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Assertion (A): DC servomotors are more commonly used in armature controlled mode than field controlled mode.Reason (R): Armature controlled Dc motors have higher starting torque than fiels controlled motors.(a) Both A and R are true and R is the correct explanation of A(b) Both A and R are true but R is not correct explanation of A(c) A is true but R is false(d) A is false but R is trueI have been asked this question during an interview for a job.The question is from Differential Equations of Physical Systems and Dynamics of Robotic Mechanisms topic in division Mathematical Models of Physical Systems of Control Systems |
Answer» CORRECT answer is (a) Both A and R are true and R is the correct explanation of A The BEST explanation: To get higher SPEED in FIELD controlled dc motor, field current is decreased with DECREASE in torque. |
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