Question is ⇒ A 400 W carrier is amplitude modulated with <i>m</i> = 0.75. If single side band suppressed carrier is used the total power in modulated wave is, Options are ⇒ (A) 400 W, (B) 512 W, (C) 112 W, (D) 56 W, (E) , Leave your comments or Download question paper.

Question is ⇒ A 400 W carrier is amplitude modulated with <i>m</i> = 0.75. If single side band suppressed carrier is used the total power in modulated wave is, Options are ⇒ (A) 400 W, (B) 512 W, (C) 112 W, (D) 56 W, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	A 400 W carrier is amplitude modulated with m = 0.75. If single side band suppressed carrier is used the total power in modulated wave is
A.	400 W [Wrong Answer]
B.	512 W [Wrong Answer]
C.	112 W [Wrong Answer]
D.	56 W [Correct Answer]
View Answer 1 -1 Explanation:- Answer : D 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 :

⇒ FM broadcast is used in
VHP range
UHF range
MF range
both VHP and UHF range

⇒ In the circuit shown in the figure the power dissipated in 30 Ω resistor will be maximum if the value of
30 Ω
10 Ω
9 Ω
zero

⇒ In the given figure the phase angle of Fn is either 0 or &
TRUE
FALSE

⇒

Match the following:

	List I		List II
A.	Copper	1.	produces discrete energy level just above valence band
B.	Rubber	2.	produces discrete energy level just below conduction band
C.	Antimony	3.	large forbidden gap
D.	Boron	4.	valence and conduction bands overlap

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

⇒ A zero mean white Gaussian noise is passed through an ideal low pass filter of bandwidth 10 kHz. The output of the samples so obtained would be
correlated
statistically independent
uncorrelated
orthogonal

⇒ The impulse response h(t) of a linear invariant continuous time system is given by h(t) = exp (- 2t) u(t), where u(t) denotes the unit step function. The output of this system to the sinusoidal input x(t) = 2cos(2t) for all time t, is
0
2^-0.25 cos (2t - 0.125p)
2^-0.5 cos (2t - 0.125p)
2^-0.5 cos (2t - 0.25p)

⇒ For FM, which of the following statement is not true?
The bandwidth increases as modulation index is increased
The total power remains constant with respect to modulation index
The carrier never becomes zero
All of the above

⇒ Consider the following stateme
2 and 4
1 and 2
1 only
3 and 4

⇒ A conductor in x-y plane and having length 1 m is moving with a velocity V = (2i + 3j + k) m/sec. A magnetic induction field B = (i + 2j) Wb/m² is applied to the conductor. The potential difference between the ends of the conductor is
0
4.88 V
6 V
None of these

⇒ A broadcast radio transmitter radiates 5 kW when the modulation percentage is 60. How much of this is carrier power?
6.66 kW
5 kW
4.9 kW
4.23 kW

⇒ The hot resistance of a tungsten lame is about 12 times its cold resistance. Accordingly, the cold resistance of a 60 Ω, 120 V lamp is about __________ ohm.
5
240
2
2880

⇒ The realization of a reactance function gives
a network having inductances only
a network having capacitances only
a network having resistances only
a network having inductances and capacitances only

⇒ In 8085 eight address and data buses are multiplexed.
TRUE
FALSE

⇒ A gate function which occurs at t = t₀ and lasts for duration T can be written as
u (t - t₀ - T)
u(t - t₀) = u(t - t₀ - T)
u(t - t₀) - u(t - t₀ - T)
u(t - t₀) - u(t - t₀ + T)

⇒ The system with given pole-zero diagra
casual
non-casual
both sided
not-possible

⇒ Free electrons exist in
first band
second band
third band
conduction band

⇒ Which of the following memories normally has highest storage capacity?
Magnetic disc
Magnetic tape
Semiconductor memory
Core memory

⇒ The reflection coefficient on a line is 0.2 ∠45°. The SWR is
0.8
1.1
1.2
1.5

⇒

Match the following:

	List I (Characteristic equation)		List II (Degree of damping)
A.	s² + 15s + 56.25	1.	Undamped
B.	s² + 5s + 6	2.	Underdamped
C.	s² + 20.25	3.	Critically damped
D.	s² + 4.55s + 42.25	4.	Overdamped

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

⇒ The merger of hole and free electron is called
covalent bonding
recombination
thermal energy
free electrons

⇒ If transmission bandwidth is doubled in FM, SNR is
doubled
raised four times
decreased four times
halved

⇒ The rotation of direction of E field of a linearly polarized wave passing through a magnetised ferric medium is called
Lorentz rotation
Faraday rotation
Steinmitz rotation
Fleming's rotation

⇒ Which of the following produces upper and lower side frequencies?
Microphone
Demodulator in a superheterodyne receiver
Modulator in a. radio transmitter
Oscillator in a receiver

⇒ Which are the popular IF frequencies for microwave and radar receivers operating on frequencies in the range 1 to 10 GHz
30, 60 and 70 kHz
3, 6 and 7 kHz
30, 60 and 70 MHz
3, 6 and 7 GHz

⇒ In figure V_CEQ for each transisto
V_CC
0.5 V_CC
0.75 V_CC
0.25 V_CC

⇒ In telephone systems, load is expressed in the unit of
erlangs
decibels
bells
watts

⇒ The response to sinusoidal excitation can be found by
setting s = jω in the network function
setting s = -jω in the network function
taking inverse transform of network function
none of the above

⇒

Assertion (A): Artificial transmission lines are frequently used in laboratories.

Reason (R): An artificial transmission line can be used to represent an actual line and can also be used as a delay circuit, as attenuator, as filter network etc.

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
A is wrong but R is correct

⇒

Assertion (A): When a zener diode breakdown, occurs the voltage across it is constant.

Reason (R): The upper limit of zener current is determined by power handling capacity.

Both A and R are true and R is correct explanation of A
Both A and R are true but R is not a correct explanation of A
A is true but R is false
A is false but R is true

⇒ A speech signal, band limited to 4kHz and peak voltage varying between + 5V and - 5V is sampled at the Nyquist rate. Each sample is quantized and represented by 8 bits. Assuming the signal to be uniformly distributed between its peak values, the signal to noise ratio at the quantizer output is
156 dB
32 dB
48 dB
64 dB