1
Q
Evaporative cooler are known as
A
Swamp cooler
2
Q
Two types of fans
A
Centrifugal fans
Propeller fans
3
Q
Roller bearings require
A
Lubrication the rest don’t
4
Q
Curved air foil has the best
A
Efficiency
5
Q
Propeller fans are called
A
Axial fans
6
Q
Centrifugal fans are
A
Non overloading
7
Q
Pulley is a
A
Wheel with bearing
8
Q
Sheave is
A
Wheel fixed to shaft by nut
9
Q
A sheave is used to
A
Transfer mechanical energy
10
Q
Mixing chambers combine both
A
Return and outdoor air
11
Q
Outdoor air in a mixing chamber makes up for
A
10-20%
12
Q
Maintenance process is what 4
A
Mechanical
Electrical
Controls
Preventative maintenance
