 |
| MCQ Questions for Class 12 Physic Chapter 7 Alternating Current With Answers PDF |
MCQ Questions for Class 12 Physic Chapter 7 Alternating Current With Answers PDF: Multiple Choice Questions (MCQs) are a popular method of testing a student's understanding of a particular subject. They are widely used in school and college exams as they are a quick and efficient way to assess a student's knowledge.
An MCQ Questions for Class 12 Physic Chapter 7 Alternating Current consists of a question or statement, followed by several answer options, of which the student must choose the correct one. The answer options are usually presented as a list of possible choices, such as A, B, C or D.
MCQ Questions for Class 12 Physic Chapter 7 Alternating Current With Answers PDF
- What is the frequency of an alternating current? a) The number of oscillations per second b) The number of oscillations per minute c) The number of oscillations per hour d) The number of oscillations per day
Answer: A
- What is the unit of frequency? a) Amperes b) Volts c) Ohms d) Hertz
Answer: D
- What is the difference between an alternating current and a direct current? a) An alternating current changes direction, while a direct current flows in only one direction b) An alternating current has a higher voltage, while a direct current has a lower voltage c) An alternating current has a higher frequency, while a direct current has a lower frequency d) An alternating current can be used in AC motors while direct current can be used in DC motors
Answer: A
- What is the equation for instantaneous value of alternating current? a) I = I0sin(2πft) b) I = I0cos(2πft) c) I = I0tan(2πft) d) I = I0cot(2πft)
Answer: A
- What is the RMS value of an alternating current? a) The average value of the current over a complete cycle b) The peak value of the current c) The minimum value of the current d) The maximum value of the current
Answer: A
- What is a sine wave? a) A waveform that oscillates between positive and negative values b) A waveform that oscillates between zero and positive values c) A waveform that oscillates between zero and negative values d) A waveform that oscillates between positive and zero values
Answer: B
- What is the phase difference between two alternating currents? a) The difference in the time at which the currents reach their maximum value b) The difference in the time at which the currents reach their minimum value c) The difference in the time at which the currents reach their zero crossing point d) The difference in the time at which the currents reach their peak value
Answer: A
- What is the power factor of an alternating current circuit? a) The ratio of actual power to apparent power b) The ratio of actual power to reactive power c) The ratio of apparent power to reactive power d) The ratio of actual power to total power
Answer: A
- What is a three-phase system? a) A system in which three alternating currents of the same frequency and amplitude, but with different phase angles, are used b) A system in which three alternating currents of different frequency and amplitude, but with the same phase angles, are used c) A system in which three direct currents of the same voltage and current, but with different phase angles, are used d) A system in which three direct currents of different voltage and current, but with the same phase angles, are used
Answer: A
- What is a transformer? a) A device that is used to transfer electrical energy from one circuit to another through electromagnetic induction b) A device that is used to convert alternating current to direct current c) A device that is used to increase or decrease the voltage of an alternating current d) A device that is used to measure the frequency of an alternating current
Answer: C
Benefits of MCQ Questions for Class 12 Physic Chapter 7 Alternating Current
One of the benefits of using MCQ Questions for Class 12 Physic Chapter 7 Alternating Current is that they are easy to grade. The correct answer is already provided, so the teacher or exam proctor simply needs to check that the student has chosen the correct option. This makes MCQ Questions for Class 12 Physic Chapter 7 Alternating Current more efficient than open-ended questions, which require more time and effort to grade.
Another benefit of MCQ Questions for Class 12 Physic Chapter 7 Alternating Current is that they can test a wide range of knowledge, including factual information, concepts, and problem-solving skills. They can also be used to test a student's ability to apply knowledge to new situations, rather than just recall information.
Conclusion of MCQ Questions for Class 12 Physic Chapter 7 Alternating Current With Answers PDF
In conclusion, MCQ Questions for Class 12 Physic Chapter 7 Alternating Current are a popular method of testing a student's understanding of a particular subject. They are widely used in school and college exams as they are a quick and efficient way to assess a student's knowledge. But to minimize the drawbacks, it is important to write good MCQs and use a variety of question types. They can test a wide range of knowledge, including factual information, concepts, and problem-solving skills, but they should not be the only method of assessment, it's important to use different types of questions to evaluate a student's understanding of a subject.
0 Comments:
Post a Comment