Question

Characteristics of a DC generator drawn across Vt vs If at rated armature current and constant speed, is called as ____________

(a) Load characteristics

(b) No-load characteristics

(c) External characteristics

(d) Armature characteristics

This question was posed to me in class test.

My query is from No Load with On Load Characteristics of DC Generator topic in section DC Generator of DC Machines

Answer 1

The correct option is (a) Load characteristics

To explain: Since we have Ia value which is equal to rated i.e. non-zero, it is indeed not a no-load characteristic. Axes given are Vt and If, hence it is not an armature characteristic. Thus, it’s called as load characteristic or magnetization characteristic on load.