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A signal having uniformly distributed amplitude in the interval (- V to + V) is to be encoded using PCM with uniform quantization. The signal to quantization noise ratio is determined by | |
A. | dynamic range of signal [Wrong Answer] |
B. | sampling rate [Correct Answer] |
C. | number of quantizing levels [Wrong Answer] |
D. | power spectrum of signal [Wrong Answer] |
View Answer
Explanation:-
Answer : B Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
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90.9 V
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⇒ An audio signal is band limited to 4 kHz. It is sampled at 8 kHz. What will be the spectrum of the sampled signal?
-4 kHz to 4 kHz
-8 kHz to 8 kHz
every 4n kHz repeating
every ± 8 kHz and operating as well as at zero (k integer)
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W/m^{2}
W-m
kWh/s
W/m
⇒ If a signal g(t) has energy E, then the energy of the signal g(2t) is equal to ...
E/2
E/4
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⇒ A pole zero pattern of a certain filter is shown in figure. This filter mus
LPF
BFP
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APF
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16 Mbps
100 Mbps
600 Mbps
6.4 Gbps
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rms power
average power
peak power
instantaneous power
⇒ Which of the following does not use the principle of change in inductance?
LVDT
Inductance displacement transducer
Strain gauge
Reluctance pick up
⇒ A single phase half bridge inverter required to feed R-L loads needs
2 thyristors
4 thyristors
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two 4-bit binary numbers
four 6-bit binary numbers
four 8-bit binary numbers
any number of 4-bit numbers
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100.5 eV
51.2 eV
13.6 eV
0.2 eV
⇒ Which of the following Boolean Expression correctly represents the relation between P, Q, R and M_{1M1 = (P OR Q) XOR RM1 = (P AND Q) XOR RM1 = (P NOR Q) XOR RM1 = (P XOR Q) XOR R}
⇒ In figure, the capacitor is charged to 1 V. At t = 0 the switch is closed so that i = e^{-t}. When i = 0.37 A, the voltage across capacito
1 V
0.63 V
0.37 V
0.185 V
⇒ BFO stands for
Beat Frequency Oscillator
Broad Frequency Oscillator
Blocking Frequency Oscillator
Ballistic Frequency Oscillator
⇒ A branched duplexer requires
TR tubes
ATR tube
both TR and ATR tube
none of the above
⇒ If V_{dc1} is the dc output voltage in half wave controlled rectifier circuit feeding resistive load and V_{dc2} is the dc output voltage in full wave controlled rectifier circuit (M - 2 connection) feeding resistive load, then
V_{dc1} = 0.5 V_{dc2} for all values of firing angle
V_{dc1} = V_{dc2} for all values of firing angle
V_{dc1} ≤ 0.5 V_{dc2} for all values of firing angle
V_{dc1} ≥ 0.5 V_{dc2} for all values of firing angle
⇒ In the circuit, S was initially open. At time t = 0, S is closed. When the current through the inductor is 6 A, the rate of change of current through the resistor is 6 A/s. The value of the inductor woul
1 H
2 H
3 H
4 H
⇒ Acoustic strain gauges
have good linearity of measurement
do not have long term stability
have a large range of measurement
have an accuracy range of 0.1-1% depending on environment
⇒ Radiation efficiency of an antenna is defined as the ratio of
Total power radiated by an antenna to the net power accepted by the antenna from the connected transmitter
The frequency at which minimum power is radiated to the frequency at which maximum power is radiated
Total power accepted from the transmitter to total power generated by the transmitter
Power in main lobe to that in the side lobe
⇒ The dual of a link is
twig
node
loop
tree branch
⇒ A signal x(n) = sin(ω_{0}n + φ) is the input to a linear time invariant system having a frequency response H(e^{jω}) If the O/P of the system is Ax(n -n_{0}), then the general form of H(e^{jω}) will be
- n_{0}ω_{0} + β for any arbitrary real β
- n_{0}ω_{0} + 2pk for any arbitrary integer k
n_{0}ω_{0} + 2pk for any arbitrary integer k
- n_{0}ω_{0} + φ
⇒ If V = 4 in the figure, the value of I_{S} is given
0.25
5/2 A
0
None of these
⇒ 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}
⇒ The speeds used in recording audio programs in house hold recorders are
38 cm/s and 9.5 cm/s
38 cm/s and 19 cm/s
9.5 cm/s and 4.75 cm/s
38 cm/s and 4.75 cm/s
⇒ Circular polarization
is useful in reducing depolarization effect on received wave
involves critical alignment of transmitting and receiving antenna
is useful in discrimination between reception of adjacent beams
none of the above
⇒ An amplifier has a large ac input signal. The clipping occurs on both the peaks. The output voltage will be nearly a
sine wave
square wave
triangular wave
(a) or (c)
⇒
Assertion (A): Snubber circuit has an RC series circuit in parallel with SCR
Reason (R): Voltage across a capacitor can not change instantaneously.
Both A and R are correct and R is correct explanation of A
Both A and R correct but R is not correct explanation of A
A is correct but R is wrong
A is wrong but R is correct
⇒ A narrowband amplifier is one that has a passband
limited to 2000 Hz only
limited to audio frequency range only
near cut off region of active device
approximately 10% of its central frequency