A separately excited d.c. motor fed from single phase full converter with firing angle 60° runs at 1000 r.p.m.

A separately excited d.c. motor fed from single phase full converter with firing angle 60° runs at 1000 r.p.m. If motor is connected to single phase semiconverter with the same firing angle of 60°, it would run at (a) 2000 rpm (b) 1850 rpm (c) 1500 rpm (d) 1000 rpm 
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3 Answers

Answer :

1850
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Answer :

2000
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Answer :

image Ans =1500

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