Electrical Machines Synchronous Machine Applications Online Exam Quiz
Electrical Machines Synchronous Machine Applications GK Quiz. Question and Answers related to Electrical Machines Synchronous Machine Applications. MCQ (Multiple Choice Questions with answers about Electrical Machines Synchronous Machine Applications
The practical speed ranges for the thermal, nuclear and hydel power plants is (in rpm)?
Options
A : 3000, 3000, 300
B : 3000, 300, 300
C : 1500, 1500, 3000
D : 1000, 500, 3000
Synchronous compensators are mainly employed for ___________
Options
A : compensating reactive power
B : compensating real power
C : improving power factor
D : compensating field flux
______ alternator is used in thermal stations and ______ alternator is used in hydel plants.
Options
A : Cylindrical-rotor, salient pole
B : Salinet pole, cylindrical-rotor
C : Salient pole, Reluctance
D : Cylindrical-rotor, cylindrical-rotor
In a 3-phase cylindrical rotor alternator the _________
Options
A : field mmf leads air gap flux, air gap flux leads armature flux
B : field mmf leads air gap flux, air gap flux lags armature flux
C : armature mmf leads air gap flux and air gap flux leads field flux
D : armature mmf leads air gap flux and air gap flux lags field flux
We prefer induction motor over synchronous motor due to ___________
Options
A : no requirement of dc supply
B : starting problems
C : sensitive to environment
D : all of the mentioned
The condition which allows the torques to be taken care for choosing a synchronous motor is/are?
Options
A : starting torque
B : pull-in torque
C : pull-out torque
D : all of the mentioned
A synchronous machine with its field winding on stator and polyphase armature winding on rotor. At steady state, its air gap field is?
Options
A : stationary w.r.t. stator
B : rotating at double the speed Ns w.r.t. rotor
C : rotating in direction opposite to rotor
D : all of the mentioned
One of the most prominent component of base loads is ___________
Options
A : synchronous generator
B : induction generator
C : dc series generator
D : all of the mentioned
The zero power characteristics used in the Potier plot can be obtained by loading the alternator using ___________
Options
A : synchronous motor
B : lamp load
C : dc motor
D : induction motor
Synchronous motor has been preferred for driving the loads requiring high power at low speeds.
Options
A : True
B : False
C :
D :
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