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Q1. | The spectrum of the white noise and an impulse function is similar in following aspects |

A. | both have similar magnitude spectrum [Correct Answer] |

B. | both have similar magnitude and Phase spectrum [Wrong Answer] |

C. | no relation [Wrong Answer] |

D. | similar phase spectrum [Wrong Answer] |

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

⇒ A dielectric should have poor heat conductivity.

TRUE

FALSE

⇒ In a single phase full wave ac regulator the rms value of load current is 20 A load is purely resistive. Then

average thyristor current will be less than 20 A but rms thyristor current will be more than 20 A

both the average and rms thyristor currents will be less than 20 A

both the average and rms thyristor currents will be more than 20 A

rms thyristor current will be 20 A and average thyristor current will be 10 A

⇒ An RLC series circuit

resonant frequency is high

Q is high

bandwidth is large

Q is low

⇒ Consider the following expressions which indicate the step or impulse response of an initially relaxed system

- [5 - 4
*e*^{-2t}]*u*(*t*) - [
*e*^{-2t}+ 5]*u*(*t*) *d*(*t*) + 8*e*^{-2t}*u*(*t*)*d*(*t*) + 4*e*^{-2t}*u*(*t*)

1 and 3

1 and 4

2 and 4

2 and 3

⇒ The depth of modulation is doubled in FM system then, the power transmitted

increase by factor of 2

increase by factor of 3

increase by factor of 2

none of the above

⇒ Windows automatically starts CD player when one inserts audio CD in CD-ROM drive.

TRUE

FALSE

⇒ The voltage and current distributions on a grounded λ/4 dipole (Marconi antenna) are similar to those of a half wave dipole in space.

TRUE

FALSE

⇒ A bipolar differential amplifier uses a transistor having β

_{0}= 200, I

_{CQ}= 100

*m*A, |A

_{dm}| = 500 and CMRR = 80 dB. The value of R

_{c}and R

_{E}will be respectively __________ .

1.25

*k*Ω, 1.25 MΩ

125

*k*Ω, 1.25 MΩ

1.25 MΩ, 1.25

*k*Ω

3.25

*k*Ω, 3.25 MΩ

⇒ For a series R-L-C circuit tuned at resonant frequency which of the following statements is correct?

The voltage across inductance is greater than applied voltage

The voltage across capacitance is greater than applied voltage

The voltage across both inductance and capacitance is greater than applied voltage

The voltage across both inductance and capacitance is less than applied voltage

⇒ If

*f*(

*t*) = -

*f*(-

*t*) and

*f*(

*t*) satisfies Dirichlet conditions, then

*f*(

*t*) can be expanded in Fourier series having

sine terms only

cosine terms only

cosine and constant terms

sine and constant term

⇒ At room temperature the number of conducting electrons in an intrinsic semiconductor

is almost equal to the number of valence electrons

is about half the number of valence electrons

is small as compared to the number of valence electrons

is a very small fraction of the number of valence electrons

⇒ India's first three-axis stabilised geostationary communication satellite is

Rohini

Aryabhatta

Apple

Bhaskara

⇒ The frequency range of 300 kHz to 3000 kHz is known as

low frequency

medium frequency

high frequency

very high frequency

⇒ A cycloconverter uses

natural commutation

forced commutation

either natural or forced commutation

both natural and forced commutation together

⇒ The intrinsic resistivity of silicon at 300 K is about

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400 Ω-cm

10000 Ω-cm

230000 Ω-cm

⇒ In 3 phase power measurement by two wattmeter method, the reading of one wattmeter is zero. The power factor of load is

1

0.5

0

0.8

⇒ The noise temperature of sky is about __________ °K.

100

273

0

30

⇒ For transmission line load matching over a range of frequencies, it is best to use a

double stub

balun

single stub of adjustable position

broadband directional coupler

⇒ If word length is 16 bits the decimal equivalent of largest number which can be stored is

32767

32766

16383

16384

⇒ In a tape recorder

both record and erase heads have high permeability core

the record head has high permeability core but the erase head has low permeability core

the record head has low permeability core but the erase head has high permeability core

both record and erase heads have low permeability core

⇒ The 8085 instruction LDA FFA is an example of

Direct addressing

Register addressing

Immediate addressing

Register indirect addressing

⇒ If X = 1 in the logic equation [X + Z { Y + (Z + X Y)}] { X + Z (X + Y)} = 1, then

Y = Z

Y = Z

Z = 1

Z = 0

⇒ The inconsistency of Ampere's law can be removed by adding __________ to it.

displacement current density alone.

conduction current density alone.

displacement and conduction current densities.

none of these

⇒ (SI - A)

^{-1}= adj(

*s*I - A)/

*det*(

*s*I - A)

TRUE

FALSE

⇒ An antenna has a gain of 44 dB. Assuming that the main beam of the antenna is circular in cross-section the beamwidth will be

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1.4456°

2.4456°

3.4456°

⇒ What is the address space of 8086 CPU?

One Megabyte

256 Kilobytes

1 K Megabytes

64 Kilobytes

⇒ For most static RAM the write pulse width should be at least

10

*ns*

60

*ns*

300

*ns*

1 μ

*s*

⇒ Selectivity varies with receiving frequency, frequency is raised.

Somewhat better when the receiving frequency is raised

Somewhat better at intermediate frequency

Somewhat worse when the receiving frequency is lowered

Somewhat worse when the receiving frequency is raised

⇒ A cavity resonator is

a hollow metallic enclosure

a hollow enclosure having magnetic material as its walls

a hollow enclosure having dielectric material as its walls

either (b) or (c)

⇒ In an R-C circuit, the impedance is 40 Ω at a frequency of 100 Hz. At 200 Hz the impedance should be

40 Ω

80 Ω

20 Ω

more than 20 Ω but less than 40 Ω