MEDIUM
JEE Main
IMPORTANT
Earn 100

The r.m.s. voltage of the waveform shown is:

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Important Questions on Alternating Current

HARD
JEE Main
IMPORTANT

The output current versus time curve of a rectifier is shown in the figure. The average value of output current in this case is, 

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MEDIUM
JEE Main
IMPORTANT

The current i in an inductance coil varies with time t according to following graph,

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Which one of the following plots shows the variations of voltage in the coil?

MEDIUM
JEE Main
IMPORTANT

Two sinusoidal voltages of the same frequency are shown in the diagram. What is the frequency and the phase relationship between the voltages?

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MEDIUM
JEE Main
IMPORTANT

The voltage across a pure inductor is represented by the following diagram.

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Which one of the following diagrams will represent the current?

MEDIUM
JEE Main
IMPORTANT

In pure inductive circuit, the curves between frequency f and reciprocal of inductive reactance 1XL is

MEDIUM
JEE Main
IMPORTANT

The graphs given below depict the dependence of two reactive impedances X1 and X2 on the frequency of the alternating emf applied individually to them. We can then say that

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EASY
JEE Main
IMPORTANT
Which of the following curves correctly represents the variation of capacitive reactance XC with frequency f?
EASY
JEE Main
IMPORTANT

Is the following circuit correctly drawn? (value of current in each branch is given in amperes)

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