1. An a.c. supply is 70.7 V, 50 Hz. Which of the following statements is false?

Correct Answer is: The peak value of the voltage is 70.7 V

4. State which of the following is false. For a sine wave

Correct Answer is: the average value is 0.637 Ã— r.m.s. value

5. The number of complete cycles of an alternating current occurring in one second is known as

Correct Answer is: the frequency of the alternating current

6. The supply of electrical energy for a consumer is usually by a.c. because

Correct Answer is: transmission and distribution are more easily effected

7. The value normally stated when referring to alternating currents and voltages is the

Correct Answer is: r.m.s. value

8. The value of an alternating current at any given instant is

Correct Answer is: an instantaneous value

9. Which of the following statements is false?

Correct Answer is: A rectifier changes d.c. to a.c.

An a.c. supply is 70.7 V, 50 Hz. Which of the following statements is false?

The peak value of the voltage is 70.7 V

The r.m.s. value of the voltage is 70.7 V

The peak value of the voltage is 100 V

State which of the following is false. For a sine wave

the average value is 0.637 Ã— r.m.s. value

the r.m.s. value is 0.707 Ã— peak value

The number of complete cycles of an alternating current occurring in one second is known as

the frequency of the alternating current

the maximum value of the alternating current

the peak value of the alternating current

The supply of electrical energy for a consumer is usually by a.c. because

transmission and distribution are more easily effected

it is most suitable for variable speed motors

the volt drop in cables is minimal

cable power losses are negligible

Which of the following statements is false?

A rectifier changes d.c. to a.c.

It is cheaper to use a.c. than d.c.

Distribution of a.c. is more convenient than with d.c. since voltages may be readily altered using transformers

An alternator is an a.c. generator

Alternating Current MCQ Multiple Choice Questions Answers

Alternating Current Multiple Choice Questions (MCQs) are essential for students and exam aspirants to test and enhance their understanding of AC circuits and related concepts. These questions are designed to help you prepare effectively for exams, interviews, and concept revision.

About Alternating Current MCQ Questions

Alternating Current (AC) MCQs cover a wide range of topics including the fundamentals of AC circuits, alternating voltage and current, power in AC circuits, and the behavior of different components like resistors, capacitors, and inductors. These questions are crafted to ensure a comprehensive understanding of AC principles and their practical applications.

Why Practice Alternating Current Objective Questions?

Practicing Alternating Current objective questions offers several benefits. It helps students solidify their knowledge, identify weak areas, and improve problem-solving skills. For competitive exam aspirants and interview candidates, these MCQs provide valuable practice and boost confidence. Regular practice ensures that you are well-prepared for any assessment and can apply your knowledge effectively.

Who Should Use These MCQs?

Students preparing for school or college exams
Competitive exam aspirants
Candidates preparing for interviews

Alternating Current MCQ Multiple Choice Questions Answers for Practice

1. An a.c. supply is 70.7 V, 50 Hz. Which of the following statements is false?

2. An alternating current completes 100 cycles in 0.1 s. Its frequency is

3. An alternating voltage of maximum value 100 V is applied to a lamp. Which of the following directvoltages, if applied to the lamp, would cause the lamp to light with the same brilliance?

4. State which of the following is false. For a sine wave

5. The number of complete cycles of an alternating current occurring in one second is known as

6. The supply of electrical energy for a consumer is usually by a.c. because

7. The value normally stated when referring to alternating currents and voltages is the

8. The value of an alternating current at any given instant is

9. Which of the following statements is false?

About Alternating Current MCQ Questions

Why Practice Alternating Current Objective Questions?

Who Should Use These MCQs?

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Alternating Current MCQ Multiple Choice Questions Answers for Practice

1. An a.c. supply is 70.7 V, 50 Hz. Which of the following statements is false?

2. An alternating current completes 100 cycles in 0.1 s. Its frequency is

3. An alternating voltage of maximum value 100 V is applied to a lamp. Which of the following directvoltages, if applied to the lamp, would cause the lamp to light with the same brilliance?

4. State which of the following is false. For a sine wave

5. The number of complete cycles of an alternating current occurring in one second is known as

6. The supply of electrical energy for a consumer is usually by a.c. because

7. The value normally stated when referring to alternating currents and voltages is the

8. The value of an alternating current at any given instant is

9. Which of the following statements is false?

About Alternating Current MCQ Questions

Why Practice Alternating Current Objective Questions?

Who Should Use These MCQs?

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