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Electric motors operating at low voltages tend to burn out because-
- a)They draw more current which is inversely proportional to the voltage.
- b)They draw more current which is inversely proportional to the square root of the voltage.
- c)They draw heat proportional to V2.
- d)Low voltage sets in electrical discharge.
Correct answer is option 'A'. Can you explain this answer?
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Electric motors operating at low voltages tend to burn out because-a)T...
Electric motors operating at low voltage tend to burn out because they draw more current which is inversely proportional to the voltage.
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Electric motors operating at low voltages tend to burn out because-a)T...
Explanation:
When electric motors operate at low voltages, they tend to burn out due to the fact that they draw more current, which is inversely proportional to the voltage. This can be explained as follows:
1. Relationship between voltage and current:
- In an electric motor, the voltage applied determines the rate at which electric current flows through the motor.
- According to Ohm's Law, the current flowing through a conductor is directly proportional to the voltage applied and inversely proportional to the resistance of the conductor. Mathematically, this can be represented as I = V/R, where I is the current, V is the voltage, and R is the resistance.
- In an electric motor, the resistance remains relatively constant. Therefore, the current flowing through the motor is directly proportional to the voltage applied.
2. Increased current at low voltages:
- When the voltage applied to an electric motor is low, the current drawn by the motor increases proportionally.
- Higher current means that more electrical energy is being converted into heat energy within the motor.
- This increased heat generation can lead to overheating of the motor, causing its insulation and windings to degrade or melt, ultimately resulting in motor failure or burnout.
3. Importance of voltage regulation:
- To prevent burnout in electric motors, it is crucial to ensure that the voltage supplied to the motor remains within the specified operating range.
- If the voltage drops too low, the current drawn by the motor will increase, leading to excessive heat generation and potential burnout.
- Therefore, voltage regulation is necessary to maintain the motor's optimal performance and prevent damage.
Conclusion:
Electric motors operating at low voltages tend to burn out because they draw more current, which is inversely proportional to the voltage. This increased current results in higher heat generation within the motor, leading to overheating and ultimately motor failure. Proper voltage regulation is essential to prevent such burnouts and ensure the motor's longevity and efficient operation.
When electric motors operate at low voltages, they tend to burn out due to the fact that they draw more current, which is inversely proportional to the voltage. This can be explained as follows:
1. Relationship between voltage and current:
- In an electric motor, the voltage applied determines the rate at which electric current flows through the motor.
- According to Ohm's Law, the current flowing through a conductor is directly proportional to the voltage applied and inversely proportional to the resistance of the conductor. Mathematically, this can be represented as I = V/R, where I is the current, V is the voltage, and R is the resistance.
- In an electric motor, the resistance remains relatively constant. Therefore, the current flowing through the motor is directly proportional to the voltage applied.
2. Increased current at low voltages:
- When the voltage applied to an electric motor is low, the current drawn by the motor increases proportionally.
- Higher current means that more electrical energy is being converted into heat energy within the motor.
- This increased heat generation can lead to overheating of the motor, causing its insulation and windings to degrade or melt, ultimately resulting in motor failure or burnout.
3. Importance of voltage regulation:
- To prevent burnout in electric motors, it is crucial to ensure that the voltage supplied to the motor remains within the specified operating range.
- If the voltage drops too low, the current drawn by the motor will increase, leading to excessive heat generation and potential burnout.
- Therefore, voltage regulation is necessary to maintain the motor's optimal performance and prevent damage.
Conclusion:
Electric motors operating at low voltages tend to burn out because they draw more current, which is inversely proportional to the voltage. This increased current results in higher heat generation within the motor, leading to overheating and ultimately motor failure. Proper voltage regulation is essential to prevent such burnouts and ensure the motor's longevity and efficient operation.
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Electric motors operating at low voltages tend to burn out because-a)They draw more current which is inversely proportional to the voltage.b)They draw more current which is inversely proportional to the square root of the voltage.c)They draw heat proportional to V2.d)Low voltage sets in electrical discharge.Correct answer is option 'A'. Can you explain this answer?
Question Description
Electric motors operating at low voltages tend to burn out because-a)They draw more current which is inversely proportional to the voltage.b)They draw more current which is inversely proportional to the square root of the voltage.c)They draw heat proportional to V2.d)Low voltage sets in electrical discharge.Correct answer is option 'A'. Can you explain this answer? for Defence 2024 is part of Defence preparation. The Question and answers have been prepared according to the Defence exam syllabus. Information about Electric motors operating at low voltages tend to burn out because-a)They draw more current which is inversely proportional to the voltage.b)They draw more current which is inversely proportional to the square root of the voltage.c)They draw heat proportional to V2.d)Low voltage sets in electrical discharge.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Defence 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Electric motors operating at low voltages tend to burn out because-a)They draw more current which is inversely proportional to the voltage.b)They draw more current which is inversely proportional to the square root of the voltage.c)They draw heat proportional to V2.d)Low voltage sets in electrical discharge.Correct answer is option 'A'. Can you explain this answer?.
Electric motors operating at low voltages tend to burn out because-a)They draw more current which is inversely proportional to the voltage.b)They draw more current which is inversely proportional to the square root of the voltage.c)They draw heat proportional to V2.d)Low voltage sets in electrical discharge.Correct answer is option 'A'. Can you explain this answer? for Defence 2024 is part of Defence preparation. The Question and answers have been prepared according to the Defence exam syllabus. Information about Electric motors operating at low voltages tend to burn out because-a)They draw more current which is inversely proportional to the voltage.b)They draw more current which is inversely proportional to the square root of the voltage.c)They draw heat proportional to V2.d)Low voltage sets in electrical discharge.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Defence 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Electric motors operating at low voltages tend to burn out because-a)They draw more current which is inversely proportional to the voltage.b)They draw more current which is inversely proportional to the square root of the voltage.c)They draw heat proportional to V2.d)Low voltage sets in electrical discharge.Correct answer is option 'A'. Can you explain this answer?.
Solutions for Electric motors operating at low voltages tend to burn out because-a)They draw more current which is inversely proportional to the voltage.b)They draw more current which is inversely proportional to the square root of the voltage.c)They draw heat proportional to V2.d)Low voltage sets in electrical discharge.Correct answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Defence.
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Electric motors operating at low voltages tend to burn out because-a)They draw more current which is inversely proportional to the voltage.b)They draw more current which is inversely proportional to the square root of the voltage.c)They draw heat proportional to V2.d)Low voltage sets in electrical discharge.Correct answer is option 'A'. Can you explain this answer?, a detailed solution for Electric motors operating at low voltages tend to burn out because-a)They draw more current which is inversely proportional to the voltage.b)They draw more current which is inversely proportional to the square root of the voltage.c)They draw heat proportional to V2.d)Low voltage sets in electrical discharge.Correct answer is option 'A'. Can you explain this answer? has been provided alongside types of Electric motors operating at low voltages tend to burn out because-a)They draw more current which is inversely proportional to the voltage.b)They draw more current which is inversely proportional to the square root of the voltage.c)They draw heat proportional to V2.d)Low voltage sets in electrical discharge.Correct answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
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