an oil carrier ring is used to lubricate what type of bearing?
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Sleeve bearing
how are primary windings on a transformer identified?
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the primary winding terminals are identified with the letter H
What is electromagnetism?
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Magnetism created by current flowing through a coil of wire.
What is reluctance in a magnetic circuit similar to in an electrical circuit?
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resistance.
The neutral plane is ?
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The points in a coils rotation where zero voltage is induced.
if a squirrel cage motor rotation is clockwise with ACB phase sequence, and the
phase sequence ABC is applied the motor will run in what direction?
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counter clockwise
What is the percent of slip for a three phase 60hz motor that has 6 poles and rotates
at 1157rpm?
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3.58%
What measurement does the meter in figure 1 indicate? (Meter in picture reads 0.790
M ohms)
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790 k ohms
What is the result of an improperly balanced armature?
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Vibration
the secondary winding of a 11,000 volt to 220 volt transformer has 50 windings on the
secondary. How many turns are on the primary winding?
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2,500 turns
What does the brush rigging fasten to?
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one of the end bells.
What is indicated by the reading on the meter in figure 3? (meter reads 2230 ohms, on
ohms setting. leads connected to ohms and COM jacks.
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2.23 k ohms
If a current carrying wire is placed perpendicular to a field created by two magnets of
opposite polarity what happens?
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The conductor is moved at right angles to the flux of the magnetic poles.
What color is a commutator with good commutation?
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Chocolate
A transformer has 728 turns on the primary winding and 56 turns on the secondary.
with 120 volts applied on the primary, what is the output voltage on the secondary?
Give this one a try later!
Sleeve bearing
how are primary windings on a transformer identified?
Give this one a try later!
the primary winding terminals are identified with the letter H
What is electromagnetism?
,Give this one a try later!
Magnetism created by current flowing through a coil of wire.
What is reluctance in a magnetic circuit similar to in an electrical circuit?
Give this one a try later!
resistance.
The neutral plane is ?
Give this one a try later!
The points in a coils rotation where zero voltage is induced.
if a squirrel cage motor rotation is clockwise with ACB phase sequence, and the
phase sequence ABC is applied the motor will run in what direction?
Give this one a try later!
counter clockwise
What is the percent of slip for a three phase 60hz motor that has 6 poles and rotates
at 1157rpm?
,Give this one a try later!
3.58%
What measurement does the meter in figure 1 indicate? (Meter in picture reads 0.790
M ohms)
Give this one a try later!
790 k ohms
What is the result of an improperly balanced armature?
Give this one a try later!
Vibration
the secondary winding of a 11,000 volt to 220 volt transformer has 50 windings on the
secondary. How many turns are on the primary winding?
Give this one a try later!
2,500 turns
What does the brush rigging fasten to?
, Give this one a try later!
one of the end bells.
What is indicated by the reading on the meter in figure 3? (meter reads 2230 ohms, on
ohms setting. leads connected to ohms and COM jacks.
Give this one a try later!
2.23 k ohms
If a current carrying wire is placed perpendicular to a field created by two magnets of
opposite polarity what happens?
Give this one a try later!
The conductor is moved at right angles to the flux of the magnetic poles.
What color is a commutator with good commutation?
Give this one a try later!
Chocolate
A transformer has 728 turns on the primary winding and 56 turns on the secondary.
with 120 volts applied on the primary, what is the output voltage on the secondary?
