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Q1. | For an N-point FFT algorithm with N = 2^{m} which one of the following statements is TRUE? |

A. | It is not possible to construct a signal flow graph with both input and output in normal order [Wrong Answer] |

B. | The number of butterflies in the m^{th} stage is N/m [Wrong Answer] |

C. | In-place computation requires storage of only 2N node data [Wrong Answer] |

D. | Computation of a butterfly requires only one complex multiplication [Correct Answer] |

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

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

minimum

maximum

uniform

zero

⇒ Electrostatic voltmeter is suitable only for low voltages.

TRUE

FALSE

⇒ In telephone systems the relation between load r, number of calls initiated during a specified interval λ and average duration of a call (

*h*) is

r = λ

*h*

r = λ

*h*

^{2}

λ = r

*h*

h = λr

⇒ The percentage saving in power when the carrier and one of the sidebands are suppressed in an AM wave modulated to a depth of 100% will be nearly

0.5

0.66

0.75

0.83

⇒ In which one of the following types of analog to digital converts the conversion time is practically independent of the amplitude of the analog signal?

The dual slope integrating type

Successive approximation type

Counter ramp type

Tracking type

⇒ If L [

*f*(

*t*)] = F(

*s*), L

*f*(

*t*- T)

*e*

^{sT}F(

*s*)

*e*

^{-sT}F(

*s*)

F(

*s*) -

*e*

^{-sT}

F(

*s*) +

*e*

^{-sT}

⇒ The smallest change in sound intensity that can be detected by human ear is __________ dB.

1

3

10

20

⇒ Which has the highest power dissipation per gate?

ECL

TTL

CMOS

PMOS

⇒ Which of the following methods is used for solving differential equations numerically?

Runge-Kutta method

Gauss-elimination method

Newton-Raphson method

Any one of these

⇒ In figure, the voltmeter is ideal. The transformer has two identical windings with perfect coupling. The reading of voltmete

440 V

220 V

110 V

zero

⇒ A single mode fibre not suffer from which type of dispersion?

Waveguide dispersion

Material dispersion

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⇒ Fermi level in intrinsic semiconductor is at the centre of forbidden energy band.

TRUE

FALSE

⇒ In which of the following 8085 instructions is the 8 bit number in accumulator adjusted to form two four bit BCD numbers

`DAD `*rp*

`DAA`

`DCX `*rp*

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⇒ Consider the following in C

- An arithmetic operation between integer and an integer gives integer as the result.
- An arithmetic operation between a real and a real constant gives real constant as the result.
- An arithmetic operation between an integer constant and a real constant is not valid.

All

1 and 2 only

2 and 3 only

1 and 3 only

⇒ The sum of two or more arbitrary sinusoidal is

always periodic

periodic under certain conditions

never periodic

periodic only if all the sinusoidals are identical in frequency and phase

⇒ A leaky dielectric has ∈

_{r}= ∈

_{r}

^{'}-

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_{r}

^{"}. If a field

*E*is applied, the current component in phase with E is proportional to ∈

_{r}

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FALSE

⇒ 100101

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37

21

17

⇒ If F

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*t*) =

F

_{n}

*e*

^{-jω}

_{0}

^{t}

F

_{n}

*e*

^{jω}

_{0}

^{t}

F

_{n}

*e*

^{jnω}

_{0}

^{t}

F

_{n}

*e*

^{-jnω}

_{0}

^{t}

⇒ A trimmer is basically a

insulator

inductor

capacitor

variable resistor

⇒

**Assertion (A):** In direct addressing the address of operand is specified in the instruction.

**Reason (R):** Direct addressing is also called absolute addressing.

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

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

A is correct R is wrong

A is wrong R is correct

⇒ The two numbers represent in signed 2's complement form are P = 11101101 and Q = 111001110. If Q subtracted from P, the value obtained in signed 2's complement form is

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⇒ Find equivalent resistance. Each resistance is l &Om

5/12 Ω

5/6 Ω

6/5 Ω

6/10 Ω

⇒ In 8085 microprocessor the value of the most significant bit of the result following the execution of any arithmetic or Boolean instruction is stored in

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the auxiliary carry status flag

sign status flag

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⇒ Which circuit is called swamped amplifier?

CC

CE

CB

Both (a) and (b)

⇒ In metals, the flow of current is due to

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electrons and ions

⇒

Match the following:

List I (Types of transmission structure) | List II (Modes of propagation) | ||
---|---|---|---|

A. | Strip line | 1. | Quasi TEM |

B. | Hollow rectangular waveguide | 2. | Pure TEM |

C. | Microstrip | 3. | TE/TM |

D. | Corrugated waveguide | 4. | Hybrid |

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

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

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

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

⇒ The discone antenna is

used in UHF range

circularly polarized

used in radar

used as a direction finding antenna

⇒ A rectangular waveguide measures 3 x 4.5 cm internally and has a 10 GHz signal propagated in it. Calculate the guide wavelength for dominant mode.

13.5 m

3 m

88/3 m

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⇒ Sound waves are electromagnetic waves.

TRUE

FALSE

⇒ The main advantage of TDM over FDM is

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less complicated in hardware than FDM

better SNR

required filter