Question is ⇒ A device with input x(t) and y(t) is characterized by y(t) = x2(t). An FM signal with frequency deviation of 90 kHz and modulating signal bandwidth of 5 kHz is applied to this device. The bandwidth of the output signal is, Options are ⇒ (A) 370 kHz, (B) 190 kHz, (C) 380 kHz, (D) 95 kHz, (E) , Leave your comments or Download question paper.

Question is ⇒ A device with input x(t) and y(t) is characterized by y(t) = x2(t). An FM signal with frequency deviation of 90 kHz and modulating signal bandwidth of 5 kHz is applied to this device. The bandwidth of the output signal is, Options are ⇒ (A) 370 kHz, (B) 190 kHz, (C) 380 kHz, (D) 95 kHz, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	A device with input x(t) and y(t) is characterized by y(t) = x²(t). An FM signal with frequency deviation of 90 kHz and modulating signal bandwidth of 5 kHz is applied to this device. The bandwidth of the output signal is
A.	370 kHz [Wrong Answer]
B.	190 kHz [Wrong Answer]
C.	380 kHz [Correct Answer]
D.	95 kHz [Wrong Answer]
View Answer 1 -2 Explanation:- Answer : C 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 :

⇒

Assertion (A): A demultiplexer can be used as a decoder.

Reason (R): A demultiplexer can be built by using AND gates only.

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 true, R is false
A is false, R is true

⇒ In the output of a DM speech encoder, the consecutive pulses are of opposite polarity during time interval t₁ < t < t₂. This indicates that during this interval
the input to the modulator is essentially constant
the modulator is going through slope overload
the accumulator is in saturation
the speech signal is being sampled at the Nyquist rate

⇒ For a rectangular waveguide (a x b, a > b) to support only the TE₁₀ mode at wavelength which one of the following pairs of in equalities is to be satisfied?
b < λ < 2b; λ > 2a
b < λ < 2b; λ < 2a
a < λ < 2b; λ < 2a
a < λ < 2b; λ > 2a

⇒ In an R-L-C circuit, v(t) = 20 sin (314 t + 5 p/6) and i(t) = 10 sin (314 t + 2p/3). The p.f of the circuit is
0.5 lead
0.866 lag
0.866 lead
0.5 lead

⇒ Which of the following is true in a tape recorder?
Vow is due to variation in motor speed but flutter is due to some other reason
Both vow and flutter are due to variations in motor speed
Flutter is due to variation in motor speed but vow is due to some other reason
Neither vow nor flutter is due to variation in motor speed

⇒ Which of the following material can be used in cable shields?
Copper
Aluminium
Cast iron
Lead

⇒ Which of the following are linear ICs?
RF and IF amplifiers
Wide band amplifier
Audio amplifiers
All of the above

⇒ Short-circuited stubs are used, because open-circuited stubs are
liable to radiate
complex in nature
providing open-circuit environments
unable to provide work over large frequency range

⇒ A chopper
converts constant voltage dc into ac and then into variable voltage dc
converts constant voltage dc into variable voltage dc directly
converts ac of one frequency into ac of another frequency
converts ac to dc

⇒ If a linear time invartant system is exicited by a pure random signal like white noise, the output of the linear system will have which of the following properties?
Output will be a white noise
Output will be periodic
Output will be random
Output will be correlated or coloured noise

⇒ MS Access is a DBMS software.
TRUE
FALSE

⇒ The noise temperature of sky is about __________ °K.
100
273
0
30

⇒ Which mode is usually preferred for cascading?
CE
CB
CC
Any of the above

⇒ Which of the following methods does not cause any reduction in instruction length?
Using program counter
Common source and destination address
Implicit source and destination address
Machine language programming

⇒

Assertion (A): The gain of an FET amplifier can be changed by changing g_m

Reason (R): Most receivers use automatic gain control to counteract changes in volume caused by fading

Both A and R are correct and R is correct explanation for A
Both A and R are correct but R is not correct explanation for A
A is correct R is wrong
A is wrong R is correct

⇒ Find Y in the circuit bel
f₂
f₂
0
∑(0, 1, 2, 3, 5, 6, 9)

⇒ For the differential equation (D³ - D² + D -1) [y(t)] = 0 the root of auxiliary equation
-j, j, 1
-j, j, 2
1, 2, j
1, 2, -j

⇒ The noise sources shot noise, partition noise and thermal noise are associated with which component
BJT
diode
resistor
capacitor

⇒ -8 is equal to signed binary number
10001000
1000
10000000
11000000

⇒ Armoured submarine cable is used
to prevent insulation breakdown due to high voltage
to protect cable at great depths.
to prevent inadverent damage due to ploughing in
for the shallow shore ends of cable.

⇒ In a microprocessor system the stack is used for
starting the program return address whenever a subroutine jump instruction is execute
transmitting and receiving input and output data
starting all important CPU register contents whenever an interrupt is to be serviced
storing program instructions for interrupt service routine

⇒ In an n channel JFET, V_GS = V_GS(off). Then
I_D is zero
I_D may be zero or positive
I_D is positive
I_D may be zero or negative

⇒ If input ac is 10 V_rms, then maximum voltage that will appear across the diode of a half wave rectifier with a capacitor I/P filter will be
10 V
14 V
20 V
28 V

⇒ When subjected to alternating stresses, an insulating material is characterised by complex dielectric constant ∈^'_r - j∈^"_r . In such materials, the dielectric losses under alternating stress is proportional
∈^"_r
both ∈^'_r and ∈^"_r
∈^'_r
(∈^"_r)²

⇒ Which of the following materials has the highest electrical conductivity?
Steel
Silver
Aluminium
Zinc

⇒ A noiseless 3 KHz channel can transmit binary at the rate __________ .
12000 bps
10000 bps
6000 bps
3000 bps

⇒ For a given magnetic material operating in linear mode B = 0.06 T. Assume permeability = 51, then magnetization is:
44836 A/m
46834 A/m
946 A/m
936 A/m

⇒ When the length of antenna is a whole wavelength
the radiation at right angles is zero
the radiation at right angles is maximum
the radiation is zero in all directions
the radiation is maximum in all directions

⇒ A series resonant circuit has R = 10 Ω, L = 1 μH and C = 1 mF. If R is increased to 20 Ω the resonant frequency
increases
decreases
remains constant
may increases or decreases

⇒ If X = 1 in the logic equation [X + Z { Y + (Z + X Y)}] { X + Z (X + Y)} = 1, then
Y = Z
Y = Z
Z = 1
Z = 0