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Q1. | Which of the following is true? |

A. | The poisson distribution is limiting case of binomial distribution. [Wrong Answer] |

B. | In symmetrical distribution, the mean, median and mode coincide. [Wrong Answer] |

C. | Regression is the estimation or production of unknown values of one variables from known values of another variable. [Wrong Answer] |

D. | All are true. [Correct Answer] |

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

⇒ If carrier is modulated by a digital bit stream having one of the possible phases of 0°, 90°, 180°, and 270°, then modulation is called

BPSK

QPSK

QAM

MSK

⇒ Some possible disadvantages of high level modulation in TV transmitters are

- Video monitor has to supply high video voltages upto several hundred volts into highly capacitive loads drawing high current at video frequencies
- The grid modulated stage presents a varying load to its driver
- The linearity and high video driving power present design problems

1 only

1 and 2 only

1, 2 and 3

2 and 3 only

⇒ Some ADCs are

- Parallel
- Updown
- Single slope
- Dual slope
- Successive approximation
- Stair step

1 only

1, 3, 4

1, 2, 3

1, 5, 6

⇒ The electric flux and field intensity inside a conducting sphere is

minimum

maximum

uniform

zero

⇒ In a single phase semi-converter the number of thyristors is

16

8

4

2

⇒ For the discrete time system of the given fig

*y*- 0.5

_{k}*y*

_{k}_{ - 1}- 0.25

*y*

_{k}_{ - 2}=

*u*

_{k}*y*+ 0.5

_{k}*y*

_{k}_{ - 1}- 0.25

*y*

_{k}_{ - 2}=

*u*

_{k}*y*- 0.5

_{k}*y*

_{k}_{ - 1}+ 0.25

*y*

_{k}_{ - 2}=

*u*

_{k}*y*+ 0.5

_{k}*y*

_{k}_{ - 1}+ 0.25

*y*

_{k}_{ - 2}=

*u*

_{k}⇒ Which synthesis procedure requires the use of mutual inductance?

Foster's synthesis

Cauer synthesis

Bott-Duffin synthesis

Brune's synthesis

⇒

*TE*

_{01}mode of propagation of electromagnetic energy

is merely the TE

_{10}mode rotated 90°

is merely the TE

_{10}mode rotated 180°

is the same as TE

_{10}mode

either (b) or (c)

⇒ In 8085 microprocessor, the RST 5.5 interrupt service routine start from location

0020 H

0024 H

0028 H

002 CH

⇒ Burden of an instrument transformer is expressed in

A

V-A

Ω

watt

⇒ A total of 16 equally probable events exist. If it is required to select one out of them, the number of required bits is

2

4

3

5

⇒ A 400 W carrier is modulated to a depth of 75 percent. The total power in modulated wave will be

38.5 W

400 W

512.5 W

615.5 W

⇒ When a complex signals is used to frequency modulate a carrier, the resulting sideband distribution is

symmetrical about the carrier

not necessarily symmetrical about the carrier

decided by the predominant sidebands

none of the above

⇒ Consider the following statements regarding sources or error in a Q-meter:

- If a coil with resistance R is connected in direct measurement mode and if the residual resistance of Q-meter is 0.1 R, then the measure Q of the coil would be 1.1 times the actual Q.
- If the inductance to be measured is less than 0.1 mH, the error due to presence of residual inductance cannot be neglected.
- The presence of distributed capacitance in a coil modifies the effective Q of the coil.

1, 2 and 3

1 and 2 only

2 and 3 only

1 and 3 only

⇒ From the noise point of view, bandwidth should

be large

not be too large

should be as large as possible

should be infinite

⇒ A cut set schedule shows

incidence of branches to loops

incidence of branches to nodes

incidence of nodes to loops

none of the above

⇒ A dominant wave is characterised by which of the following?

No attenuation

Lowest cut off wavelength

Highest cut off wavelength

All of the above

⇒ A wire has a resistance R ohm. If another wire of the same material and same weight has double the diameter (as compared to the first wire), the resistance of the second wire will be

0.5 R

0.25 R

0.125 R

R/16

⇒ In a circular waveguide with radius

*r*, the dominant mode is

TM

_{01}

TE

_{01}

TM

_{11}

TE

_{11}

⇒ Two currents have the same peak value. Wave 1 is sinusoidal and wave 2 is rectangular. The ratio of their heating effects are

0.0423611111111111

1 : 2

0.0430555555555556

0.000711805555555555

⇒ If PRIN = 200.0 and BINT = 0.0525 the result of expression

`INCOME = PRIN * (1 + BINT)`

will be210

210.5

210.5

210.5

⇒ Calculate wave impedance for TE mode

(377)Ω

226 Ω

∞

629 Ω

⇒ A TV remote control works on the principle of

pulse code modulated ultra violet light

pulse code modulated infrared light

demodulation

either (a) or (b)

⇒ A bridge rectifier circuit has input of 50 Hz frequency. The load resistance is R

_{L}and filter capacitance is C. For good output wave shape, the time constant R

_{L}C should be at least equal to

10 ms

20 ms

50 ms

100 ms

⇒ For stable network the real parts of poles and zeros of driving point functions must be

negative

negative or zero

zero

positive

⇒ One XOR gate can work as

one bit magnitude comparator

two bit magnitude comparator

either (a) or (b)

neither (a) nor (b)

⇒ In a 7 segment display, LEDs

*b*and

*c*lit up. The decimal number displayed is

9

7

3

1

⇒ In a JK flip flop toggle means

set Q = 1 and Q = 0

set Q = 0 and Q = 1

change the output to the opposite state

no change in output

⇒ The current due to thermionic emission is proportional to

T

T

^{2}

T

^{3}

T

^{4}

⇒ The filter in figure, uses ideal op-amp. I

low pass filter

high pass filter

band pass filter

band stop filter