Electrical Machines Synchronous Machine Stability Online Exam Quiz
Electrical Machines Synchronous Machine Stability GK Quiz. Question and Answers related to Electrical Machines Synchronous Machine Stability. MCQ (Multiple Choice Questions with answers about Electrical Machines Synchronous Machine Stability
The supply voltage to an induction motor is decreased by 10%. By what percentage, approximately, will the maximum torque decrease?
Options
A : 5%
B : 10%
C : 20%
D : 40%
If the load angle is increased till 135°, the consequence will be ___________
Options
A : loss of synchronism
B : no alternation of synchronism
C : increase in stability limit
D : reduction in stability limit
Steady state stability limit is defined as maximum power flow possible through a particular point without loss of stability when the ___________
Options
A : power is increased gradually
B : power is increased suddenly
C : power is reduced gradually
D : power is reduces suddenly
If it is planned to bring an incoming alternator to the operating alternator in parallel, then which of the criteria can be ignored?
Options
A : Prime mover speed
B : Voltage magnitude
C : Frequency
D : Phase sequence of the alternator
Which one of the following is the base reason to place field on rotor in the alternator?
Options
A : Small power in field circuit
B : Insulation of high voltage is made easy on stator than on rotor
C : Huge power in stator
D : Large current in the stator
Series capacitors will improve the ___________
Options
A : SSSL
B : Transient stability
C : Hunting
D : Stiffness
In a salient pole synchronous machine the air gap is least under the middle of the pole shoe and increases outwards.
Options
A : True
B : False
C :
D :
Transient stability limit is less important than SSSL.
Options
A : True
B : False
C :
D :
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