No load speed of the DC shunt motor is 1322 rpm while full load speed is 1182 rpm. What will be the speed regulation?(a) 12.82 %(b) 11.8 %(c) 16.6 %(d) 14.2 %This question was posed to me in a national level competition.My question is taken from Speed Control Using Field Control of Shunt Motor in section DC Motors of DC Machines

No load speed of the DC shunt motor is 1322 rpm while full load speed

1.	No load speed of the DC shunt motor is 1322 rpm while full load speed is 1182 rpm. What will be the speed regulation?(a) 12.82 %(b) 11.8 %(c) 16.6 %(d) 14.2 %This question was posed to me in a national level competition.My question is taken from Speed Control Using Field Control of Shunt Motor in section DC Motors of DC Machines
Answer» The correct option is (b) 11.8 % For explanation: SPEED regulation is equal to (No-load speed – Full load speed) / (Full load speed). By substituting all the VALUES, speed regulation= (1322-1182)/ 1182. Speed regulation is given by 0.118. In PERCENTAGE NOTATION SR= 11.8 %.

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