A level AC Theory Quiz 1

16 QuestionsMultiple ChoiceFree Practice

About this quiz

This A level AC Theory Quiz 1 quiz contains 16 multiple choice questions designed to help you revise and test your A level AC Theory Quizzes knowledge. Select an answer for each question and click “Submit Answer” to see instant feedback. Take your time and try to score as high as possible!

Description

In this quiz, we will be looking at AC Theory which stands for Alternating current theory. Alternating current is used in the industry of transportation and production of electricity. We have seen that almost every household in the world is powered by AC. AC is therefore a more popular current when it comes to powering electric motors, which are devices that convert electrical energy into mechanical energy. You will find so many interesting questions in Physics here which will help prepare you for any challenge on AC theory.

To begin, let us ask ourselves, what is AC current?

Alternating Current (AC) is simply a type of electrical current, in which the direction of flow of the electrons switches back and forth at regular intervals or cycles.

Therefore AC theory is concerned with the mathematical analysis of the steady-state behavior of electrical circuits in which the currents and voltages vary periodically with respect to time. Contrary to AC current, we have DC (Direct current) which flows only in one direction. Examples of products that are produced using AC are flashlights, cell phones, and even modern-day televisions.

Many quizzes on other subjects can be found by clicking here. For more knowledge on current, Check on Current E..Now test yourself by taking the quiz, which will teach you even more.
Good luck! 

Progress0 / 16 answered
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Question 1 of 16

The series and parallel resonance on L-C circuit' differs in that

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Question 2 of 16

In each of the three coils of a three phase generator, an alternating voltage having an r.m.s. value of 220 V is induced. Which of the following values is indicated by the voltmeters?

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Question 3 of 16

In a highly capacitive circuit the

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Question 4 of 16

The power factor at resonance in R-L-C parallel circuit is

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Question 5 of 16

 In a R-L-C circuit

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Question 6 of 16

In an AC. circuit, a low value of kVAR compared with kW indicates

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Question 7 of 16

Which of the following statements pertains to resistors only?

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Question 8 of 16

The power factor of a D.C. circuit is always

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Question 9 of 16

The form factor is the ratio of

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Question 10 of 16

Pure inductive circuit takes power from the A.C. line when

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Question 11 of 16

The apparent power drawn by an A.C. circuit is 10 kVA and active power is 8 kW. The reactive power in the circuit is

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Question 12 of 16

In a sine wave the slope is constant

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Question 13 of 16

The r.m.s. value of pure cosine function is

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Question 14 of 16

In a pure capacitive circuit if the supply frequency is reduced to 1/2, the current will

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Question 15 of 16

Capacitors for power factor correction are rated in

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Question 16 of 16

The r.m.s. value of a sinusoidal A.C. current is equal to its value at an angle of ________ degrees.