BCIT ELECTRICAL DC MACHINES LEVEL 3 EXAM NEWEST
UPDATED ACTUAL WITH COMPLETE QUESTIONS AND
CORRECT ANSWERS
Grease nipples in the end shields indicate that the machine
contains:
C. Open bearings
3 multiple choice options
Small generators that use permanent magnets for field
excitation are called:
C. Magnetos
3 multiple choice options
What is the difference between separately excited and self-
excited fields?
B. Separately excited fields receive field current from an
external source
3 multiple choice options
In self-excited generators, field coils may be connected:
Page 1 of 31
,B. Series or shunt
3 multiple choice options
Which field winding is made of a low number of turns of large-
gauge wire in a generator?
D. Series field winding
3 multiple choice options
What device in the shunt field circuit is used to control
generator voltage?
B. Rheostat
3 multiple choice options
The buildup of voltage in a self-excited generator requires:
B. Residual magnetism
3 multiple choice options
. Which of the following affects generated voltage?
D. All of the above
3 multiple choice options
Page 2 of 31
,Which factors can be varied in an operating generator?
B. Flux per pole and rotational speed
3 multiple choice options
If the speed of the prime mover is decreased by one-third, the
generated voltage will:
C. Decrease by one-third
3 multiple choice options
In a self-excited generator, voltage buildup requires the
presence of:
B. Residual magnetism
3 multiple choice options
Voltage buildup continues until the generator reaches its:
C. No-load terminal voltage
3 multiple choice options
What is the main difference in the construction of a DC
generator and a DC motor?
D. Type of enclosure
3 multiple choice options
Page 3 of 31
, The rotating part of a DC generator is called the
C. Armature
3 multiple choice options
What are the three basic types of armature windings?
B. Lap, wave, frog-leg
3 multiple choice options
Which armature winding is used in high-current, low-voltage
applications?
C. Lap winding
3 multiple choice options
What is the electrical function of the commutator?
B. Reverse armature connections to maintain unidirectional
current in the external circuit
3 multiple choice options
Page 4 of 31
UPDATED ACTUAL WITH COMPLETE QUESTIONS AND
CORRECT ANSWERS
Grease nipples in the end shields indicate that the machine
contains:
C. Open bearings
3 multiple choice options
Small generators that use permanent magnets for field
excitation are called:
C. Magnetos
3 multiple choice options
What is the difference between separately excited and self-
excited fields?
B. Separately excited fields receive field current from an
external source
3 multiple choice options
In self-excited generators, field coils may be connected:
Page 1 of 31
,B. Series or shunt
3 multiple choice options
Which field winding is made of a low number of turns of large-
gauge wire in a generator?
D. Series field winding
3 multiple choice options
What device in the shunt field circuit is used to control
generator voltage?
B. Rheostat
3 multiple choice options
The buildup of voltage in a self-excited generator requires:
B. Residual magnetism
3 multiple choice options
. Which of the following affects generated voltage?
D. All of the above
3 multiple choice options
Page 2 of 31
,Which factors can be varied in an operating generator?
B. Flux per pole and rotational speed
3 multiple choice options
If the speed of the prime mover is decreased by one-third, the
generated voltage will:
C. Decrease by one-third
3 multiple choice options
In a self-excited generator, voltage buildup requires the
presence of:
B. Residual magnetism
3 multiple choice options
Voltage buildup continues until the generator reaches its:
C. No-load terminal voltage
3 multiple choice options
What is the main difference in the construction of a DC
generator and a DC motor?
D. Type of enclosure
3 multiple choice options
Page 3 of 31
, The rotating part of a DC generator is called the
C. Armature
3 multiple choice options
What are the three basic types of armature windings?
B. Lap, wave, frog-leg
3 multiple choice options
Which armature winding is used in high-current, low-voltage
applications?
C. Lap winding
3 multiple choice options
What is the electrical function of the commutator?
B. Reverse armature connections to maintain unidirectional
current in the external circuit
3 multiple choice options
Page 4 of 31
