CDC 3E151: VOLUME 2. HVAC/R FUNDAMENTALS EXAM
QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS
VERIFIED LATEST UPDATE
(201) What affect will dust on fan
blades have on heat It will reduce
heat transfer transfer?
(201) Where do you view the
rotation and discharge of a On the
drive side centrifugal fan?
(201) Why are vanes used in the vane axial fan? To straighten out the
spiraling motion of the air
, (201) What will allow a sheave
to be used on different
Bushings diameter shafts?
(201) Where will the classic V-belts ( A
through E ) be Medium
horsepower applications used?
(201) If you have four belts and one is bad, how many 4
should you replace?
(202) In a single-duct unit, why is the manual
damper left To maintain a constant
airflow through the box in its initial position?
(202) Which design(s) do multiple-path systems use? Separate cold- and
warm-air duct distribution systems or separate supply duct to
each zone
(202) Why are multi-path, multi-zone systems
limited to Because of the multiple
QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS
VERIFIED LATEST UPDATE
(201) What affect will dust on fan
blades have on heat It will reduce
heat transfer transfer?
(201) Where do you view the
rotation and discharge of a On the
drive side centrifugal fan?
(201) Why are vanes used in the vane axial fan? To straighten out the
spiraling motion of the air
, (201) What will allow a sheave
to be used on different
Bushings diameter shafts?
(201) Where will the classic V-belts ( A
through E ) be Medium
horsepower applications used?
(201) If you have four belts and one is bad, how many 4
should you replace?
(202) In a single-duct unit, why is the manual
damper left To maintain a constant
airflow through the box in its initial position?
(202) Which design(s) do multiple-path systems use? Separate cold- and
warm-air duct distribution systems or separate supply duct to
each zone
(202) Why are multi-path, multi-zone systems
limited to Because of the multiple
