Chapter 127

Question 0

Centrifugal fans are classified as:
A) backward inclined
B) straight
C) backward inclined with airfoil blades
D) forward curved
E) all of the above

Answer 0

E) all of the above

Question 1

Which of the following is not a centrifugal fan?
A) backward inclined fan wheel
B) forward curved fan wheel
C) the propeller fan
D) radial blade fan
E) backward inclined airfoil blade fan

Answer 1

C) the propeller fan

Question 2

Control of the static pressure and horsepower requirements at a given speed is obtained by using a/an _____.

Answer 2

Variable inlet vane control

Question 3

Velocity pressure exerted by the air is measured by connecting the upstream leg of a ______ with the opening facing the air flow in the air duct.

Answer 3

Manometer

Question 4

A centrifugal type of fan is best suited to move large volumes of low pressure air.
A) true
B) false

Answer 4

B) false