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Millwright Level 3 > Ai Fans And Blower > Flashcards

Ai Fans And Blower Flashcards

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1
Q

What is the primary function of a blower?

A

To move air or gas from one location to another.

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2
Q

True or False: Fans are typically used for high pressure applications.

A

False

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3
Q

Fill in the blank: Blowers are designed to produce ______ pressure.

A

positive

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4
Q

What type of blower is commonly used in HVAC systems?

A

Centrifugal blower

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5
Q

What is the difference between a blower and a fan?

A

Blowers move air at higher pressures than fans.

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6
Q

Which component is essential for the operation of a centrifugal blower?

A

Impeller

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7
Q

Multiple choice: Which of the following is NOT a type of fan? A) Axial B) Centrifugal C) Reciprocating

A

C) Reciprocating

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8
Q

What is the purpose of a fan in a cooling system?

A

To circulate air and remove heat.

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9
Q

True or False: Blowers can operate efficiently at varying flow rates.

A

True

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10
Q

Fill in the blank: The efficiency of a blower is often measured in ______.

A

CFM (Cubic Feet per Minute)

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11
Q

What is a common application of axial fans?

A

Ventilation systems

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12
Q

What type of flow do centrifugal fans produce?

A

Radial flow

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13
Q

Multiple choice: Which of the following is a characteristic of a blower? A) Low pressure B) High flow C) High pressure

A

C) High pressure

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14
Q

What is a common material used for blower housings?

A

Steel

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15
Q

True or False: The speed of a blower can be controlled by adjusting the voltage.

A

True

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16
Q

Fill in the blank: A ______ fan is typically used for exhaust applications.

A

centrifugal

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17
Q

What does CFM stand for?

A

Cubic Feet per Minute

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18
Q

What is the purpose of a fan blade?

A

To create airflow by rotating.

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19
Q

Multiple choice: Which component helps to increase the efficiency of a blower? A) Diffuser B) Filter C) Motor

A

A) Diffuser

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20
Q

What is the typical operating range of a blower?

A

100 to 10,000 CFM

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21
Q

True or False: Blowers are always louder than fans.

A

False

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22
Q

Fill in the blank: The term ______ refers to the rate of airflow produced by a blower.

A

flow rate

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23
Q

What type of fan is best for moving large volumes of air at low pressure?

A

Axial fan

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24
Q

What is the primary advantage of using a centrifugal blower over an axial fan?

A

Higher pressure capabilities

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25
Multiple choice: Which type of blower is commonly used in pneumatic conveying systems? A) Positive displacement B) Axial C) Mixed flow
A) Positive displacement
26
What is the main disadvantage of using a fan compared to a blower?
Lower pressure generation
27
True or False: The impeller of a blower is responsible for increasing air pressure.
True
28
Fill in the blank: The ______ is used to control the speed of the blower motor.
VFD (Variable Frequency Drive)
29
What is the function of a blower motor?
To provide the mechanical energy needed for airflow.
30
Multiple choice: Which type of fan is more efficient at high speeds? A) Axial B) Centrifugal C) Both
B) Centrifugal
31
What is the typical pressure range for centrifugal fans?
0.5 to 10 inches of water gauge
32
True or False: Blowers can be used for both cooling and heating applications.
True
33
Fill in the blank: The ______ design of a blower improves airflow efficiency.
scroll
34
What is the role of a filter in a blower system?
To remove particulates from the air before it enters the blower.
35
Multiple choice: Which of the following factors does NOT affect blower performance? A) Ambient temperature B) Altitude C) Color of the blower
C) Color of the blower
36
What is a common cause of blower failure?
Overheating due to lack of airflow
37
True or False: Blowers are usually more compact than fans.
False
38
Fill in the blank: The ______ is the part of the blower that compresses the air.
compressor
39
What is the typical application for a positive displacement blower?
Vacuum systems
40
Multiple choice: Which type of fan is typically used in computer cooling systems? A) Centrifugal B) Axial C) Mixed flow
B) Axial
41
True or False: Blowers require more maintenance than fans.
True
42
What does the term 'static pressure' refer to in blower applications?
The pressure exerted by the air at rest in the system.
43
Fill in the blank: The ______ of a blower affects its ability to move air effectively.
design
44
What is the purpose of a discharge duct in a blower system?
To direct the airflow to the desired location.
45
Multiple choice: What type of blower is used for high-volume, low-pressure applications? A) Centrifugal B) Positive displacement C) Both
A) Centrifugal
46
What is the primary energy source for most industrial blowers?
Electricity
47
True or False: All blowers can operate in both positive and negative pressure environments.
False
48
Fill in the blank: The ______ of a blower impacts its noise level.
design
49
What is the purpose of a blower's inlet screen?
To prevent debris from entering the blower.
50
Multiple choice: Which of the following is a key specification for selecting a blower? A) Noise level B) Color C) Size
A) Noise level
51
What is the impact of altitude on blower performance?
Higher altitudes can reduce efficiency due to lower air density.
52
True or False: Blowers are more efficient than fans for moving air at low velocities.
False
53
Fill in the blank: Blowers are often used in ______ to enhance combustion efficiency.
furnaces
54
What is the importance of balancing a blower?
To reduce vibrations and extend equipment life.
55
Multiple choice: Which type of blower is best for handling viscous materials? A) Centrifugal B) Positive displacement C) Axial
B) Positive displacement
56
What maintenance task is crucial for blowers?
Regular cleaning of filters and impellers.
57
True or False: Fans are more versatile than blowers in terms of applications.
True
58
Fill in the blank: The ______ of a blower influences its energy consumption.
efficiency
59
What is the role of a blower in pneumatic conveying systems?
To transport bulk materials through pipes.
60
Multiple choice: Which of the following is a disadvantage of using a blower? A) High pressure B) High noise levels C) Low maintenance
B) High noise levels
61
What is the significance of a blower's duty cycle?
It indicates how long the blower can operate continuously without overheating.
62
True or False: Blowers can be used in both indoor and outdoor applications.
True
63
Fill in the blank: The ______ of a blower determines how much air it can move.
capacity
64
What is a common safety feature in blower systems?
Overload protection
65
Multiple choice: Which type of blower provides consistent flow regardless of pressure changes? A) Centrifugal B) Positive displacement C) Axial
B) Positive displacement
66
What does the term 'airflow direction' refer to?
The path air takes as it moves through the blower system.
67
True or False: Blowers can be used to create a vacuum.
True
68
Fill in the blank: The ______ of a blower is critical for its performance in high-temperature applications.
material
69
What is the function of a blower's motor controller?
To regulate the speed and performance of the blower motor.
70
Multiple choice: Which type of fan is least efficient at high pressures? A) Axial B) Centrifugal C) Mixed flow
A) Axial
71
What is the role of a pressure switch in a blower system?
To monitor and control the pressure within the system.
72
True or False: Blowers operate best in a closed system.
True
73
Fill in the blank: The ______ of a blower can affect the overall system efficiency.
design
74
What is a common application for exhaust fans?
Removing stale air from buildings.
75
Multiple choice: Which component primarily determines the airflow rate of a blower? A) Impeller B) Motor C) Duct size
A) Impeller
76
What is the impact of humidity on blower performance?
High humidity can reduce airflow efficiency.

Millwright Level 3 (23 decks)

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