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Consider the following statements associated with CSI and VSI:
1. In CSI, commutation is load dependent process.
2. Thyristorised current source fed inverter has inherent four quadrant operation.
3. In VS! dynamic braking is applicable during ac line failure.
4. MOSFET and transistor are more suitable for CSi compared to VSI.
1. In CSI, commutation is load dependent process.
2. Thyristorised current source fed inverter has inherent four quadrant operation.
3. In VS! dynamic braking is applicable during ac line failure.
4. MOSFET and transistor are more suitable for CSi compared to VSI.
Which of the statements given above is/are correct?
- a)1, 2 and 3
- b)3 and 4
- c)2 only
- d)1 only
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
Consider the following statements associated with CSI and VSI:1. In CS...
• In CSI at light load, commutation time is considerably increased, which can restrict the highest frequency. Hence, commutation is load dependent process in CSI. Thus, statement-1 is correct.
• A VSl requires an additional line commutated converter for reverse power flow while it is hot so for a CSI i.e. a CSI has inherent four quadrant operation. Thus, statement-2 is correct.
• In VSl, dynamic braking is applicable during ac line failure. Thus, statement-3 is correct.
• MOSFET and transistor are more suitable for VSl not for CSI because in CSI large transient voltage is produced during commutation. Hence, statement-4 is not correct.
• A VSl requires an additional line commutated converter for reverse power flow while it is hot so for a CSI i.e. a CSI has inherent four quadrant operation. Thus, statement-2 is correct.
• In VSl, dynamic braking is applicable during ac line failure. Thus, statement-3 is correct.
• MOSFET and transistor are more suitable for VSl not for CSI because in CSI large transient voltage is produced during commutation. Hence, statement-4 is not correct.
Most Upvoted Answer
Consider the following statements associated with CSI and VSI:1. In CS...
Explanation:
The correct answer is option 'A' - 1, 2, and 3. Let us understand each statement and its correctness.
Statement 1: In CSI, commutation is a load-dependent process.
- This statement is correct. In Current Source Inverter (CSI), the commutation process is load-dependent. The commutation of the current from one thyristor to another is initiated by the load current becoming zero. Hence, it is dependent on the load characteristics.
Statement 2: Thyristorised current source-fed inverter has inherent four-quadrant operation.
- This statement is correct. CSI has inherent four-quadrant operation. It means that it can provide both forward and reverse power flow in both motoring and regenerative braking modes. The direction of power flow can be changed by changing the gating signals to the thyristors.
Statement 3: In VSI, dynamic braking is applicable during AC line failure.
- This statement is correct. In Voltage Source Inverter (VSI), dynamic braking can be applied during AC line failure. During normal operation, the VSI converts DC power into AC power. However, during AC line failure, the VSI can be used to provide dynamic braking by converting the mechanical energy of the rotating load into electrical energy, which is dissipated as heat in the braking resistor.
Statement 4: MOSFET and transistor are more suitable for CSI compared to VSI.
- This statement is incorrect. MOSFET and transistors are more suitable for Voltage Source Inverters (VSI) rather than Current Source Inverters (CSI). This is because MOSFETs and transistors can operate at high frequencies and have fast switching characteristics, which are required for VSI operation. On the other hand, CSI relies on thyristors for commutation, which have slower switching characteristics compared to MOSFETs and transistors.
In conclusion, statements 1, 2, and 3 are correct, while statement 4 is incorrect. Therefore, the correct answer is option 'A' - 1, 2, and 3.
The correct answer is option 'A' - 1, 2, and 3. Let us understand each statement and its correctness.
Statement 1: In CSI, commutation is a load-dependent process.
- This statement is correct. In Current Source Inverter (CSI), the commutation process is load-dependent. The commutation of the current from one thyristor to another is initiated by the load current becoming zero. Hence, it is dependent on the load characteristics.
Statement 2: Thyristorised current source-fed inverter has inherent four-quadrant operation.
- This statement is correct. CSI has inherent four-quadrant operation. It means that it can provide both forward and reverse power flow in both motoring and regenerative braking modes. The direction of power flow can be changed by changing the gating signals to the thyristors.
Statement 3: In VSI, dynamic braking is applicable during AC line failure.
- This statement is correct. In Voltage Source Inverter (VSI), dynamic braking can be applied during AC line failure. During normal operation, the VSI converts DC power into AC power. However, during AC line failure, the VSI can be used to provide dynamic braking by converting the mechanical energy of the rotating load into electrical energy, which is dissipated as heat in the braking resistor.
Statement 4: MOSFET and transistor are more suitable for CSI compared to VSI.
- This statement is incorrect. MOSFET and transistors are more suitable for Voltage Source Inverters (VSI) rather than Current Source Inverters (CSI). This is because MOSFETs and transistors can operate at high frequencies and have fast switching characteristics, which are required for VSI operation. On the other hand, CSI relies on thyristors for commutation, which have slower switching characteristics compared to MOSFETs and transistors.
