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Q1. | For a Gaussian process, auto-correlation sequence also implies that |

A. | statistical independence [Wrong Answer] |

B. | statistical dependence [Correct Answer] |

C. | ergodic process [Wrong Answer] |

D. | all [Wrong Answer] |

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

⇒ Zoning is used with a dielectric antenna in order to

permit pin-point focusing

reduce the bulk of the lens

increase the bandwidth of the lens

correct the curvature of the wavefront from a horn that is too short

⇒ In the network of figure, the voltage drops across R

_{1}, R

_{2}, R

_{3}are 6 V, 8 V and 12 V with polarities as shown. The value of R

_{312 Ω8 Ω5 Ω3 Ω}

⇒ Which pair is correctly matched?

Symmetrical two port AD - BC = 1

Reciprocal two port

*z*

_{11}=

*z*

_{12}

Inverse hybrid parameter A, B, C, D

hybrid parameter (V

_{1}, I

_{2}) =

*f*(I

_{1}, V

_{2})

⇒ A circuit has two branches in parallel and each branch has only one element. The applied voltage and source current are

*v*= 200 sin (200

*t*+ 30°) and

*i*= 50 sin (200

*t*+ 50°). If one branch has capacitor, the other branch contains

resistance

inductance

capacitance

resistance or capacitance

⇒ In the case of an amplifier, the normalised voltage gain is given

*f*

_{P}>>

*f*

_{0}

*f*

_{P}=

*f*

_{0}

*f*

_{P}<<

*f*

_{0}

*f*

_{0}= 2

*f*

_{P}

⇒ For the power amplifier circuit shown below, the maximum power dissipated by both output transisto

9.66 W

30.11 W

31.66 W

33.66 W

⇒ The most important set of specifications of transformer oil includes

dielectric strength and viscosity

dielectric strength and flash point

flash point and viscosity

dielectric strength, flash point and viscosity

⇒ The following circuit is implementation of

- Sum of full adder
- Carry of half adder
- Difference of full subtractor <

(i) only

(iii) only

(ii) only

(i) and (ii)

⇒ A sample of N-type semiconductor has electron density of 6.25 x 10

^{18}/cm

^{3}at 300k. If the intrinsic concentration of carriers in this sample is 2.5 x 10

^{13}/cm

^{3}at this temperature the hole density works out to be

10

^{6}/cm

^{3}

10

^{8}/cm

^{3}

10

^{10}/cm

^{3}

10

^{l2}/cm

^{3}

⇒ The symbol in figure is

UJT

PUT

SCS

SBS

⇒ The tuned circuit of the oscillator in a simple AM transmitter employs a 50 H coil and a 1 nanofarad capacitor. If the oscillator output is the carrier frequency will be

448 kHz

555 kHz

625 kHz

712 kHz

⇒ Eddy current loss is

proportional to frequency

independent of frequency

proportional to (frequency)

^{2}

proportional to (frequency)

^{3}

⇒ A TV receiver has 20 kV EHT supply and total beam current (for 3 electron guns) of 1500 μA. The power handled by IHVT is

3 W

30 W

300 W

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⇒ A half wave diode rectifier has a capacitance input filter. If input voltage is V

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*t*, PIV is

V

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2 V

_{m}

3 V

_{m}

4 V

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⇒ A voltage gain of a CE amplifier connected in collector to base configuration is 50. Collector to base resistor R

_{F}= 1 kΩ, R

_{C}= 4Ω, the O/P resistance R

_{0}=?

800 Ω

813 Ω

817 Ω

819 Ω

⇒

**Assertion (A):** Acceptor extrinsic semiconductor has higher conductivity than intrinsic semiconductor.

**Reason (R):** Addition of *p*-type impurity produces an allowable discrete energy level just above valence band.

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

⇒ Almost all high level languages have provision for logical operations.

TRUE

FALSE

⇒ A first-order system has a time constant t. For unit ramp input, the steady state error is

t

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t

t

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⇒ In figure the phase

will be 90° at ω = 0 and 0° at ω = ∞

will be 0° at ω = 0 and 90° at ω = ∞

will be 45° at ω = 0 and 0° at ω = ∞

will be 45° at ω = 0 and 90° at ω = ∞

⇒ A resistor of 10 kΩ has an rms noise voltage of 1 mV under a certain set of conditions. A resistor of 20 kΩ under the same conditions will have an rms noise voltage of

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2 mV

1.414 mV

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⇒ The resolution of a wire wound potentiometer is about

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0.001

0.01

0.05

⇒ Transformer oil is

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refined mineral oil

mixture of vegetable and mineral oil

none of the above

⇒ Consider the amplitude modulated (AM) signal

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_{c}t_{m}

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*For demodulating the signal using envelope detector, the minimum value of A*

_{c}t_{c}should be

2

1

0.5

0

⇒ The number of spectral component of a cosine wave is

1

0

2

4

⇒ Which of the following statement regarding link loss for a satellite is wrong?

For fixed antenna, it is inversely proportional to

*f*

^{2}

For fixed frequency, it is inversely proportional to the product of the antenna aperture areas

For a given satellite operating at a given frequency, it is inversely proportional to

Loss in down-link is negligible as compared to that in uplink

⇒ Which quantity controls the effectiveness of LED in emitting light?

Applied voltage

Current

Extent of doping

Temperature

⇒ A reactance function is always a quotient of

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odd to even polynomials

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even to even polynomials

⇒ In a cable with ∈

*= 4, the wave velocity is*

_{r}3 x 10

^{8}m/s

0.75 x 10

^{8}m/s

1.5 x 10

^{8}m/s

10

^{8}m/s

⇒ A sequential multiplexer is connected as shown in figure. Each time the multiplexer receives the clock, it switches to the next channel from 6 to 1. If the input signals a

8 kHz

50 kHz

20 kHz

10 kHz

⇒ Avalanche beakdown is primarily dependent on the phenomenon of

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collision

recombination

ionization