Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > Assertion (A): The principal of step-up chopp...
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Assertion (A): The principal of step-up chopper can be employed for the regenerative braking of dc motors.
Reason (R) : The step-up chopper can be employed in regenerative braking only for increasing motor speeds
Reason (R) : The step-up chopper can be employed in regenerative braking only for increasing motor speeds
- 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 the correct explanation of A
- c)A is true but R is false
- d)A is false but R is true
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Assertion (A): The principal of step-up chopper can be employed for th...
The step-up chopper can be employed in regenerative braking both for increasing and decreasing motor speed provided duty cycle a is so adjusted that Vs/( 1 - a) exceeds the fixed source voiiage V0. Hence, reason is a false statement.
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Assertion (A): The principal of step-up chopper can be employed for th...
Answer:
The given assertion (A) states that the principal of a step-up chopper can be employed for the regenerative braking of DC motors. The reason (R) provided is that the step-up chopper can only be used for increasing motor speeds. Let's analyze both assertions to determine their correctness.
Assertion (A):
The principal of a step-up chopper can be employed for the regenerative braking of DC motors.
This assertion states that the principal of a step-up chopper can be utilized for regenerative braking of DC motors. A step-up chopper is a type of DC-DC converter that converts a low voltage to a higher voltage. In regenerative braking, the kinetic energy of the motor is converted back into electrical energy and fed back into the power supply or stored in a storage device. This process allows the motor to act as a generator during braking, which helps in reducing energy wastage.
When a step-up chopper is used for regenerative braking, it can convert the lower voltage generated by the motor into a higher voltage that can be fed back into the supply or stored for later use. Therefore, Assertion (A) is true.
Reason (R):
The step-up chopper can be employed in regenerative braking only for increasing motor speeds.
This reason states that the step-up chopper can only be used for increasing motor speeds during regenerative braking. However, this reason is incorrect. The step-up chopper can be used for regenerative braking irrespective of whether it increases or decreases the motor speed.
During regenerative braking, the step-up chopper converts the lower voltage generated by the motor into a higher voltage. This higher voltage can be used to charge a battery or feed back into the power supply. The motor speed may decrease during braking, but the step-up chopper's role is to convert the voltage, not control the motor speed. Therefore, Reason (R) is false.
To summarize, Assertion (A) is true as the principal of a step-up chopper can be employed for the regenerative braking of DC motors. Reason (R) is false as the step-up chopper can be used for regenerative braking regardless of whether it increases or decreases the motor speed. Hence, the correct answer is option 'C' - A is true but R is false.
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Assertion (A): The principal of step-up chopper can be employed for the regenerative braking of dc motors.Reason (R) : The step-up chopper can be employed in regenerative braking only for increasing motor speedsa)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 the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? for Electrical Engineering (EE) 2025 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): The principal of step-up chopper can be employed for the regenerative braking of dc motors.Reason (R) : The step-up chopper can be employed in regenerative braking only for increasing motor speedsa)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 the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion (A): The principal of step-up chopper can be employed for the regenerative braking of dc motors.Reason (R) : The step-up chopper can be employed in regenerative braking only for increasing motor speedsa)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 the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer?.
Assertion (A): The principal of step-up chopper can be employed for the regenerative braking of dc motors.Reason (R) : The step-up chopper can be employed in regenerative braking only for increasing motor speedsa)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 the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? for Electrical Engineering (EE) 2025 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): The principal of step-up chopper can be employed for the regenerative braking of dc motors.Reason (R) : The step-up chopper can be employed in regenerative braking only for increasing motor speedsa)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 the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion (A): The principal of step-up chopper can be employed for the regenerative braking of dc motors.Reason (R) : The step-up chopper can be employed in regenerative braking only for increasing motor speedsa)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 the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer?.
Solutions for Assertion (A): The principal of step-up chopper can be employed for the regenerative braking of dc motors.Reason (R) : The step-up chopper can be employed in regenerative braking only for increasing motor speedsa)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 the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Electrical Engineering (EE).
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ample number of questions to practice Assertion (A): The principal of step-up chopper can be employed for the regenerative braking of dc motors.Reason (R) : The step-up chopper can be employed in regenerative braking only for increasing motor speedsa)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 the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Electrical Engineering (EE) tests.
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