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Assertion (A): Negative feedback reduces the bandwidth of an amplifier Reason (R): Negative feedback stabilizes the gain of an amplifier | |
A. | Both A and R are correct and R is correct explanation for A [Wrong Answer] |
B. | Both A and R are correct but R is not correct explanation for A [Wrong Answer] |
C. | A is correct R is wrong [Wrong Answer] |
D. | A is wrong R is correct [Correct Answer] |
View Answer
Explanation:-
Answer : D Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ In the circuit of figure the current through L at t = &infin
0
0.416666666666667
6.67 A
5.1 A
⇒ In a triode
grid is nearer to cathode than anode
grid is nearer to anode than cathode
grid is equidistant from anode and cathode
any of the above
⇒ If Z(s) has a pole at origin, the realization leads to
a resistance in series
an inductance in series
a capacitance in series
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⇒ A transmission line is feeding 1 watt of power to a horn antenna having a gain of 10 dB. The antenna is matched to the transmission line. The total power radiated by the horn antenna into the free space is
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⇒ A 1000 kHz carrier is simultaneously modulated with 300 Hz, 800 Hz and 2 kHz audio sine waves. The frequencies present in the output will be
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⇒ For representing two sinusoidal voltages on a phasor diagram
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⇒ In the given figure forward voltage wave has a magni
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⇒ In the circuit of figure the current through L at t = &infin
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0.416666666666667
6.67 A
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⇒ In a triode
grid is nearer to cathode than anode
grid is nearer to anode than cathode
grid is equidistant from anode and cathode
any of the above
⇒ If Z(s) has a pole at origin, the realization leads to
a resistance in series
an inductance in series
a capacitance in series
a resistance or capacitance in series
⇒ Which of the following is a balanced line?
Coaxial line
Strip line
Microstrip line
TV twin lead
⇒ In terms of z parameters, the condition for the network to be passive is
z_{11} = z_{22}
z_{12} = z_{21}
z_{11} = 0
z_{22} = 0
⇒ In free space
phase velocity is greater than light velocity
phase velocity is equal to group velocity
phase velocity is equal to light velocity
Both (b) and (c)
⇒ In a colour TV receiver, the sound intercarrier IF is generated in
video detector
video IF amplifier
tuner mixer stage
limiter stage
⇒ A heavily doped semiconductor exhibits a __________ such a device is called sensistors.
negative temperature coefficient of resistance
positive temperature coefficient of resistance till a particular value of temperature and then it shown negative temperature coefficient of resistance
positive temperature coefficient of resistance
none of the above
⇒ Two identical NMOS transistors M_{1} and M_{2} are connected as shown below. V_{bias} is chosen so that both transistors are in saturation. The equivalent g_{m} of the pair is defined t
the sum of individual g_{m}'s of the transistors
the product of individual g_{m}'s of the transistors
nearly equal to the g_{m} of M_{1}
nearly equal to g_{m} / g_{0} of M_{2}
⇒ For the system in the given figure, the characteristic equation
s^{2} + s(3 + 6a) + 6 = 0
s^{2} + s(3 + 12a) + 12 = 0
s^{2} + 3s = 0
s^{2} + 6s = 0
⇒ In which of the following 8085 instructions no condition flags are affected?
INX rp
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SBI data
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⇒ Consider the following statements as regards DPSK and DEPSK
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- In both DPSK and DEPSK errors always occur in pairs
1 and 3
1 and 2
2 and 3
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⇒ A first-order system has a time constant t. For unit ramp input, the steady state error is
t^{2}
t
t
1/t
⇒ A counter has 4 flip flops. It divides the input frequency by
4
2
8
16
⇒ In a single phase full wave regulator feeding an R-L load, the power factor angle of load is θ. The range of control of firing angle a is
0 ≤ a ≤ p
θ ≤ a ≤ p
0 ≤ a ≤ (p - θ)
θ ≤ a ≤ (p + θ)
⇒ A transmission line is feeding 1 watt of power to a horn antenna having a gain of 10 dB. The antenna is matched to the transmission line. The total power radiated by the horn antenna into the free space is
10 watts
1 watt
0.1 watt
0.01 watt
⇒ Entropy gives
measure of Uncertainty
rate of Information
average information
probability of Information
⇒ When an alternating current passes through an ohmic resistance the electrical power converted into heat is
apparent power
true power
reactive power
none of the above
⇒ The Hilbert transform of cos ω_{1}t + sin ω_{2}t is
sin ω_{1}t + cos ω_{2}t
sin ω_{1}t - cos ω_{2}t
cos ω_{1}t - cos ω_{2}t
sin ω_{1}t + sin ω_{2}t
⇒ Which of the following is a valid integer constant?
127
127
127
125 + 3
⇒ To multiply a number by 8 in 8085 we have to use
RAL
instructiononce
twice
thrice
four times
⇒ An one sided abrupt junction has 10^{21}/m^{3} of dopants on the lightly doped side, zero bias voltage and a built-in potential of 0.2 V. The depletion width of abrupt junction.(q = 1.6 x 10^{-19} C, ε_{r} =16, ε_{0} = 8.87 x 10^{-12} F/m) is
0.036 nm
0.6 μm
3 mm
1.5 mm
⇒ A 1000 kHz carrier is simultaneously modulated with 300 Hz, 800 Hz and 2 kHz audio sine waves. The frequencies present in the output will be
998 kHz and 1002 kHz
998 kHz, 999.2 kHz, 1000.8 kHz, 1002.0 kHz
998 kHz, 999.2 kHz, 999.7 kHz, 1000.3 kHz, 1000.8 kHz and 1000.2 kHz
none of the above
⇒ The phase difference (jω - p_{1}) means
phasor drawn from p_{1} to jω
phasor drawn from origin to p_{1}
phasor directed from origin to jω point
phasor directed from jω to p_{1}
⇒ Specific resistance of silver is about
0.16 x 10^{-8} Ω-m
1.64 x 10^{-8} Ω-m
16 x 10^{-8} Ω-m
164 x 10^{-8} Ω-m
⇒ If reference sound pressure P_{0} is 2 x 10^{-5} N/m^{2}, a sound pressure of 90 dB is equal to
0.632 N/m^{2}
0.707 N/m^{2}
0.835 N/m^{2}
0.925 N/m^{2}
⇒ For representing two sinusoidal voltages on a phasor diagram
Both voltages must be of the same frequency
Both voltages must be sinusoidal but may be of different frequencies
One of the voltages must be of 50 Hz
The frequency of one must be integral of that of other
⇒ In the given figure forward voltage wave has a magni
90 V
60 V
30 V
10 V
⇒ The number of memory locations in which 14 address bits can access is
1024
2048
4096
16384
⇒
Match the following:
List I (Operator) | List II (Description) | ||
---|---|---|---|
A. | & & | 1. | Bitwise inclusive OR |
B. | & | 2. | Bitwise AND |
C. | | | | 3. | Logical AND |
D. | | | 4. | Logical OR |
A-1, B-2, C-3, D-4
A-3, B-2, C-4, D-1
A-2, B-3, C-1, D-4
A-1, B-4, C-2, D-3