Question is ⇒ A signal is sampled at Nyquist rate fs = 2f0. The function can be recovered from its samples only. If it is a, Options are ⇒ (A) Periodic square wave of fundamental frequency f0, (B) Triangular wave of fundamental frequency f0, (C) Periodic sine wave of fundamental frequency f0, (D) Unit impulse function, (E) , Leave your comments or Download question paper.

Question is ⇒ A signal is sampled at Nyquist rate fs = 2f0. The function can be recovered from its samples only. If it is a, Options are ⇒ (A) Periodic square wave of fundamental frequency f0, (B) Triangular wave of fundamental frequency f0, (C) Periodic sine wave of fundamental frequency f0, (D) Unit impulse function, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	A signal is sampled at Nyquist rate f_s = 2f₀. The function can be recovered from its samples only. If it is a
A.	Periodic square wave of fundamental frequency f₀ [Wrong Answer]
B.	Triangular wave of fundamental frequency f₀ [Wrong Answer]
C.	Periodic sine wave of fundamental frequency f₀ [Correct Answer]
D.	Unit impulse function [Wrong Answer]
View Answer 1 -1 Explanation:- Answer : C 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 :

⇒ For a series resonant circuit at low frequency impedance is __________ and at high frequency circuit impedance is __________ .
capacitive, inductive
inductive, capacitive
resistive, inductive
capacitive, resistive

⇒ The thin parallel wires are carrying current along the same direction. The force experienced by one due to the other is
parallel to the lines
perpendicular to the lines and attractive
perpendicular to the lines and repulsive
zero

⇒ Photoconductive devices uses
metallic conductors
good quality insulators
semiconductors
either (a) or (c)

⇒ What is the effect of cut in voltage on the wave form of output as compared to input in a semiconductor diode?
The duration of output waveform is less than 180°
Output voltage is less than input voltage
Output voltage is more than input voltage
Both (a) and (b)

⇒ Audio systems use transverse recording.
TRUE
FALSE

⇒ The IF frequencies in a TV receiver
38.9 MHz for video and 33.4 MHz for audio
38.9 MHz for both video and audio
33.4 MHz for both video and audio
33.4 MHz for video and 38.9 MHz for audio

⇒ TV signal strength when expressed in dB m has the reference of
10 μV/m
5 μV/m
2 μV/m
1 μV/m

⇒ The light output of LED varies as (current)ⁿ. The value of n is about
0.5
1
1.3
2.1

⇒ Surface integral of the electric field intensity is
differential of volume flux
electrical charge
net flux emanating from the surface
none of the above

⇒

Match the following:

	List I (BJT amplifier)		List II (Characteristics)
A.	CE	1.	good voltage gain, good current gain
B.	CC	2.	voltage gain less than 1, high current gain
C.	CB	3.	current gain less than 1, voltage gain high

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

⇒ Which of the following term does not apply to the Yagi-Uda array?
High gain
Folded dipole
Parasitic
Good bandwidth

⇒ Which of the following is used as detector in audio frequency ac bridges?
AC voltmeter
CRO
Head phones
Vibration galvanometer

⇒ In 8085 microprocessor, an interrupt service request is serviced
immediately on receipt of request
after the execution of the current instruction is completed
at the end of the current machine cycle
none

⇒ The positive peak of an AM wave is 16 V and the minimum value is 4 V Assuming single tone modulation, the modulation index is
0.6
0.25
4
0.36

⇒ In which of the following logical group instructions of 8085 is the addressing mode 'immediate'?
ANA r
ANA M
ANI data
XRA r

⇒ Which memory requires periodic recharging?
All ROMS
All RAMS
Static RAM
Dynamic RAM

⇒ 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

⇒ TV receivers use flyback switched mode power supply because
it can supply many voltage outputs
it does not require a filter choke and is cheap
it has very good regulation at all loads
both (a) and (c)

⇒ In figure, i(0^-) and v(0^-) are zero. The switch is closed at t = 0, i(0⁺) and (∞)
3 A and 1.5 A
1.5 A and zero
3 A and zero
1.5 A and 3 A

⇒ The work function of a photo surface whose threshold wave length is 1200 A, will be
0.103 eV
0.673 eV
1.03 eV
1.27 eV

⇒ The intrinsic resistivity of silicon at 300 K is about
1 Ω-cm
400 Ω-cm
10000 Ω-cm
230000 Ω-cm

⇒ A circuit said to be lumped when physical dimensions of all the component are __________ .
greater compared with wavelength of electromagnetic signal
small compared with wavelength electromagnetic signal
negligible compared with wavelength of electromagnetic signal
equal compared with wavelength of electromagnetic signal

⇒ If a microcomputer has a 64 K memory; what is the hexadecimal notations for the first memory location?
AAAA
FFFF
AAA0
0

⇒ Which of the following method cannot be used to increase the bandwidth for cascaded RF amplifier stages?
Wave traps in each stage
Stagger tuning
A shunt damping resistor across each tuned circuit
Doubled tuned transformers with tighter coupling

⇒

Assertion (A): In liquid system the ratio of change in liquid level to change in flow rate is called resistance of liquid flow.

Reason (R): In liquid level systems the ratio of change in liquid stored in a tank to the change in head is called capacitance of tank.

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 but R is wrong
R is correct but A is wrong

⇒ V_R at t < T, t = &in
500e^-40x10⁴t, 0
100e^-40x10³t, 0
100e^-40x10⁶t, 0
100e^-40x10⁴t, 0

⇒ ROC of sequence x[n] = (3)ⁿ ∪[n] + (4)ⁿ ∪[- n - 1]
|z| > 4
3 < |z| < 4
|z| < 4
|z| > 3

⇒

Match the following:

	List I		List II
A.	Tunnel diode	1.	is also known as hot carrier diode
B.	PIN diode	2.	used with reverse bias
C.	Zener diode	3.	has an intrinsic layer
D.	Schottky diode	4.	v-i curve has shape of N

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

⇒ Consider the program segment written for 8085 based sys
41
69
44
Indeterminate

⇒ In what condition does BJT act like an open switch
cut off
saturation
active
both (b) and (c)