Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > When a capacitor was connected across the ter...
Start Learning for Free
When a capacitor was connected across the terminals of an ohm meter, the pointer indicated a low resistance initially and then slowly came back to very high resistance. This indicates that capacitor is
- a)Faulty
- b)All right
- c)Leaky
- d)Short-circuited
Correct answer is option 'B'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
When a capacitor was connected across the terminals of an ohm meter, t...
Explanation:
1. Initial Reading: When the capacitor is connected across the terminals of an ohm meter, the pointer indicates a low resistance initially. This is because the ohm meter initially charges the capacitor, causing the pointer to show a low resistance.
2. Slowly Comes Back to High Resistance: As the capacitor gets fully charged, the current flowing through it decreases, causing the pointer of the ohm meter to slowly come back to very high resistance. This is because a fully charged capacitor acts like an open circuit to direct current.
3. Indication of All Right: The slow transition of the pointer from low resistance to high resistance indicates that the capacitor is functioning correctly. This behavior is expected when testing a capacitor with an ohm meter.
4. Conclusion: Therefore, the ohm meter indicating a low resistance initially and then slowly coming back to very high resistance when a capacitor is connected across its terminals is an indication that the capacitor is all right and functioning as expected.
1. Initial Reading: When the capacitor is connected across the terminals of an ohm meter, the pointer indicates a low resistance initially. This is because the ohm meter initially charges the capacitor, causing the pointer to show a low resistance.
2. Slowly Comes Back to High Resistance: As the capacitor gets fully charged, the current flowing through it decreases, causing the pointer of the ohm meter to slowly come back to very high resistance. This is because a fully charged capacitor acts like an open circuit to direct current.
3. Indication of All Right: The slow transition of the pointer from low resistance to high resistance indicates that the capacitor is functioning correctly. This behavior is expected when testing a capacitor with an ohm meter.
4. Conclusion: Therefore, the ohm meter indicating a low resistance initially and then slowly coming back to very high resistance when a capacitor is connected across its terminals is an indication that the capacitor is all right and functioning as expected.
Free Test
FREE
| Start Free Test |
Community Answer
When a capacitor was connected across the terminals of an ohm meter, t...
Concept:
Capacitor behavior:
- Ohmmeter uses dc voltage (battery) to measure the unknown resistance.
- Then the capacitor is subjected to dc source, initially, it acts as a short circuit and at steady-state, it acts as an open circuit.
- At the time when the ohmmeter is connected to the capacitor, the capacitor acts as a short circuit, so low resistance is indicated.
- After some time, the capacitor behaves as an open-circuit, so the pointer moves to the final position.
- This states that the capacitor is in very good condition to be used.
Important Points
- Capacitive reactance is given by Xc = 1/(2πfc) where f = frequency and c = value of capacitance
- Frequency f = 1/T (Time period)
- At the instant when the capacitor is connected to dc source, then V volt is reached in 0 sec so the time period is 0 sec.
- This makes the frequency to be infinity, therefore capacitive reactance becomes zero.
- That's why the capacitor acts as a short circuit initially when the dc source is applied.
- Now capacitor starts charging and voltage is developed across it.
- When the steady-state voltage across the capacitor is equal to source voltage, then after that it doesn't allow any current to pass through it.
- Therefore, acts as highly resistive or this can also be seen when at steady-state, frequency is zero, so capacitive reactance becomes infinity.
- That's why the capacitor blocks dc at the steady-state condition.
Attention Electrical Engineering (EE) Students!
To make sure you are not studying endlessly, EduRev has designed Electrical Engineering (EE) study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Electrical Engineering (EE).
|
Explore Courses for Electrical Engineering (EE) exam
|
|
Similar Electrical Engineering (EE) Doubts
Top Courses for Electrical Engineering (EE)View all
When a capacitor was connected across the terminals of an ohm meter, the pointer indicated a low resistance initially and then slowly came back to very high resistance. This indicates that capacitor isa)Faultyb)All rightc)Leakyd)Short-circuitedCorrect answer is option 'B'. Can you explain this answer?
Question Description
When a capacitor was connected across the terminals of an ohm meter, the pointer indicated a low resistance initially and then slowly came back to very high resistance. This indicates that capacitor isa)Faultyb)All rightc)Leakyd)Short-circuitedCorrect answer is option 'B'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about When a capacitor was connected across the terminals of an ohm meter, the pointer indicated a low resistance initially and then slowly came back to very high resistance. This indicates that capacitor isa)Faultyb)All rightc)Leakyd)Short-circuitedCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When a capacitor was connected across the terminals of an ohm meter, the pointer indicated a low resistance initially and then slowly came back to very high resistance. This indicates that capacitor isa)Faultyb)All rightc)Leakyd)Short-circuitedCorrect answer is option 'B'. Can you explain this answer?.
When a capacitor was connected across the terminals of an ohm meter, the pointer indicated a low resistance initially and then slowly came back to very high resistance. This indicates that capacitor isa)Faultyb)All rightc)Leakyd)Short-circuitedCorrect answer is option 'B'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about When a capacitor was connected across the terminals of an ohm meter, the pointer indicated a low resistance initially and then slowly came back to very high resistance. This indicates that capacitor isa)Faultyb)All rightc)Leakyd)Short-circuitedCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When a capacitor was connected across the terminals of an ohm meter, the pointer indicated a low resistance initially and then slowly came back to very high resistance. This indicates that capacitor isa)Faultyb)All rightc)Leakyd)Short-circuitedCorrect answer is option 'B'. Can you explain this answer?.
Solutions for When a capacitor was connected across the terminals of an ohm meter, the pointer indicated a low resistance initially and then slowly came back to very high resistance. This indicates that capacitor isa)Faultyb)All rightc)Leakyd)Short-circuitedCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Electrical Engineering (EE).
Download more important topics, notes, lectures and mock test series for Electrical Engineering (EE) Exam by signing up for free.
Here you can find the meaning of When a capacitor was connected across the terminals of an ohm meter, the pointer indicated a low resistance initially and then slowly came back to very high resistance. This indicates that capacitor isa)Faultyb)All rightc)Leakyd)Short-circuitedCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
When a capacitor was connected across the terminals of an ohm meter, the pointer indicated a low resistance initially and then slowly came back to very high resistance. This indicates that capacitor isa)Faultyb)All rightc)Leakyd)Short-circuitedCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for When a capacitor was connected across the terminals of an ohm meter, the pointer indicated a low resistance initially and then slowly came back to very high resistance. This indicates that capacitor isa)Faultyb)All rightc)Leakyd)Short-circuitedCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of When a capacitor was connected across the terminals of an ohm meter, the pointer indicated a low resistance initially and then slowly came back to very high resistance. This indicates that capacitor isa)Faultyb)All rightc)Leakyd)Short-circuitedCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice When a capacitor was connected across the terminals of an ohm meter, the pointer indicated a low resistance initially and then slowly came back to very high resistance. This indicates that capacitor isa)Faultyb)All rightc)Leakyd)Short-circuitedCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Electrical Engineering (EE) tests.
|
|
Explore Courses for Electrical Engineering (EE) exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup