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The PAM Signal can be detected by | |
A. | Band pass filter [Wrong Answer] |
B. | Band stop filter [Wrong Answer] |
C. | High pass filter [Wrong Answer] |
D. | Low pass filter [Correct Answer] |
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Explanation:-
Answer : D Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ For telegraphy the most commonly used modulation system is
FSK
two tone modulation
PCM
single tone modulation
⇒ In a specimen of ferromagnetic material, as the flux density is increased from zero to 2.5 T, µ_{r} will
increase
decrease
first decrease then increase
first increase then decrease
⇒ The advantages of flash memory over EEPROM are
higher density
lower cost
both higher density and lower cost
none of the above
⇒ 1's complement of 11100110 is
11001
10000001
11010
0
⇒ In order to receive a vertical polarized wave, the conductor of the dipole should be mounted
horizontally
vertically
at an angle of 45°
at an angle of 90°
⇒ For a paramagnetic material, susceptiblity increases with increasing temperature.
TRUE
FALSE
⇒ 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)
⇒ Which of the following has highest resistivity?
Mica
Paraffin wax
Air
Mineral oil
⇒ Two capacitors of 20 μF each are in series. The total capacitance is
5 μF
10 μF
40 μF
400 μF
⇒ The relative permittivity of the ionosphere at ratio frequencies is
> 1
< 1
1
≥ 1
⇒ If a line is open circuited Z_{in} = Z_{0} tanh (gl).
TRUE
FALSE
⇒ In sinusoidal PWM for inverters the width of different pulses are not the same.
TRUE
FALSE
⇒ An electron in a homogeneous magnetic field and having velocity perpendicular to the direction of field moves
perpendicular to the field
along the field
along a straight line inclined at 45° to field
in a circular path
⇒ If the operating temperature increases by 10°C, the rate of deterioration of solid dielectric becomes
double
one and a half time
3 times
4 times
⇒ Which of the following is not considered as a useful quantity in comparing noise performance of receivers?
Noise temperature
Noise figure
Noise resistance
Input noise voltage
⇒ For the differential equation (D^{3} - D^{2} + D -1) [y(t)] = 0 the root of auxiliary equation
-j, j, 1
-j, j, 2
1, 2, j
1, 2, -j
⇒ In mode filter of the given figure which of the following modes is unaffe
TE_{01}
TE_{10}
TE_{11}
all TM
⇒ When sources of different frequencies feed a network the only method of solution is superposition theorem.
TRUE
FALSE
⇒ A bridge type single phase cycloconverter changes the frequency f to f/3. Then one half wave of output contains
3 full waves of input
3 half waves of input
6 full waves of input
6 half waves of input
⇒ If load impedance Z_{L} >> Z_{0}, then
Z_{0} = Z_{L} (VSWR)
Z_{L} = Z_{0} (VSWR)
Z_{L} = Z_{0} (VSWR - 1)
Z_{L} = Z_{0} VSWR
⇒ For the network of figure, z_{115/3 Ω3/2 Ω2 Ω2/3 Ω}
⇒ The power dissipation in a transistor is the product of
emitter current and emitter to base voltage
emitter current and collector to emitter voltage
collector current and collector to emitter voltage
none of the above
⇒ Which is correct for a vacuum triode?
μ = r_{p}g_{m}
r_{p} = μg_{m}
g_{m} = μr_{p}
r_{p}g_{m}
⇒ A Weinbridge oscillator is a
VHF oscillator
RF oscillator
microwave oscillator
audio frequency oscillator
⇒ For the truth table of the given figure
A + B + C
A + BC
A
B
⇒ A unipole is also known as
omnidirectional radiator
unidirectional radiator
line radiator
none of the above
⇒ A transmission line terminates in two branches, each of length λ/4, as shown. The branches are terminated by 50Ω loads. The lines are lossless and have the characteristics impedances shown. Determine the impedance Z_{1} as seen by the so
200Ω
100Ω
50Ω
25Ω
⇒ The maximum number of alphabets/digits or special symbots for character constants in C is
1
2
4
8
⇒ If quadratic equation x^{2} - 1000x + 25 = 0 is solved using floating point arithmetic with 4 digit mantissa, the roots are
.1000 E 4 and .1000 E 4 respectively
.0000 E 4 and .0000 E 4 respectively
.1000 E 4 and .0000 E 4 respectively
None of the above
⇒ While __________ is the fastest unsaturated logic gate __________ has the excellent noise immunity?
