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Q1. | In a purely inductive circuit, the current __________ the voltage by __________ . |

A. | lags, 0° [Wrong Answer] |

B. | leads, 90° [Wrong Answer] |

C. | lags, 90° [Wrong Answer] |

D. | lags, 45° [Correct Answer] |

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Explanation:-
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**Also Read Similar Questions Below :**

⇒ It is desired to display the digit 7 using a seven segment display. The LEDs to be turned on are

*a, b, c*

*b, c, d*

*c, d, e*

*a, b, d*

⇒ In figure, the switch S is initially open and steady state conditions are reached. At

*t*= 0 switch is closed. The initial current through 2C capacito

zero

0.0416666666666667

0.0833333333333333

0.125

⇒ The device 'one shot' has

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one stable state

either 1 or 2 stable states

no stable state

⇒ If temperature is increased, the temperature coefficient of a metal

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decreases

may increase or decrease

remains constant

⇒ The range of a cordless telephone is about

1000 m

500 m

100 m

10 m

⇒ In following figure, the initial contents of the 4-bit serial in parallel out, right shift, shift register as shown in figure are 0110. After 3 clock pulses the contents of the shift register wil

0

101

1010

1110

⇒ The operations which occur most frequently in a computer are

fetch

execute

both (a) and (b)

none of the above

⇒ If the variance σ

_{x}

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*d*(

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*x*(

*n*) -

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*n*- 1) is one-tenth the variance σ

_{x}

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0.95

0.9

0.1

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⇒

**Assertion (A):** When a function *f*(*t*) is represented as exponential Fourier series, the set of complex coefficients F* _{n}* is called frequency spectrum of

*f*(

*t*)

**Reason (R):** Frequency spectrum is also called line spectrum.

Both A and R are correct and R is correct explanation of A

Both A and R are correct but R is not correct explanation of A

A is true, R is false

A is false, R is true

⇒ A sinusoidal voltage is written as

*v*= I

_{m}(R

^{2}+ X

_{C}

^{2})

^{0.5}sin 314

*t*. Its peak value and frequency are

I

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I

_{m}(R

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^{2}

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^{0.5}and 50

0.707 I

_{m}(R

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^{2}

_{C})

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2 I

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⇒ An energy signal has G(

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100

50

20

⇒ If a sound wave has a frequency of 50 Hz, the wavelength is

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⇒ Hall effect is observed in a specimen (metal or semi- conductor) when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is

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⇒ A rectangular waveguide is a

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hollow rectangular walled room carrying electromagnetic wave

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⇒ Consider the following features of 'structures' in C?

- The values of a structure variable can be assigned to another structure variable of the same type using the assignment operator.
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- A variable structure can also be passed to a function.

All

1 and 2 only

1 and 3 only

2 and 3 only

⇒ Which of the following is not a valid arithmetic statement in C?

*x*=

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*x*=

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^{*}

*z*

*x*

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*y*=

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*z*=

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⇒ The divergence of a vector is a scalar, while the curl of a vector is another

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⇒ In a line with finite attenuation

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⇒ A device has two resistances 300 Ω and 200 Ω respectively. The noise voltages due to these two resistance calculated separately are 5.38 μV and 4.38 μV respectively. When both of them are used together, the noise voltage will be

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23.56 μV

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⇒ A radio wave is incident on a layer of ionosphere at an angle of 30° with the vertical. If the critical frequency is, 1.2 MHz, the maximum usable frequency is

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FALSE

⇒ The core of an atom consists of

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⇒ Reflectors and lens antennas are commonly used

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*t*+ 8 sin 200 p

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one junction is reverse biased and two junctions are forward biased.

any of the above depending on the magnitude of reverse bias.

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- Open collector output
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1 only

1 and 2 only

2 and 3 only

1, 2 and 3

⇒ In thermal ohm's law, temperature and power loss are analogous to

V and I respectively of ohm's law

I and V respectively of ohm's law

R and V respectively of ohm's law

I and R respectively of ohm's law