BOMA: Motor Controls Questions and Correct Answers
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Course
BOMA
Institution
BOMA
BOMA: Motor Controls Questions and Correct
AnswersBOMA: Motor Controls Questions and Correct
AnswersBOMA: Motor Controls Questions and Correct
AnswersBOMA: Motor Controls Questions and Correct
AnswersBOMA: Motor Controls Questions and Correct
AnswersBOMA: Motor Controls Questions and Corr...
BOMA: Motor Controls Questions and Correct
Answers
A 3600 RPM motor has:
✓ ~~~ two poles
If you throttled the discharge side of a centrifugal pump into closed the amps would:
✓ ~~~ go up
The common method of correcting power factor is:
✓ ~~~ add a capacitor
To convert AC to DC you would need:
✓ ~~~ rectifier
*To convert DC to AC we would need:
✓ ~~~ converter or inverter
The actual full load amps of a motor are found?
✓ ~~~ nameplate of the motor
Three factors which must be considered when selecting a fuse or circuit breaker:
✓ ~~~ amps, volts, interrupting capacity
,A fluorescent tube F40 has a diameter of:
✓ ~~~ 1 1/2 inches
If the motor is drawing excessive amps you would expect to find it:
✓ ~~~ run hot
On a plan "scale 1/8" = 1', then 2 1/2 inches in a ruler equals:
✓ ~~~ 20 feet
The most practical type of switch used to control lights from two locations is a
_____?
✓ ~~~ 3 way switch
Electrical Metallic Tubing (EMT) is sometimes called:
✓ ~~~ thinwall
The cross-sectional area of electrical wire is measured in:
✓ ~~~ circular mils
The purpose of a bypass isolation switch:
✓ ~~~ allows testing of the emergency generator (ATS)
The purpose of a UPS system is to:
, ✓ ~~~ supply a regulated voltage with the frequency stability to the critical load
Which of the following are not required on high-rise buildings:
✓ ~~~ U.P.S. system
A "day tank" is used with:
✓ ~~~ Emergency generator
A "jockey pump" is used with:
✓ ~~~ fire sprinkler system
*Which is required in all computer rooms:
✓ ~~~ Emergency electrical shutoff\Halon system
The capacitor is a device that:
✓ ~~~ 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?:
✓ ~~~ 2000 watts/1000 watts
The action of a diode is to:
✓ ~~~ allow current flow only in one direction
, *Two 50-ohm resistor's in parallel would have the same resistance value as one:
✓ ~~~ 100-ohm resistor/25-ohm resistor
A double pole switch is used when it is necessary to open both conductors of a
circuit.
✓ ~~~ True
Ohm is a unit of electrical resistance.
✓ ~~~ True
A series circuit is a circuit that has more than one path for current through the
components.
✓ ~~~ False
A parallel circuit is a circuit in which the voltage across each branch is the same.
✓ ~~~ True
The state of charge the battery is measured with:
✓ ~~~ hydrometer
When charging a battery at a high rate, the rate must be reduced to the normal rate if
the:
✓ ~~~ electrolyte temperature exceeds 100°F.
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