- Study guides, Class notes & Summaries

A 3600 RPM motor has: - ANSWER two poles If you throttled the discharge side of a centrifugal pump into closed the amps would: - ANSWER go up The common method of correcting power factor is: - ANSWER add a capacitor To convert AC to DC you would need: - ANSWER rectifier

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22 pages

Written in 2024/2025

Grade A+

shantelleG

A holding contact or maintaining contact in a magnetic motor starter is normally connected in parallel with the? - ANSWER Stop push button, start push button, and starter coil The armatures of both AC and DC contactors must move freely or? - ANSWER all the contacts may weld together Which of the following devices prevent motors from drawing too much current? - ANSWER overloads The primary difference between a motor starter and a motor contactor is the starter has an? - ANSWER overload p...

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8 pages

Written in 2024/2025

Grade A+

shantelleG

laminar flow - ANSWER - A streamline or viscous flow. - layers of water flowing over one another at different speeds with virtually no mixing between layers. - Fluid particles move in definite and observable paths or stream lines. - The flow is characteristic of viscous (thick) fluid or is one in which viscosity of the fluid plays a significant part. turbulent flow - ANSWER Irregular movement of particles of the fluid.

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6 pages

Written in 2024/2025

Grade A+

shantelleG

How may fittings be attached to a high pressure boiler? a. threaded b. certified welds c. flanges d. any of the above - ANSWER d. any of the above Which test determines the relieving capacity of safety valves? a. hydrostatic test b. accumulation test c. orsat test ration test - ANSWER b. accumulation test Flue gasses can leave at high temperatures. We can recover some of this heat using a(n): a. flash tank b. open feedwater heater c. economizer d. air compressor - ANSWER c. eco...

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21 pages

Written in 2024/2025

Grade A+

shantelleG

Usually if a motor in a system feels hot and you think it is overloading you should not open the flow valve further because? - ANSWER Increase in flow will usually increase the horsepower requirements. Net positive suction head is? - ANSWER The amount of absolute pressure actually available at the suction inlet of the pump to force the liquid of the pump.

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2 pages

Written in 2024/2025

Grade A+

shantelleG

Two basic categories of chillers are the ___. a. Compression cycle and absorption b. purge and absorption c. absorption and lithium bromide d. purge and lithium bromide - ANSWER a. Compression cycle and absorption The five requirements for comfort are proper temperature, humidity, filtration, _____, and ventilation. a. circulation b. velocity c. . d. none of the above - ANSWER a. circulation

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26 pages

Written in 2024/2025

Grade A+

shantelleG

A submaster controller resets the set point of the master controller. - ANSWER False Normally open refers to a controlled device that opens when no operating force is applied. - ANSWER True A P.E. Switch is used to change an electrical signal to a pneumatic output. - ANSWER False Moisture and dirt are detrimental to the operation of pneumatic control systems. - ANSWER True

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7 pages

Written in 2024/2025

Grade A+

shantelleG

Usually if a motor in a system feels hot and you think it is overloading you should not open the flow valve further because? - ANSWER Increase in flow will usually increase the horsepower requirements. Net positive suction head is? - ANSWER The amount of absolute pressure actually available at the suction inlet of the pump to force the liquid up the pump. If the seal has just been replaced and if the pump leaks slightly at start up, first? - ANSWER Allow the pump to continue to run for a s...

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22 pages

Written in 2024/2025

Grade A+

shantelleG

What important function(s) does an air receiver perform? - ANSWER Dissipates heat, dampens compressor pulsations, act as water and oil trap On a compressed air system, a safety valve would generally be installed on the: - ANSWER Air receiver Variable air volume system: - ANSWER Typically use VFDs to save energy. In figure 1.3, a full call for cooling would be at what branch pressure to the damper motor? - ANSWER 3 PSIG

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6 pages

Written in 2024/2025

Grade A+

shantelleG

When Starting a centrifugal pump That is part of a manifold with no check valves - ANSWER You should open the suction valve, start the pump and open the discharge valve slowly Curb cock - ANSWER A Valve insert it in a water line between the corporation stop and the water meter is generally called To check sheave wear - ANSWER Measure each groove angle Variable pitch sheaves may be used in some cases to provide which of the following types of speech changes - ANSWER Small

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9 pages

Written in 2024/2025

Grade A+

shantelleG

BOMA Bundled Exams Questions and Answers Multiple Versions Latest Updates (2024/2025) (Complete, Accurate, and Verified)

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13 items

StellarScores

BOMA-Instrumentation & Controls Questions and Answers Graded A+ A submaster controller resets the set point of the master controller. False Normally open refers to a controlled device that opens when no operating force is applied. True A P.E. Switch is used to change an electrical signal to a pneumatic output. False Moisture and dirt are detrimental to the operation of pneumatic control systems. True A static pressure regulator senses the pressure in the plenum the regulator contro...

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11 pages

Written in 2023/2024

Grade A

StellarScores

BOMA - Instrumentation & Controls Questions and Answers Rated A+ What important function(s) does an air receiver perform? Dissipates heat, Dampens compressor pulsations, Act as water and oil trap On a compressed air system a safety valve would generally be installed on the: Air receiver Variable air volume system: Typically use VFDs to save energy In figure 1.3, a full call for cooling would be at what branch pressure to the damper motor? 3 psig A ratio relay would be used to. Contr...

5.0

(1)

13 pages

Written in 2023/2024

Grade A+

StellarScores

BOMA - Instrumentation & Controls Questions and Answers Rated A+ What important function(s) does an air receiver perform? Dissipates heat, Dampens compressor pulsations, Act as water and oil trap On a compressed air system a safety valve would generally be installed on the: Air receiver Variable air volume system: Typically use VFDs to save energy In figure 1.3, a full call for cooling would be at what branch pressure to the damper motor? 3 psig A ratio relay would be used to. Control...

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13 pages

Written in 2023/2024

Grade A+

ExcellentScores