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Exam (elaborations)

BOMA-HVAC QUESTUIONS WITH CORRECT ANSWERS

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  • Course
  • BOMA
  • Institution
  • BOMA

Exam of 6 pages for the course BOMA at BOMA (BOMA-HVAC)

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  • August 11, 2024
  • 6
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • BOMA
  • BOMA
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julianah420
BOMA-HVAC


The man whose work is considered the real beginning of the science of air-conditioning
_____. - answerWillis Carrier

Psychrometry refers to the relationship between _____ and _____. - answerHumidity;
air

The amount of moisture in the air compared to how much it can hold is _____. -
answerRelative humidity

The human bodies well being depends upon the _____. - answerBodies metabolism

The device used to determine the moisture content of air is the _____ -
answerpsychrometer

Of the fuels listed the one that is the most efficient is _____. - answerGas

The effective temperature takes into consideration the effect of _____ and _____. -
answerHumidity; temperature

Air conditioning is the control of the _____, _____, _____ and _____. -
answerTemperature, humidity, purity and distribution of air.

The element that makes up the greatest percentage by volume of air is _____. -
answerNitrogen

Steam gives off a great amount of heat because of its _____. - answerSpecific heat

The velocity of air moving thru a fan system is expressed in _____. - answerFeet per
minute

What volume of air will move thru a duct 24x18 at velocity of 450 feet per minute? -
answer1350 cfm

The following types of fans are classified as centrifugal fans. - answerForward curved,
radial and backward curved

, Select the statement that does not apply to backward inclined fans. - answerHas an
overloading BHP horse power curve.

The quantity of air moving thru a fan system is expressed in _____. - answerCubic feet
per minute

The instrument used to measure air pressure in duct is the _____. - answerMonometer

Air flow thru a duct has the highest _____. - answerVelocity near the center of the duct.

Select the statement which does not apply to the fan laws. - answerStatic pressure in a
duct increases as the velocity decreases.

Variable air volume system feature is _____. - answerVaries the volume of air with
space temperature conditions

Double duct systems are _____. - answer?

The purpose of a primary control is to _____. - answerStart or stop the system

A pressurestat responds to _____. - answerSystem pressure

The oil safety switch is operated by _____. Oil pressure - answer

A low limit control _____. - answer?

A high limit control _____. - answer?

Limit controls _____. - answerAre wired into the circuit in series

A diulating switch is used to _____. - answerChange proportional action to two position
control.

A ratio relay is used to _____. - answerProvide sequence control of more than one
actuator.

A proportional control: - answerWhere a movement from the set point produces a
proportional movement of the actuator

A three way diverting valve: - answerhas two outlets and one common inlet

Heat will continue to flow between two bodies until they have the same amount of
_____. - answerSensible heat

Heat which causes a change of state is _____. - answerLatent heat

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