Q. External characteristics for all separately DC generators (except series generator) can be summarized as ____________

View solution

Q. What is Self-excitation in DC shunt generator?

View solution

Q. For self-excited DC generator, field circuit curve in the OCC will be __________

View solution

Q. Intersection of Rf line and magnetization curve will give _____________

View solution

Q. What will happen if field resistance is decreased?

View solution

Q. No-load voltage can’t be defined where _____________

View solution

Q. Machine does not excite to an appreciable value when ___________

View solution

Q. No-load voltage observed at two different field resistance values, is V1 < V2. What will be the relation in field resistance values?

View solution

Q. No-load voltage observed at two different field resistance values, is V1 < V2. What will be the relation in speed if field resistance is kept same for both cases?

View solution

Q. DC generator will not self-excite in __________

View solution

Q. Which of the following is not a reason, behind failing of self-exciting machine?

View solution

Q. By changing the polarity of the armature of failed self-exciting machine, machine can be started.

View solution

Q. Which of the following will be useful to generate positive feedback?

View solution

Q. Characteristics of separately excited DC generator are drawn by keeping _____

View solution

Q. What is the reason behind dropping down of Eₐ with load?

View solution

Q. External characteristic differ from an internal characteristic in separately excited DC generator by _________

View solution

Q. The variation in terminal voltage of DC shunt generator with respect to variation in separately excited DC generator is ___________

View solution

Q. Which of the following characteristic lies above of all others?

View solution

Q. Why differential compound generator is not used in practice?

View solution

Q. How compounding level in a compound machine is adjusted?

View solution