
UNIT 1 (Test 2)
Quiz
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Other
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University
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Hard

Manikandan P.M
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10 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the angle between stator direct axis and quadrature axis
90°
0°
45°
60°
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Synchronous motor can operate at
Lagging power factor only
Leading power factor only
Unity power factor only
Lagging, leading and unity power factor only
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
The variation of reluctance Rl with space angle θr depends on the shape of
stator poles
rotor poles
stator or rotor poles
both stator and rotor poles
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
The maximum power developed in the synchronous motor will depend on
rotor excitation only
maximum value of coupling angle
supply voltage only
rotor excitation supply voltage and maximum value of coupling angle.
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
The single phase reluctance machine acts as a generator when angle δ is
positive
negative
zero
any of the mentioned
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
A synchronous motor is switched on to supply with its field windings shorted on themselves. It will
not start
start and continue to run as an induction motor
start as an induction motor and then run as synchronous motor
bum immediately
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
The damping winding in a synchronous motor is generally used
to provide starting torque only
to reduce noise level
to reduce eddy currents
to prevent hunting and provide the starting torque.
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