Hi friends, this post is about objectives of synchronous machine. Mcq's on synchronous machines which are asked recently in various competitive exams like Gate , Upsc exams and so on. check out and comment if you have any doubts regarding this bits..
1) Alternator operates on the principle of
A) electromagnetic induction
B) self induction
C) mutual induction
D) self or mutual induction
Ans:A
2) In a synchronous machine, if the field flux axis is ahead of the armature field axis in the direction of rotation, the machine operating is
A) synchronous motor
B) synchronous generator
C) asynchronous motor
D) asynchronous generator
Ans:B
3) The armature of an alternator
A) is a stationary member
B) is a revolving member
C) is the frame
D) consists of the winding into which current is induced
Ans:D
4) In modern alternators, the rotating part is
A) field system
B) armature
C) armature as well as field system
D) none of the above
Ans:A
5) The current from the stator of an alternator is taken out to the external load circuit through
A) slip rings
B) commutator segments
C) solid connections
D) carbon brushes
Ans:C
6) Which of the following is the primary reason for placing field on rotor in an alternator?
A) Small power in the field circuit
B) Insulation of high voltage is made easy on stator than on rotor
C) Large power in stator
D) Large current in stator
Ans:B
7) Which type of alternator is used in hydroelectric power stations?
A) Non-salient pole alternator
B) turbo generator
C) salient pole alternator
D) steam turbine alternator
Ans:C
8) In a synchronous machine, the stator frame serves the purpose of
A) holding the armature stampings in position and also in some cases for circulating cold water for cooling
B) insulating the armature windings
C) providing path to the magnetic flux
D) protecting the whole machine
Ans:A
9) In a synchronous machine, the stator frame is made of
A) stainless steel
B) CRGOS
C) cast iron or welded steel plates
D) laminated silicon steel
Ans:C
10) The stator core of a synchronous machine is built up of ................... laminations
A) stainless steel
B) silicon steel
C) cast iron
D) cast steel
Ans:B
If you like my post please share it with your friends and subscribe to latest updates.. If you have doubts you can start new topic on forum and start discussion with our readers..
1) Alternator operates on the principle of
A) electromagnetic induction
B) self induction
C) mutual induction
D) self or mutual induction
Ans:A
2) In a synchronous machine, if the field flux axis is ahead of the armature field axis in the direction of rotation, the machine operating is
A) synchronous motor
B) synchronous generator
C) asynchronous motor
D) asynchronous generator
Ans:B
3) The armature of an alternator
A) is a stationary member
B) is a revolving member
C) is the frame
D) consists of the winding into which current is induced
Ans:D
4) In modern alternators, the rotating part is
A) field system
B) armature
C) armature as well as field system
D) none of the above
Ans:A
5) The current from the stator of an alternator is taken out to the external load circuit through
A) slip rings
B) commutator segments
C) solid connections
D) carbon brushes
Ans:C
6) Which of the following is the primary reason for placing field on rotor in an alternator?
A) Small power in the field circuit
B) Insulation of high voltage is made easy on stator than on rotor
C) Large power in stator
D) Large current in stator
Ans:B
7) Which type of alternator is used in hydroelectric power stations?
A) Non-salient pole alternator
B) turbo generator
C) salient pole alternator
D) steam turbine alternator
Ans:C
8) In a synchronous machine, the stator frame serves the purpose of
A) holding the armature stampings in position and also in some cases for circulating cold water for cooling
B) insulating the armature windings
C) providing path to the magnetic flux
D) protecting the whole machine
Ans:A
9) In a synchronous machine, the stator frame is made of
A) stainless steel
B) CRGOS
C) cast iron or welded steel plates
D) laminated silicon steel
Ans:C
10) The stator core of a synchronous machine is built up of ................... laminations
A) stainless steel
B) silicon steel
C) cast iron
D) cast steel
Ans:B
If you like my post please share it with your friends and subscribe to latest updates.. If you have doubts you can start new topic on forum and start discussion with our readers..
EmoticonEmoticon