BOMA: Motor Controls CORRECT QUESTIONS & ANSWERS(2024 LATEST UPDATE)CORRECT 100%
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Course
BOMA - Instrumentation & Controls
Institution
BOMA - Instrumentation & Controls
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
BOMA: Motor Controls CORRECT QUESTIONS &
ANSWERS(2024 LATEST UPDATE)CORRECT 100%
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
*To convert DC to AC we would need: - ANSWER converter or inverter
The actual full load amps of a motor are found? - ANSWER nameplate of the motor
Three factors which must be considered when selecting a fuse or circuit breaker: - ANSWER amps, volts,
interrupting capacity
A fluorescent tube F40 has a diameter of: - ANSWER 1 1/2 inches
If the motor is drawing excessive amps you would expect to find it: - ANSWER run hot
On a plan "scale 1/8" = 1', then 2 1/2 inches in a ruler equals: - ANSWER 20 feet
The most practical type of switch used to control lights from two locations is a _____? - ANSWER 3 way
switch
Electrical Metallic Tubing (EMT) is sometimes called: - ANSWER thinwall
, The cross-sectional area of electrical wire is measured in: - ANSWER circular mils
The purpose of a bypass isolation switch: - ANSWER allows testing of the emergency generator (ATS)
The purpose of a UPS system is to: - ANSWER supply a regulated voltage with the frequency stability to
the critical load
Which of the following are not required on high-rise buildings: - ANSWER U.P.S. system
A "day tank" is used with: - ANSWER Emergency generator
A "jockey pump" is used with: - ANSWER fire sprinkler system
*Which is required in all computer rooms: - ANSWER Emergency electrical shutoff\Halon system
The capacitor is a device that: - ANSWER stores an electrical charge
*What would be the wattage of a D.C. circuit drawing a two amp load with a resistance of five hundred
ohms?: - ANSWER 2000 watts/1000 watts
The action of a diode is to: - ANSWER allow current flow only in one direction
*Two 50-ohm resistor's in parallel would have the same resistance value as one: - ANSWER 100-ohm
resistor/25-ohm resistor
A double pole switch is used when it is necessary to open both conductors of a circuit. - ANSWER True
Ohm is a unit of electrical resistance. - ANSWER True
, A series circuit is a circuit that has more than one path for current through the components. - ANSWER
False
A parallel circuit is a circuit in which the voltage across each branch is the same. - ANSWER True
The state of charge the battery is measured with: - ANSWER hydrometer
When charging a battery at a high rate, the rate must be reduced to the normal rate if the: - ANSWER
electrolyte temperature exceeds 100°F.
Storage batteries are rated for ampere-hour capacity and _____. - ANSWER voltage
*The resistance of a copper conductor is inversely proportional to the: - ANSWER current through the
conductor
If the light is to be controlled from three different locations, the following switches must be used: -
ANSWER two three-way and one four-way
A 3 way switch is similar to a _____? - ANSWER single pole, double throw switch
conduit fittings are use for: - ANSWER rigid metal conduit
*The maximum distance from a box that nonmetallic-sheathed cable should be stapled will not exceed: -
ANSWER 2 feet/1/2 feet
The size of the rigid metal conduit is determined by: - ANSWER inside diameter (ID)
Flat conductor cable may be used in: - ANSWER offices
Maximum number of bends allowed any conduit between pull boxes is: - ANSWER four 90 degree bends
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