A cumulatively compounded long shunt generator when operating as a motor would be____________?
Correct answer: B. deferentially compounded long shunt
- A. cumulatively compounded long shunt
- B. deferentially compounded long shunt
- C. cumulatively compounded short shunt
- D. differentially compounded short shunt
Explanation
When a compound generator operates as a motor, the armature current reverses relative to the series-field connection, reversing the series-field mmf's effect. Thus cumulative compounding becomes differential, while the long-shunt connection remains long-shunt.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Electrical Machines
1,061 free Electrical Machines MCQs from Electrical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Electrical Engineering questions like this
Electrical Engineering is on 2 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Electrical Machines questions
The demagnetising component of armature reaction in a D.C. generator___________?
To avoid formation of grooves in the commutator of a D.C. machine?
Magnetic field in a D.C. generator is produced by_______________?
Armature coil is short circuited by brushes when it lies_____________?
A D.C. welding generator has____________?
In a D.C. generator the critical resistance refers to the resistance of_____________?