Question is ⇒ A band limited signal is sampled at the Nyquist rate. The signal can be recovered by passing the samples through, Options are ⇒ (A) an RC filter, (B) an envelope detector, (C) a PPL, (D) an ideal low pass filter with the appropriate bandwidth, (E) , Leave your comments or Download question paper.

Question is ⇒ A band limited signal is sampled at the Nyquist rate. The signal can be recovered by passing the samples through, Options are ⇒ (A) an RC filter, (B) an envelope detector, (C) a PPL, (D) an ideal low pass filter with the appropriate bandwidth, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	A band limited signal is sampled at the Nyquist rate. The signal can be recovered by passing the samples through
A.	an RC filter [Wrong Answer]
B.	an envelope detector [Wrong Answer]
C.	a PPL [Wrong Answer]
D.	an ideal low pass filter with the appropriate bandwidth [Correct Answer]
View Answer 2 -1 Explanation:- Answer : D Discuss it below : !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

Previous question Next question

Also Read Similar Questions Below :

⇒ Refer to the NAND and NOR latches shown in the figure. The inputs (P₁, P₂) for both the latches are first made (0, 1) and then, after a few seconds, made (1, 1). The corresponding stable outputs (Q₁, Q₂)
NAND: first (0, 1) then (0, 1) NOR: first (1, 0) then (0, 0)
NAND: first (1, 0) then (1, 0) NOR: first (1, 0) then (1, 0)
NAND: first (1, 0) then (1, 0) NOR: first (1, 0) then (0, 0)
NAND: first (1, 0) then (1, 1) NOR: first (0, 1) then (0, 1)

⇒ The v-i characteristics of a diode may be linear or non linear.
TRUE
FALSE

⇒ A sheet of bakelite is inserted between the plates of an air capacitor. The capacitance will
increase
decrease
remain the same
may increase or decrease

⇒ In laboratory experiment the output from reflex klystron is moderated by square wave because
it is easy to generate a square wave
crystal diode operates in square law region of i-v characteristics
it prevents frequency modulation
detector circuit is less complicated

⇒ If a EM wave propagating in z direction then
component of EM wave will exist in z direction
component of EM wave will not exist in z direction
component of EM wave will exist in y direction
component of EM wave will exist in x direction

⇒ Find I in 4 Ω resis
0.0416666666666667
0.5 A
0.75 A
0.95 A

⇒ The relation between the apparent power, actual power and reactive power is given by
Apparent power = actual power + reactive power
Apparent power = actual power - reactive power
Apparent power = (actual power)² - (reactive power)²
Apparent power = (actual power)² + (reactive power)²

⇒ A multivibrator generates
sinusoidal waveforms
non-sinusoidal waveforms
both (a) and (b)
none of the above

⇒ Rank of the matr
3
2
1
4

⇒ If C is thermal capacitance, m is mass of liquid and c is specific heat, then
C = mc
c = mC
m = cC
C = (mc)²

⇒ Which of the following counters can be used to divide the clock frequency of a microprocessor by 5?
3 bit counter
5 bit counter
mod 3 counter
mod 5 counter

⇒ The minimal function that can detect a "divisible by 3" 8421 BCD code digit (representation D₈D₄D₂D₁) is given by
D₈D₁ + D₄D₂ + D₈D₂D₁
D₈D₁ + D₄D₂ D₁ + D₄D₂D₁ + D₈D₄D₂D₁
D₄D₁ + D₄D₂ + D₈D₄ D₂D₁
D₄D₂D₁ + D₄D₂D₁ + D₈D₄D₂D₁

⇒ The most effective anti jamming technique is
frequency hopping
spread-spectrum modulation
key leverage
once-only key

⇒ In a voltage regulator circuit using zener diode the load voltage is nearly constant only if
zener current is very small
zener current is very large
zener current is neither small nor large
None of the above

⇒ Which of the following terminations makes the input impedance of a line equal to characteristic impedance Z₀?
line open circuited at far end
line terminated in Z₀
line short circuited at far end
line terminated in inductance

⇒ Which of these has the highest dielectric strength?
Mica
Air
Cotton
Rubber

⇒ On the basis of the type of chemical bonds, solids may be classified into
ionic crystals
ionic and valence crystals
ionic crystal, valence crystals and metals
ionic crystals, valence crystals, metal and vander wall crystals

⇒ The purpose of using negative feedback in a op-amps is to
stabilize overall gain
increase output
stabilize overall gain and increase output
increase output and decrease input

⇒

Assertion (A): In a parallel circuit with three branches having R, L and C respectively and fed by a step current I, the current through inductance is always zero.

Reason (R): The time constant of R-L circuit is L/R.

Both A and R are true and R is correct explanation of A
Both A and R are true and R is not the correct explanation of A
A is true but R is false
A is false but R is true

⇒ A single-sideband (SSB) signal contains 3 kW. The power content of the carrier is __________ kW.
2
2
3
0

⇒ In steady state condition inductor behave as
open circuit
short circuit
current source
voltage source

⇒ The gain of collinear arrays is maximum when the spacing between the elements is
0.1 λ to 0.3 λ
0.3 λ to 0.9 λ
0.5 λ to 0.7 λ
0.7 λ to 0.9 λ

⇒ Consider the following statements associated with two port networks.

Z₁₂ = Z₂₁
Y₁₂ = Y₂₁
h₁₂ = h₂₁
AD - BC = 1

Which one of the statement given above are correct?
1, 2, 3
2, 3, 4
1, 3, 4
1, 2, 4

⇒ While forming Routh's array, the situation of a row of zeros indicates that the system
has symmetrically located roots
is not sensitive to variations in gain
is stable
is unstable

⇒ A master slave flip-flop has the characteristics that
change in the I/P immediately reflected in the O/P
change in the O/P occurs when the state of the master is affected
change in the output occurs when the state of the slave is affected
both the master and the slave states are affected at the same time

⇒ An inductor filter has a ripple that __________ with load resistance and consequently is used only with relatively __________ load currents.
decreases, low
decreases, high
increases, low
increases, high

⇒ In a 7 segment LED display, the minimum number of segments is activated when the input decimal number is
0
1
2
3

⇒ Access time of a storage is the time required
to write one word into the memory
to read one word from the memory
to write one word into and to read one word from the memory
either to write one word or to read one word

⇒

Assertion (A): The 'do while' statement is used less frequently than the 'while' statement.

Reason (R): For most applications it is more natural to test for continuation of loop at the beginning than at the end of loop.

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

⇒ A sinusoidal signal is measured by CRO. The scale is set at 4 mV/cm. If vertical distance between positive and negative peaks is 6 cm, the peak value of ac signal is
6 mV
12 mV
24 mV
3 mV