Mark the order for the decreasing order of the voltage regulation for dc generators.
(a) DC shunt generator > level compound generator > Differential compound generator
(b) DC shunt generator < level compound generator < Differential compound generator
(c) Level compound generator > DC shunt generator > Differential compound generator
(d) Level compound generator < DC shunt generator < Differential compound generator
I had been asked this question in exam.
My doubt stems from Rotating Amplifiers in division DC Generators of Electrical Machines