(a) Draw the circuit diagram of the following d.c. generators:
(i) series;
(ii) shunt.
(b) A d.c. shunt generator supplies a current of 28 A at 400 V. The armature
and field resistances are 0.5 Q and 200 Q respectively. Calculate the:
(i) field current;
(H) armature current.
The expected answers were:
(a)
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r-, ~ ,.,' r.\ .••• . "t) .
1
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(a)
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VT .~
(b) (i)
=~=2A
200
(ii) Ia = IL + If
= 28 + 2 = 30 A |