ECL, TTL
TTL, ECL
ECL, RTL
RTL, DTL
⇒ For telegraphy the most commonly used modulation system is
FSK
two tone modulation
PCM
single tone modulation
⇒ In a specimen of ferromagnetic material, as the flux density is increased from zero to 2.5 T, µ_{r} will
increase
decrease
first decrease then increase
first increase then decrease
⇒ The advantages of flash memory over EEPROM are
higher density
lower cost
both higher density and lower cost
none of the above
⇒ 1's complement of 11100110 is
11001
10000001
11010
0
⇒ In order to receive a vertical polarized wave, the conductor of the dipole should be mounted
horizontally
vertically
at an angle of 45°
at an angle of 90°
⇒ For a paramagnetic material, susceptiblity increases with increasing temperature.
TRUE
FALSE
⇒ 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)
⇒ Which of the following has highest resistivity?
Mica
Paraffin wax
Air
Mineral oil
⇒ Two capacitors of 20 μF each are in series. The total capacitance is
5 μF
10 μF
40 μF
400 μF
⇒ The relative permittivity of the ionosphere at ratio frequencies is
> 1
< 1
1
≥ 1
⇒ If a line is open circuited Z_{in} = Z_{0} tanh (gl).
TRUE
FALSE
⇒ In sinusoidal PWM for inverters the width of different pulses are not the same.
TRUE
FALSE
⇒ An electron in a homogeneous magnetic field and having velocity perpendicular to the direction of field moves
perpendicular to the field
along the field
along a straight line inclined at 45° to field
in a circular path
⇒ If the operating temperature increases by 10°C, the rate of deterioration of solid dielectric becomes
double
one and a half time
3 times
4 times
⇒ Which of the following is not considered as a useful quantity in comparing noise performance of receivers?
Noise temperature
Noise figure
Noise resistance
Input noise voltage
⇒ For the differential equation (D^{3} - D^{2} + D -1) [y(t)] = 0 the root of auxiliary equation
-j, j, 1
-j, j, 2
1, 2, j
1, 2, -j
⇒ In mode filter of the given figure which of the following modes is unaffe
TE_{01}
TE_{10}
TE_{11}
all TM
⇒ When sources of different frequencies feed a network the only method of solution is superposition theorem.
TRUE
FALSE
⇒ A bridge type single phase cycloconverter changes the frequency f to f/3. Then one half wave of output contains
3 full waves of input
3 half waves of input
6 full waves of input
6 half waves of input
⇒ If load impedance Z_{L} >> Z_{0}, then
Z_{0} = Z_{L} (VSWR)
Z_{L} = Z_{0} (VSWR)
Z_{L} = Z_{0} (VSWR - 1)
Z_{L} = Z_{0} VSWR
⇒ For the network of figure, z_{115/3 Ω3/2 Ω2 Ω2/3 Ω}
⇒ The power dissipation in a transistor is the product of
emitter current and emitter to base voltage
emitter current and collector to emitter voltage
collector current and collector to emitter voltage
none of the above
⇒ Which is correct for a vacuum triode?
μ = r_{p}g_{m}
r_{p} = μg_{m}
g_{m} = μr_{p}
r_{p}g_{m}
⇒ A Weinbridge oscillator is a
VHF oscillator
RF oscillator
microwave oscillator
audio frequency oscillator
⇒ For the truth table of the given figure
A + B + C
A + BC
A
B
⇒ A unipole is also known as
omnidirectional radiator
unidirectional radiator
line radiator
none of the above
⇒ A transmission line terminates in two branches, each of length λ/4, as shown. The branches are terminated by 50Ω loads. The lines are lossless and have the characteristics impedances shown. Determine the impedance Z_{1} as seen by the so
200Ω
100Ω
50Ω
25Ω
⇒ The maximum number of alphabets/digits or special symbots for character constants in C is
1
2
4
8
⇒ If quadratic equation x^{2} - 1000x + 25 = 0 is solved using floating point arithmetic with 4 digit mantissa, the roots are
.1000 E 4 and .1000 E 4 respectively
.0000 E 4 and .0000 E 4 respectively
.1000 E 4 and .0000 E 4 respectively
None of the above
⇒ While __________ is the fastest unsaturated logic gate __________ has the excellent noise immunity?
ECL, TTL
TTL, ECL
ECL, RTL
RTL, DTL