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Q1. | The response of a function is decided by |

A. | the location of its zeros [Wrong Answer] |

B. | the location of its poles [Wrong Answer] |

C. | both (a) and (b) [Correct Answer] |

D. | none of the above [Wrong Answer] |

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

⇒ Phase modulation is commonly-used for data transmission mainly because

phase can be varied from + 180° to 180°

it is resistant to the effects of noise

demodulation is very easy

it gives highest data rates that can be transmitted over a given channel

⇒ Consider an input

*x*(

*t*) as sh

-2 <

*t*< 6

0 <

*t*< 11

-2 <

*t*< 5

2 <

*t*< 6

⇒ Low frequency boost can be easily compensated by

attenuating the frequencies from 0 to 1.25 MHz

using an appropriate de-emphasis circuit in the receiver

using an appropriate pre-emphasis circuit in the transmitter

none

⇒ The simplest mixer circuit for public address system uses

fixed resistances

variable resistances

inductances

capacitances

⇒ In standard TTL the totem pole stage refers to

multiemitter input stage

phase splitter

output buffer

open collector output stage

⇒ For a superconductor, magnetisation M in a field H is

extremely small

- H

- I

zero

⇒ For a transistor to have-a larger β it must have and a

close to zero

close to 0.5

close to unity

nearly infinite

⇒ In a BJT CE amplifier circuit the value of coupling capacitor should be such that

its reactance is small for the lowest frequency in the input and output

its reactance is high for the lowest frequency in the input and output

its reactance is zero for the lowest frequency in the input and output

its reactance is infinite for the lowest frequency in the input and output

⇒ The number of interrupt lines in 8085 is

2

3

4

5

⇒ If ω

_{0}is the angular frequency of rotation of electron in the absence of magnetic field, the angular frequency ω, when a magnetic field B is acting is ω ≅ ω

_{0}+ (

*e*/2

*m*)B.

TRUE

FALSE

⇒ The system in the given figur

type 0 system

type 1 system

type 2 system

type 3 system

⇒ In a full wave voltage doubler circuit, the input frequency is 560 Hz. The ripple frequency is

25 Hz

50 Hz

100 Hz

200 Hz

⇒ For a junction FET in the pinch off region, as the drain voltage is increased, the drain current

becomes zero

abruptly decrease

abruptly increases

remains constant

⇒ An LED has a rating of 2 V and 10 mA. It is used along with 6V battery. The range of series resistance is

0 to 200 Ω

200 - 400 Ω

200 Ω and above

400 Ω and above

⇒ A silicon wafer has 100 nm of oxide it and is inserted in a furnace at a temperature above 1000°C for further oxidation in dry oxygen. The oxidation rate

is independent of current oxide thickness and temperature

is independent of current oxide thickness but depends on temperature

slows down as the oxide grows

is zero as the existing oxide prevents further oxidation

⇒ If a sample of germanium and a sample of silicon have the same impurity density and are kept at room temperature

both will have equal value of resistivity

both will have equal negative resistivity

resistivity of germanium will be higher than that of silicon

resistivity of silicon will be higher than that of germanium

⇒ 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

⇒ A function is given

*f*(

*t*) = sin

^{2}

*t*+ cos

^{2}

*t*. Which of the following is true?

f has frequency components at 0 and 1/2p Hz

f has frequency components at 0 and 1/p Hz

f has frequency components at 1/2p and 1/p Hz

f has frequency components at 0, l/2p and 1/p Hz

⇒ The circuit shown in figure

low pass filter

high pass filter

band pass filter

band stop filter

⇒ Consider the following statements:

- The positiveness of coefficients of characteristic equation is necessary as well as sufficient condition for stability of first and second order systems.
- The positiveness of coefficients of characteristic equation ensures negativeness of real roots but is not sufficient condition for stability of third and higher order systems.

only 1 is correct

both 1 and 2 are correct

only 2 is correct

both are wrong

⇒ Some words like READ, WRITE, STOP etc. cannot be used as variable names in Fortran 77.

TRUE

FALSE

⇒ Curl of gradient A is

∇ x (∇A) = 1

∇ x (∇A) = ∞

∇ x (∇A) = 0

∇ x (∇A) = - ∞

⇒ Consider the following statement in B

200, 250, 150 respectively

150, 200, 250 respectively

250, 200, 150 respectively

200, 150, 250 respectively

⇒ If A = 16 ∠64°, (A)

^{0.5}is

4∠64°

4∠8°

4∠128°

4∠32°

⇒ The voltage and current distributions on a grounded λ/4 dipole (Marconi antenna) are similar to those of a half wave dipole in space.

TRUE

FALSE

⇒ Wagner earthing device is used to eliminate error due to

electromagnetic coupling

electrostatic coupling

both electrostatic and electromagnetic coupling

either (a) or (b)

⇒ The function of a choke in a fluorescent lamp is

at the time of starting only

during the working of time but not at starting time

both at the time of starting and during working

none of the above

⇒ In Z

_{RC}(

*s*) = 0 at

*s*=∞, the last element in second Foster realization will be

R

C

R and C in series

R and C in parallel

⇒ The image frequency of a superheterodyne receiver is

created within the receiver itself

not rejected by IF tuned circuits

independent of the frequency of tuning

due to insufficient adjacent channel rejection

⇒ In any network of linear impedances the current flowing at any point equal to algebric sum of currents caused to flow at that point by each of the emf taken separately with all other emfs reduced to zero. The statement represents.

KCL

Norton's theorem

Thevenin's theorem

Superposition theorem