Temperature
- (D) None of the mentioned
19 Approximately about________ of cooling in cooling tower is through the sensible cooling
- (A) 5%
- (B) 80%
- (C) 20%
- (D) 40%
20 Condensation starts at ________ point.
- (A) Dew
- (B) Bubble
- (C) Triple
- (D) none of the mentioned
21 In which type of cooling system are nozzle arranged on different elevation?
- (A) Single deck system
- (B) Double deck system
- (C) Natural flow system
- (D) Direct flow system
22 The exhaust steam coming out of turbine is admitted to a steam header to
- (A) Increase the pressure
- (B) decrease the pressure
- (C) decrease the pressure drop
- (D) control the pollution
23 Wet cooling towers operate on the principle of……………
- (A) Condensation
- (B) Evaporative Cooling
- (C) Both of the above
- (D) None of the above
24 The open cooling is also called as?
- (A) Parallel system
- (B) Once through system
- (C) Air based system
- (D) Nonreversible system
25 Which one of the following the maximum effect on cooling tower performance
- (A) Fill media
- (B) Drift
- (C) Lourvers
- (D) Casing
26 How many number of spray nozzle does each module on spray pond cooling system contain?
- (A) 1
- (B) 2
- (C) 3
- (D) 4
27 Which of the following is the simplest method of cooling the condenser water?
- (A) Spray cooling pond
- (B) Cooling tower
- (C) Indirect air cooling
- (D) Hyperbolic air cooling
28 In which type of cooling pond system are nozzles arranged on same elevation?
- (A) Single deck system
- (B) Double deck system
- (C) Natural flow system
- (D) Direct flow system
29 What are used in the direct flow system to transfer the pond batch uniting at intake?
- (A) Separators
- (B) Filters
- (C) Baffle walls
- (D) Porous pipes
30 What type of cooling system is used in the large power plants?
- (A) Cooling ponds
- (B) Natural flow system
- (C) Cooling towers
- (D) Single deck system
31 How is water circulated throughout the dry cooling tower system?
- (A) Finned tubes
- (B) Metal pipes
- (C) Porous tubes
- (D) Swifting tubes
32 Which of the following gives out highest pollutants to the atmosphere?
- (A) cooling tower
- (B) water tower
- (C) steam tower
- (D) fire tower
33 What comes out from the cooling tower of a nuclear power plant?
- (A) smoke
- (B) cool air
- (C) hot air
- (D) none of theses
34 What are built to cool down the cooling water in a power plant?
- (A) Towers
- (B) Cooling pond
- (C) Air filter
- (D) none of these
35 What are present depend on cooling tower building material as well
- (A) pollution
- (B) population
- (C) dust
- (D) none of these
36 Why is exhaust system coming out of the turbine is admitted to a steam header
- (A) to increase the pressure
- (B) to increase the velocity
- (C) to decrease the pressure
- (D) to increase the velocity
37 Which of the following is a fissile fuel?
- (A) carbon
- (B) potassium
- (C) thorium
- (D) graphite
38 How is air produced in mechanical cooling tower?
- (A) air fan
- (B) propeller fans
- (C) air blowers
- (D) propeller blowers
39 _______ cooling towers use a process similar to the one found in small evaporative cooling units.
- (A) Hyperboloid
- (B) Tower
- (C) Condensate loop
- (D) None
40 Hyperboloid cooling towers have become the design standard for all _______draft cooling towers because of their structural strength and minimum usage of material.
- (A) Natural
- (B) Induce
- (C) Force
- (D) None
41 The hyperboloid shape also aids in accelerating the upward convective air flow, improving __________ efficiency.
- (A) Heating
- (B) Warming
- (C) Cooling
- (D) Cold
42 The __________ that are present depend on cooling tower building material, as well. Cooling towers are built of concrete, wood, plastic or metal.
- (A) Heat
- (B) Pollutants
- (C) Cold
- (D) All of Above
43 There are _______main types of cooling towers that are defined by how water or air passes through them.
- (A) One
- (B) Two
- (C) Three
- (D) Four
44 A ______ is a specialized heat exchanger in which air and water are brought into direct contact with each other in order to reduce the water’s temperature.
- (A) Cooling tower
- (B) Heating tower
- (C) Both
- (D) All are wrong
45 How can we increase the efficiency of a cooling tower?
- (A) Save energy.
- (B) Reduce the amount of water being consumed.
- (C) Decrease the amount of chemicals required for water treatment.
- (D) All of above
46 There are two huge cooling towers close to building site of reactor __ and __ of the Chernobyl Power Plant.
- (A) 1 & 3
- (B) 4 & 5
- (C) 2 & 5
- (D) 1 & 4
47 Cooling towers vary in size from small roof-top units to very large hyperboloid structures that can be up to ____ meters tall and _____ meters in diameter, or rectangular structures that can be over 40 meters tall and 80 meters long.
- (A) 200 & 100
- (B) 100 & 50
- (C) 200 & 50
- (D) 200 & 150
48 How do you service a cooling tower?
- (A) Ensure Proper Airflow.
- (B) Clean Your Tubes.
- (C) Inspect the Water Pump.
- (D) All of above
49 The hyperboloid shape also aids in accelerating the upward convective air flow, improving ________ efficiency.
- (A) Performance
- (B) Cooling
- (C) Heating
- (D) All of the above
50 __________ Cooling towers have become the design standard for all natural-draft cooling towers because of their structural strength and minimum usage of material.
- (A) HCT
- (B) CCT
- (C) Hyperboloid
- (D) None