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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 :**

⇒ If the plate supply voltage for a plate modulated class C amplifier is E volts, the maximum plate-cathode voltage could be almost as high as

E

E/2

2E

4E

⇒ In microwave system the function of mode filter is

to suppress modes with lower cut off frequencies

to suppress modes with higher cut off frequencies

to change mode of wave transmission

both (b) and (c)

⇒ TE

_{10}mode of propagation of electromagnetic energy in waveguides can be thought of as

three TEM waves travelling along length of wave-guide

One TEM wave travelling along length of wave guide and one TEM wave propagation in the transverse plane

One TEM wave travelling along the length of wave guide and two TEM waves

none of the above

⇒ The Hall constant in Si bar is given by 5 x 10

^{3}cm

^{3}/ coulomb, the hole concentration in the bar is given by

10

^{5}/cm

^{3}

1.25 x 10

^{15}/cm

^{3}

1.5 x 10

^{15}/cm

^{3}

1.6 x 10

^{15}/cm

^{3}

⇒ In a flip flop which input determines the state to which output will transistion?

Control input

Clock input

Both control and clock input

Either control or clock input

⇒ Radar is essentially an echo ranging system

TRUE

FALSE

⇒ Figure of merit is always unity in

AM

SSB-SC

FM

All

⇒ If the frequency is less than the damped frequency in a series- inverter

the distortion of output voltage waveform is low

the distortion of output voltage waveform is high

the distortion of output voltage may be high or low depending on the load impedance

none of the above

⇒ In 8086 the word address is

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the address of most significant byte

either (a) or (b) depending on the word

neither (a) nor (b)

⇒ In deriving ac equivalent circuit for an amplifier circuit we short circuit

all resistors

all transistors

all inductors

all capacitors

⇒ For a diamagnetic material, μ

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TRUE

FALSE

⇒ Which one of the systems described by the following I/P - O/P relations is time invariant

*y*(

*n*) =

*n*

*x*(

*n*)

*y*(

*n*) =

*x*(

*n*) -

*x*(

*n*- 1)

*y*(

*n*) =

*x*(-

*n*)

*y*(

*n*) =

*x*(

*n*) cos 2p

*f*

_{0}

*n*

⇒ In order to obtain triangular pulses at the output of the circuit in the figure, the input should

grounded

a square wave

Triangular wave

Trigger

⇒ Which of the following oscillator circuits uses three capacitors in the phase shifting network?

Hartley

Clapp

Colpitt's

Both (b) and (c)

⇒ Sparking affects amplitude modulation.

TRUE

FALSE

⇒ In standard TTL the totem pole stage refers to

multiemitter input stage

phase splitter

output buffer

open collector output stage

⇒ What is the period of the sinusoidal signal

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10

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1

0

⇒ A single element strain gauge bridge has two fixed resistances R

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*e*. If gauge factor is 2, strain

*e*is

0.0025

0.0035

0.005

0.0075

⇒ A bipolar transistor is a __________ controlled devices whereas a FET is a __________ controlled devices.

current, voltage

current, current

voltage, current

voltage, voltage

⇒ Which of the following is used for generating time varying wave forms?

MOSFET

PIN diode

Tunnel diode

UJT

⇒ In the circuit of figure the d

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will not conduct

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⇒ As per BIS, solid insulators are classified into 6 categories.

TRUE

FALSE

⇒ The minority carrier life time and diffusion constant in a semiconducting material are 100 μs and 100 cm

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⇒ In an ordinary thyristor

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turn off time is more than turn on time

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R

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⇒ A series R-C circuit with R = 3 Ω and X

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0.208333333333333

0.416666666666667

20 A

22-36 A

⇒ In a two terminals network the O.C. voltage measured at the given terminals is 100 V and s.c., currents at the same terminals 5 A. If a load of 80 Ω resistance is connected at the terminals, load current is

0.0416666666666667

1.25 A

0.25

6.25 A

⇒ In floating point representation, the number of bits of mantissa is

10

9

8

7

⇒ In figure, I

_{D}= 4 mA. Then V

_{DS20 V16 V4 V0.4 V}

⇒ Stability factor for S is given by for a fixed bias

1 + β

1 - β

1/β

β - 1