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PCM : Quantising Noise :: Transistor : | |
A. | Partition noise [Correct Answer] |
B. | Shot noise [Wrong Answer] |
C. | Whirl [Wrong Answer] |
D. | No noise [Wrong Answer] |
View Answer
Explanation:-
Answer : A Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
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ions
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neither (a) nor (b)
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Energy stored in the capacitor does not enter it through the connecting wires but through the space around the wires and plates uf capacitor
Rate at which energy flows into this volume is equal to the integration of the Poynting vector over the boundary of the volume between the plates.
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⇒ In a conductor the current flow is due to
holes
electrons
ions
electrons and ions
⇒ 74HCT00 series is
NAND IC
interface between TTL and CMOS
inverting IC
NOR IC
⇒ For any transfer function, the constant phase angle loci are
a family of circles
a family of straight lines
either (a) or (b)
neither (a) nor (b)
⇒ Consider a parallel plate capacitor being charged. Identify the incorrect statements
Energy stored in the capacitor does not enter it through the connecting wires but through the space around the wires and plates uf capacitor
Rate at which energy flows into this volume is equal to the integration of the Poynting vector over the boundary of the volume between the plates.
The Poynting vector points everywhere radially outward of the volume between the plates
The Poynting vector points everywhere radially into the volume between the plates.
⇒ If a driving point function N(s) = p(s)/q(s), then
the degree of p(s) and q(s) may differ by one only
the degree of p(s) and q(s) may differ by zero only
the degrees of p(s) and q(s) be equal
the degrees of p(s) and q(s) must not be equal
⇒ If E_{b}, the energy per bit of a binary digital signal is 10^{-6} watt sec. and the one sided power spectral density of the white noise N_{0} = 10^{-5} W/Hz, then the output SNR of the matched filter is
26 dB
10 dB
20 dB
13 dB
⇒ In a single sideband suppressed carrier AM system, the modulation index is changed from 0 to 1, the power content of the signal
will be quarter
will be doubled
will increase by 50 percent
will increase by 25 percent
⇒ The resonant frequency of the circuit shown in figure
1/22p Hz
1/2p Hz
1/4p Hz
1/2p Hz
⇒ The addition of a pole to the open loop transfer function pulls the root locus
to the right
to the left and making the system more stable
towards right or left depending on the position of new pole
none of the above
⇒ FM has
two sidebands only
four sidebands only
eight sidebands only
infinite sidebands
⇒ NAND and NOR gates are universal gates.
TRUE
FALSE
⇒ A waveguide twist is used to change the plane of polarization.
TRUE
FALSE
⇒ M = (μ_{r} - 1)H.
TRUE
FALSE
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CW radar
FM radar
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Moving target plotting on PPI
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⇒ In a transistor receiver, the use of FET as the first stage amplifier is likely to
improve selectivity of the receiver
improve the effectiveness of the AGC
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reduce the effect of noise at all frequencies
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it is even signal
convolution of any arbitary function x(t) and an impulse is the original function itself
the sum of two impulses at same location is the impulse with the strength equal to the summation of individual strengths.
none of these.
⇒ The given figure shows three Nyquist plots of G(s) H(s) = e^{-sT}/[s(s + 1)] for different values of T. The curves 1, 2, 3 ca
for T = 0, 0.5 and 1 respectively
for T = 1, 0.5 and 0 respectively
for T = 0.5, 1 and 0 respectively
for T = 0, 1 and 0.5 respectively
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360°
180°
90°
0°
⇒ In intrinsic semiconductors, the number of free electrons is equal to the number of mobile holes.
TRUE
FALSE
⇒ Which stage generates RF carri
Amplifier
Oscillator
Power supply
All of the above
⇒ The capacitors C_{1}, C_{3}, C_{4} and C_{5} have a capacitance of 4 μF each and the capacitor C_{2} has a capacitance of 10 μF. The effective capacitance (in μF) between the points X and Y will
4 μF
6 μF
3 μF
8 μF
⇒ Carbon steel has a residual flux density of 1 Wb/m^{2}.
TRUE
FALSE
⇒ To turn off an SCR, it is necessary to reduce its current to less than :
trigger current
holding current
breakover current
none of the above
⇒ In an amplifier the voltage gain is the ratio of
output voltage and emitter resistance
output voltage and input current
output voltage and input voltage
none of the above
⇒ A Schottky diode clamp is used along with switching BJT for
reducing the power dissipation
reducing the switching time
increasing the value of β
reducing the base current
⇒ A step down cycloconverter has an input frequency f. If it uses natural commutation, the output frequency
must be a sub-multiple of input frequency
can be any frequency
must be an even sub-multiple of input frequency
must be an odd sub-multiple of input frequency
⇒ The mechanical system shown below has its pole(s)
- K/D
- D/K
- DK
0, - K/D
⇒ The ROC of sequence x[n] = (0.8)^{n} ∪[n] + (0.4)^{n} ∪[n]
|z| > 0.8
|z| > 0.4
0.4 < |z| < 0.8
|z| < 0.8
⇒ Which rectifier has the best ratio of rectification?
Half wave rectifier
Full wave rectifier
Bridge rectifier
Three phase full wave rectifier