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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.
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 true
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Assertion (A): DC servomotors are more commonly used in armature contr...
Explanation: To get higher speed in field controlled dc motor, field current is decreased with decrease in torque.
Most Upvoted Answer
Assertion (A): DC servomotors are more commonly used in armature contr...
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 field controlled motors.
Explanation:
- DC servomotors are widely used in various applications such as robotics, automation, and industrial processes. These motors provide precise control and accurate positioning.
- The performance of a DC servomotor is determined by the control method used to regulate its speed and torque. Two common control methods are armature controlled and field controlled.
- In armature controlled mode, the armature current is varied to control the speed and torque of the motor. This control method is more commonly used because it provides better dynamic response and faster torque control.
- The armature controlled mode allows the motor to generate a higher starting torque compared to the field controlled mode. This is because the armature current can be increased to provide a higher torque at startup, enabling the motor to overcome the inertia of the load more effectively.
- On the other hand, in field controlled mode, the field current is varied to control the speed and torque of the motor. This control method is less commonly used in DC servomotors because it has slower response and less precise control compared to the armature controlled mode.
- The assertion (A) that DC servomotors are more commonly used in armature controlled mode is true because of the advantages it offers in terms of dynamic response and torque control.
- The reason (R) given for the assertion is also true. Armature controlled DC motors do have higher starting torque compared to field controlled motors, which is one of the factors contributing to their widespread use in various applications.
Conclusion:
Both the assertion (A) and the reason (R) are true, and the reason is the correct explanation of the assertion. DC servomotors are indeed more commonly used in armature controlled mode than field controlled mode, and this is mainly due to the higher starting torque provided by the armature controlled mode.
Reason (R): Armature controlled DC motors have higher starting torque than field controlled motors.
Explanation:
- DC servomotors are widely used in various applications such as robotics, automation, and industrial processes. These motors provide precise control and accurate positioning.
- The performance of a DC servomotor is determined by the control method used to regulate its speed and torque. Two common control methods are armature controlled and field controlled.
- In armature controlled mode, the armature current is varied to control the speed and torque of the motor. This control method is more commonly used because it provides better dynamic response and faster torque control.
- The armature controlled mode allows the motor to generate a higher starting torque compared to the field controlled mode. This is because the armature current can be increased to provide a higher torque at startup, enabling the motor to overcome the inertia of the load more effectively.
- On the other hand, in field controlled mode, the field current is varied to control the speed and torque of the motor. This control method is less commonly used in DC servomotors because it has slower response and less precise control compared to the armature controlled mode.
- The assertion (A) that DC servomotors are more commonly used in armature controlled mode is true because of the advantages it offers in terms of dynamic response and torque control.
- The reason (R) given for the assertion is also true. Armature controlled DC motors do have higher starting torque compared to field controlled motors, which is one of the factors contributing to their widespread use in various applications.
Conclusion:
Both the assertion (A) and the reason (R) are true, and the reason is the correct explanation of the assertion. DC servomotors are indeed more commonly used in armature controlled mode than field controlled mode, and this is mainly due to the higher starting torque provided by the armature controlled mode.
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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 Ab)Both A and R are true but R is not correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'A'. Can you explain this answer? for Electrical Engineering (EE) 2026 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about 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 Ab)Both A and R are true but R is not correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for 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 Ab)Both A and R are true but R is not correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'A'. Can you explain this answer?.
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