
Synchronous Motors
Quiz
•
Other
•
University
•
Medium
Jennathu Beevi
Used 12+ times
FREE Resource
15 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
When the stator windings are connected in such a way that the number of poles is made half , then the speed of the rotor of the Synchronous Motor -----------------
remains same as the original value
decreases to half the original value
ends to becomes zero
increases to two times the original value
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The speed of the Synchronous motor
increases as the load increases
decreases as the load decreases
always remains constant
none of the above
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In which of the following motors, the stator and rotor magnetic field rotate at the same speed?
Universal Motor
Synchronous Motor
Induction Motor
Reluctance Motor
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The angle between rotating stator flux and rotor poles is called -------------angle.
torque
obtuse
synchronizing
powerfactor
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The power factor of a synchronous motor is unity when
the armature current is maximum
the armature current is minimum
the armature current is zero
none of the above
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The maximum power developed in a synchronous motor occurs at a coupling angle of
30º
60º
90º
180º
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
For the V curves of a synchronous motor , the graph is drawn between -------------------
field current and armature current
terminal voltage and load factor
power factor and field current
armature current and power factor
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