Exam (elaborations)
BOMA-Instrumentation & Controls With Complete Solution.
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BOMA-Instrumentation & Controls With Complete Solution.
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BOMA-Instrumentation & Controls With CompleteSolution
1. A submaster controller resets the set point of the master controller.: False
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2. Normally open refers to a controlled device that opens when no operating
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ti force is applied.: True
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3. A P.E. Switch is used to change an electrical signal to a pneumatic output.-
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: False
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4. Moisture and dirt are detrimental to the operation of pneumatic control
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ti systems.: True ti
5. A static pressure regulator senses the pressure in the plenum the regulator
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ti controls. The sensor that indicates this pressure to this regulator is called
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a ?: Static tip
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6. The intensity of a force applied to a confined liquid or gas is transmitted
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ti equally in all directions throughout the fluid in the form of fluid pressure. This
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1/6 ti ti
, ti statement is ti ?: Pascals Law ti ti
7.The greater the applied pressure on cylinder piston or the larger the cylinder
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ti piston area, the greater the mechanical output force?: True
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8. A combination starter is a switch for disconnecting and a starter mounted and
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ti one enclosure.: True
ti ti
9. Full load amperage of the motor is the same as starting current.: False
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10.A motor control circuit that is designed so that it must be restarted by
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ti pushing a start button after a power interruption is a
ti ti ti ti ti ti ti ti ti .: 3 wire ti ti
ti control
11.To reverse the direction of rotation of a 3 phase motor, you
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ti Inter- change the connection of the motor
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12.You have a normally closed steam humidifier valve. What action would the
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ti hugrostat/humidistat be?: Reverse action ti ti ti
13.Sensitivity:: The PSI change in the control branch air line pressure for ti ti ti ti ti ti ti ti ti ti ti
ti each degree of temperature change felt by the sensing elements.
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14.Static Pressure:: the outward push of air against the walls of a duct or
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ti plenum.
15.Accuracy:: An instrument's ability to indicate or record the actual ti ti ti ti ti ti ti ti ti
ti value of a measured quantity. ti ti ti ti
2/6 ti ti
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