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Q1. | The units of the spectrum obtained be Fourier transforming the covariance function of a stationery Stochastic Process is |

A. | Power per Hz [Wrong Answer] |

B. | energy per Hz [Correct Answer] |

C. | Power per sec [Wrong Answer] |

D. | Energy per second [Wrong Answer] |

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

⇒ A class A transformer coupled power amplifier is to deliver 10 W output. The power rating of transistor should not be less than

5 W

10 W

20 W

40 W

⇒

**Assertion (A):** ∈_{0} has the dimensions of farad per meter.

**Reason (R):** D = ∈_{0}∈_{r} E.

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

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

A is true but R is false

A is false but R is true

⇒ An electron when placed midway between two equal and opposite charges will

remain stationary

oscillate between the charges

be thrown out of the field

spin in the field

⇒ For a given voltage, four heating coils will produce maximum heat when connected

all in parallel

all in series

with two parallel pairs in series

one pair in parallel with the other two in series

⇒ The discone antenna is

a useful direction finding antenna

used as a radar receiving antenna

useful as a UHF receiving antenna

circular polarized like other circularly antenna

⇒ If a function

*f*(

*t*) is an odd, function, its Fourier series

contains only sine terms

contains only cosine terms

contains a constant and sine terms

contains a constant and cosine

⇒ For a two- port reciprocal network, the output open circuit voltage divided by the input current is equal to

B

Z

_{12}

1/

*y*

_{12}

*h*

_{12}

⇒ If the transmission parameters of the given networks are A = C = 1, B = 2 and D = 3, then the value of Z

_{m12/13 Ω13/12 Ω3 Ω4 Ω}

⇒ Which of the following plot can be directly used to determine β?

V

_{CE}versus

*i*

_{C}for constant I

_{B}

V

_{BE}versus

*i*

_{B}for constant V

_{CE}

V

_{CB}versus

*i*

_{C}for constant I

_{B}

All of the above

⇒ In a full bridge inverter, the waveshape of load current depends on

relative values of load parameters R, L and C

relative values of load parameters R and L

relative values of load parameters L and C

gating frequency

⇒ For a transistor amplifier with self biasing network, the following components are used. R

_{1}= 4 kΩ, R

_{2}= 4 kΩ, R

_{C}= 1 kΩ. The approximate value of the stability factor 'S' will be

4

3

2

1.5

⇒ An induction wattmeter can be used for ac only.

TRUE

FALSE

⇒ Which of the following is not correct?

Voltmeter should have a very high resistance

An ammeter should have a very low resistance

A shunt should have a very low resistance

An electronic voltmeter draws appreciable current from source

⇒ Which one is a causal system?

*y*(

*n*) = 3

*x*[

*n*] - 2

*x*[

*n*- 1]

*y*(

*n*) = 3

*x*[

*n*] + 2

*x*[n + 1]

*y*(

*n*) = 3

*x*[

*n*+ 1] + 2

*x*[

*n*- 1]

*y*(

*n*) = 3

*x*[

*n*+ 1] 2

*x*[

*n*- 1] +

*x*[

*n*]

⇒ A clock signal driving a 6-bit ring counter has a frequency of 1 MHz. How long is each timing bit high?

1 ms

2 ms

3 ms

6 ms

⇒ The relative permeability is taken as unity for which of the following?

Air

Cobalt

Vacuum

Bismuth

⇒ The sensitivity of human eyes is maximum at

white portion of spectrum

green portion of spectrum

red portion of spectrum

violet portion of spectrum

⇒ Consider the z-transform X(

*z*) = 5

*z*

^{2}+ 4

*z*

^{-1}+ 3; 0 < |

*z*| < ∞ The inverse transform

*x*[

*n*] is

5δ[

*n*+ 2] + 3δ[

*n*] + 4δ[

*n*- 1]

5δ[

*n*- 2] + 3δ[

*n*] + 4δ[

*n*+ 1]

5

*u*[

*n*+ 2] + 3

*u*[

*n*] + 4

*u*[

*n*- 1]

5

*u*[

*n*- 2] + 3

*u*[

*n*] + 4

*u*[

*n*+ 1]

⇒ For good quality signal transmission all frequency components should have the same transmission delay,

*t*and same phase shift-Φ

_{d}_{s}. What can be said about the statement?

Correct

True from

*t*but not for Φs

_{d}Not true for

*t*but true for Φ

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Both

*t*and Φ

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⇒ A TV picture is to be transmitted over a channel of 6 MH

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50 M

*bps*

100 M

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36 M

*bps*

72 M

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⇒ Which device has one input and many outputs?

Multiplexer

Demultiplexer

Counter

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⇒ The common-drain amplifier, better known as the source follower, has a voltage gain __________ and the output signal is __________ with the input signal.

approaching unity, in phase

approaching unity, out of phase

is very high, in phase

is very high, in reverse phase

⇒ Which one of the following gives maximum probability of error?

ASK

DPSK

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PSK

⇒ Consider the following statements

- Acceptor level lies close the valence band.
- Donor level lies close to the valence band.
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2 and 3 are correct

1 and 3 are correct

1 and 4 are correct

3 and 4 are correct

⇒ Isotropic radiator is one that radiates energy

uniformly in all direction

inside a hollow sphere

in a well defined isotropic direction

none of the above

⇒ In figure the current distribution is represented

curve A

curve B

curve C

curve D

⇒ In 8085, the pairing of registers B, C, D, E, H, L is

B - C, D - E, H - L

B - D, C - E, H - L

B - C, D - L, H - E

B - H, D - E, C - L

⇒ For a paramagnetic material, susceptiblity increases with increasing temperature.

TRUE

FALSE

⇒ In figure, the switch is closed at

*t*= 0. At

*t*= 0

^{+}The value of current supplied by batter

0.0416666666666667

0.0833333333333333

zero

infinity

⇒ Many compounds also exhibit semiconducting properties.

TRUE

FALSE