In conclusion, statements 1, 2, and 3 are correct, while statement 4 is incorrect. Therefore, the correct answer is option 'A' - 1, 2, and 3.
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Consider the following statements associated with CSI and VSI:1. In CSI, commutation is load dependent process.2. Thyristorised current source fed inverter has inherent four quadrant operation.3. In VS! dynamic braking is applicable during ac line failure.4. MOSFET and transistor are more suitable for CSi compared to VSI.Which of the statements given above is/are correct?a)1, 2 and 3 b)3 and 4c)2 only d)1 onlyCorrect answer is option 'A'. Can you explain this answer?
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Consider the following statements associated with CSI and VSI:1. In CSI, commutation is load dependent process.2. Thyristorised current source fed inverter has inherent four quadrant operation.3. In VS! dynamic braking is applicable during ac line failure.4. MOSFET and transistor are more suitable for CSi compared to VSI.Which of the statements given above is/are correct?a)1, 2 and 3 b)3 and 4c)2 only d)1 onlyCorrect answer is option 'A'. 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 Consider the following statements associated with CSI and VSI:1. In CSI, commutation is load dependent process.2. Thyristorised current source fed inverter has inherent four quadrant operation.3. In VS! dynamic braking is applicable during ac line failure.4. MOSFET and transistor are more suitable for CSi compared to VSI.Which of the statements given above is/are correct?a)1, 2 and 3 b)3 and 4c)2 only d)1 onlyCorrect answer is option 'A'. 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 Consider the following statements associated with CSI and VSI:1. In CSI, commutation is load dependent process.2. Thyristorised current source fed inverter has inherent four quadrant operation.3. In VS! dynamic braking is applicable during ac line failure.4. MOSFET and transistor are more suitable for CSi compared to VSI.Which of the statements given above is/are correct?a)1, 2 and 3 b)3 and 4c)2 only d)1 onlyCorrect answer is option 'A'. Can you explain this answer?.
Consider the following statements associated with CSI and VSI:1. In CSI, commutation is load dependent process.2. Thyristorised current source fed inverter has inherent four quadrant operation.3. In VS! dynamic braking is applicable during ac line failure.4. MOSFET and transistor are more suitable for CSi compared to VSI.Which of the statements given above is/are correct?a)1, 2 and 3 b)3 and 4c)2 only d)1 onlyCorrect answer is option 'A'. 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 Consider the following statements associated with CSI and VSI:1. In CSI, commutation is load dependent process.2. Thyristorised current source fed inverter has inherent four quadrant operation.3. In VS! dynamic braking is applicable during ac line failure.4. MOSFET and transistor are more suitable for CSi compared to VSI.Which of the statements given above is/are correct?a)1, 2 and 3 b)3 and 4c)2 only d)1 onlyCorrect answer is option 'A'. 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 Consider the following statements associated with CSI and VSI:1. In CSI, commutation is load dependent process.2. Thyristorised current source fed inverter has inherent four quadrant operation.3. In VS! dynamic braking is applicable during ac line failure.4. MOSFET and transistor are more suitable for CSi compared to VSI.Which of the statements given above is/are correct?a)1, 2 and 3 b)3 and 4c)2 only d)1 onlyCorrect answer is option 'A'. Can you explain this answer?.
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Consider the following statements associated with CSI and VSI:1. In CSI, commutation is load dependent process.2. Thyristorised current source fed inverter has inherent four quadrant operation.3. In VS! dynamic braking is applicable during ac line failure.4. MOSFET and transistor are more suitable for CSi compared to VSI.Which of the statements given above is/are correct?a)1, 2 and 3 b)3 and 4c)2 only d)1 onlyCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for Consider the following statements associated with CSI and VSI:1. In CSI, commutation is load dependent process.2. Thyristorised current source fed inverter has inherent four quadrant operation.3. In VS! dynamic braking is applicable during ac line failure.4. MOSFET and transistor are more suitable for CSi compared to VSI.Which of the statements given above is/are correct?a)1, 2 and 3 b)3 and 4c)2 only d)1 onlyCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of Consider the following statements associated with CSI and VSI:1. In CSI, commutation is load dependent process.2. Thyristorised current source fed inverter has inherent four quadrant operation.3. In VS! dynamic braking is applicable during ac line failure.4. MOSFET and transistor are more suitable for CSi compared to VSI.Which of the statements given above is/are correct?a)1, 2 and 3 b)3 and 4c)2 only d)1 onlyCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Consider the following statements associated with CSI and VSI:1. In CSI, commutation is load dependent process.2. Thyristorised current source fed inverter has inherent four quadrant operation.3. In VS! dynamic braking is applicable during ac line failure.4. MOSFET and transistor are more suitable for CSi compared to VSI.Which of the statements given above is/are correct?a)1, 2 and 3 b)3 and 4c)2 only d)1 onlyCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Electrical Engineering (EE) tests.
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