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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 :**

⇒ For signal diodes the PIV rating is usually in the range

1 V to 10V

10 V to 30V

30 V to 150V

150 V to 400V

⇒ An open coil has

zero resistance and inductance

zero resistance and high inductance

infinite resistance and zero inductance

infinite resistance and normal inductance

⇒ Two 16 : 1 and one 2 : 1 multiplexers can be connected to form a

16 : 1 multiplexer

32 : 1 multiplexer

64 : 1 multiplexer

8 : 1 multiplexer

⇒ For the network shown below, the Thevenin voltage and R

_{TH}is equal to _______

0 V, 58.82 Ω

0 V, 96.774 Ω

0 V, 3 KΩ

None of these

⇒ An insulator will conduct when the

voltage applied is more than the breakdown voltage

temperature is raised to very high level

either (a) or (b) above

none of the above

⇒ For a 12 pulse operation, the two 6 pulse units are fed by

Y - Y and Y - Y transformers

Δ - Δ and Δ - Δ transformers

Y - Y and Y - Δ transformers

Y - Δ and Y - Δ transformers

⇒ The circuit shown in the figure has 4 boxes each described by inputs P, Q, R and outputs Y, Z

4 bit adder giving P + Q

4 bit subtractor giving P - Q

4 bit subtractor giving Q - P

4 bit adder giving P + Q + R

⇒ Auto correlation function

is an even function of t

is an odd function of t

may be an even or odd function of t

is both an odd and even function of t

⇒ Permittivity has the units of F/m.

TRUE

FALSE

⇒ Which of the following functions would have only odd powers of

*x*in its Taylor series expansion about the point

*x*= 0?

sin (

*x*

^{3})

sin (

*x*

^{2})

cos (

*x*

^{3})

cos (

*x*

^{2})

⇒ If the output current wave shape of class C circuit has a period of 1 μs and a pulse width of 0.006 μs, the duty cycle is

0.06

0.006

0.00006

0.0006

⇒ In a two phase servomotor the two stator windings have a phase difference of

30°

45°

90°

135°

⇒ Pick the odd-one out

Hartley Oscillator

Colpitt oscillator

Clapp oscillator

Weinbridge oscillator

⇒ An SCR is triggered at 40° in the positive half cycle only. The average anode current is 50 A. If the firing angle is changed to 80°, the average anode current is likely to be

50 A

25 A

less than 50 A but more than 25 A

less than 25 A

⇒ The statement ! (

*b*< 5) in C means

*b*= 5

*b*> 5

*b*> = 5

none of the above

⇒ In microwave detector used in laboratory measurements of relative power levels, standing wave ratio is about

0.1

1.25

5

10

⇒ The most commonly used microphone for public address systems is

carbon

crystal

moving coil

condenser

⇒ Inverse Fourier transform of '1' is

U(

*t*)

δ(

*t*)

0'

infinite

⇒ Which one of the following can be used for amplification of microwave energy?

TWT

Magnetron

Reflex klystron

Gunn diode

⇒ Which one of the following is a passive device/Component?

Transformer

Oscillator

Generator

None

⇒ The dependent current source shown in given fig

delivers 80W

absorbs 80W

deliver 40W

absorbs 40W

⇒ Why does a FM radio station perform better than and AM station radiating the same actual power?

FM is immune to noise

AM has only two sidebands while FM has more

FM uses larger bandwidth for large modulation depth.

Capture effects appears in FM.

⇒ Which of the following is unlikely to happen when quantising noise is decreased in PCM?

Increased bandwidth

Increased channel noise

Increased number of standard levels

All of the above

⇒ When the video signal is applied to the picture tube in a TV receiver, the strength of video signal is about

1000 V

200 V

50 V

1 V

⇒

Match the following:

List I (I/P - O/P relation) | List II (Property of the system) | ||
---|---|---|---|

A. | y(n) = x(n) | 1. | Nonlinear, non-causal |

B. | y(n) = x(n^{2}) | 2. | Linear, non casual |

C. | y(n) = x^{2}(-n) | 3. | Linear causal |

D. | y(n) = x^{2}(n) | 4. | Nonlinear causal |

A-1, B-4, C-3, D-2

A-3, B-2, C-1, D-4

A-1, B-2, C-3, D-4

A-3, B-4, C-1, D-2

⇒ Which has the lowest propagation delay time?

ECL

TTL

CMOS

PMOS

⇒ For a series resonant circuit at low frequency circuit impedance is __________ and at high frequency circuit impedance is _______

capacitive, inductive

inductive, capacitive

resistive, inductive

capacitive, resistive

⇒ A 7477 decoder drives

seven-segment display

nickel tape

relays

diode matrix

⇒ Three point tracking is achieved with

double conversion

padder capacitor

double spotting

variable selectivity

⇒ With JFETs cascade means

a common source driving a common gate connection

a common gate driving a common source connection

two FETs connected in parallel

none of the above