Separately excited generator, when running at 1200 rev per min, supplies 200a at 125v to a circuit of constant resistance. What will be the current when the speed is dropped to 1000 rev per min if the field current is unaltered? Armature resistance : 0.04 ; total drop at brushes: 2 v; ignore change in armature reaction.
Answers
Answered by
0
Answer:
200 volts
Explanation:
v= i x r+0.04
125-2= 200 x r+0.04
r +0.04= 123/200ohms
r=0.615-0.04
=0.611 ohms
N2:n1=v2:v1
1200:1000=v2:200
volts=v2=200*1200/1000
=240 v
v1:v2=n1:n2
=1000/1200
=v1:240
=200/240
v1=200 volts
Answered by
3
Answer:
166A
Explanation:No explanation; But the answer is correct.
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