Question is ⇒ When a complex signals is used to frequency modulate a carrier, the resulting sideband distribution is, Options are ⇒ (A) symmetrical about the carrier, (B) not necessarily symmetrical about the carrier, (C) decided by the predominant sidebands, (D) none of the above, (E) , Leave your comments or Download question paper.

Question is ⇒ When a complex signals is used to frequency modulate a carrier, the resulting sideband distribution is, Options are ⇒ (A) symmetrical about the carrier, (B) not necessarily symmetrical about the carrier, (C) decided by the predominant sidebands, (D) none of the above, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	When a complex signals is used to frequency modulate a carrier, the resulting sideband distribution is
A.	symmetrical about the carrier [Correct Answer]
B.	not necessarily symmetrical about the carrier [Wrong Answer]
C.	decided by the predominant sidebands [Wrong Answer]
D.	none of the above [Wrong Answer]
View Answer 1 -1 Explanation:- Answer : A 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 :

⇒ Race condition occurs in
synchronous circuit
asynchronous circuit
combinational circuit
all the Digital circuit

⇒ In a power diode the reverse recovery time is the time from the instant the forward current is zero to the instant when reverse recovery current has decayed to
50% of peak reverse current
25% of peak reverse current
10% of peak reverse current
zero value

⇒ If F(jω) is the Fourier transform of f(t), then
£ f(- t) = F(jω)
£ f(- t) = F* (jω)
£ f(- t) = F(- jω)
£ f(- t) = F* (- jω)

⇒ A 12 bit ADC is employed to convert an analog voltage of zero to 10 volts. The resolution of the ADC is
2.44 mV
24.4 mV
83.3 mV
1.2 V

⇒ Which of the following array names is invalid in Fortran 77?
B(2, 4)
B(M, 3)
B(M, R)
B(3, 6)

⇒ The ASCII code is for information interchange by a binary code for
alphabet only
number only
alpha-numeric and other common symbols
none of these

⇒ If the p and T circuits in figure are equivalent, then R₁, R₂, R₃ respectively
9 Ω, 6 Ω, 6 Ω
6 Ω, 6 Ω, 9 Ω
9 Ω, 6 Ω, 9 Ω
6 Ω, 9 Ω, 6 Ω

⇒

Assertion (A): A balun is an RF impedance matching transformer.

Reason (R): Sometimes a booster amplifier is used with a TV set.

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

⇒ If t is relaxation time and t_c is average time between collisions, then in an isotropic metal
t = t_c
t < t_c
t_c < t
T = 0.01 t_e

⇒ The approximate value of input impedance of CE amplifier with emitter resistance R_E is given by
h_ie + A_i R_E
h_ie + (1 + h_fe) R_E
h_ie
(1 + h_fe) R_E

⇒ In the two ports network shown in the figure, Z₁₂ and Z₂₁ are, respecti
r_e and βr₀
0 and - βr₀
0 and βr₀
r_e and - βr₀

⇒ If A = 3 + j1 and B = 4 + j3, A + B =
7 ∠45°
10 ∠45°
8.062 ∠29.7°
8.062 ∠73°

⇒ A dominant wave is characterised by which of the following?
No attenuation
Lowest cut off wavelength
Highest cut off wavelength
All of the above

⇒ Generally, the gain of a transistor amplifier falls at high frequency due to the
internal capacitance of the device
coupling capacitor at the I/P
skin effect
coupling capacitor at the O/P

⇒ In a system an input resistance of 20 kΩ causes a noise voltage of 15μV. If two such input resistances each of 20 kΩ are used in parallel, the total noise voltage will be about
15 μV
30 μV
7.5 μV
10.6 μV

⇒ The output of a full adder is
SUM
CARRY
SUM and CARRY
none of the above

⇒ Which of the following cannot be used to demodulate SSB?
Complete phase-shift generator
Product detector
Diode balanced modulator
Bipolar transistor balanced modulator

⇒ A modem is
a form of commutator
a device for digitizing speech
a circuit used for suppressing microwave mterference
an electronic circuit which carries out modulation and demodulation of a carrier frequency

⇒ Pirani gauge is used to measure
very low pressure
high pressure
pressure in the range of 1 atmosphere
fluid flow

⇒ In figure, power in 6 Ω resistor is zero then
202∠45°
20 ∠30°
20 ∠45°
202∠30°

⇒ In the circuit of figure, Thevenin's resistance is 10 &
25 Ω
10 Ω
13.33 Ω
6 Ω

⇒ Consider the following instruments

Tangent galvanometer
Rayleigh current balance
Household energy meter
Hot wire ammeter

Out of above absolute instruments are
1, 2 and 3
1, 2 and 4
1 and 2
2, 3 and 4

⇒ A push pull amplifier balance out
odd harmonics
even harmonics
both odd as well as even harmonics
neither odd nor even harmonics

⇒ In figure V_BE = 0.7 V. The base curren
above 97 μA
about 97 mA
about 75 μA
about 75 mA

⇒ In the basic series inverter circuit, the source supplies load
only in positive half cycle
both in positive and negative half cycles
only in part of positive half cycle
in positive half cycle and part of negative half cycle

⇒

Match the following:

	List I (DOS commands)		List II (Meaning)
A.	DBLSPACE	1.	Deletes a director and its sub-directories
B.	MEM	2.	Displays the amount of used and free memory
C.	SYS	3.	Put a copy of DOS on disk
D.	DELTREE	4.	Compresses files to increase the storage capacity of disc

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

⇒ In 8086
the registers SI and DI are used for string operation
the registers CS and DS are used for string operation
the registers SS and ES are used for string operation
the registers SI and SP are used for string operation

⇒ N circles for a = a₁, and a = a₁ ± 180° n (where n = 1, 2, 3, ....) are the same.
TRUE
FALSE

⇒ Which of the following statement is false?
The gate of DMOSFET may be biased positively, zero or negatively
N-channel enhancement-only MOSFET conducts only when its gate is highly positive
JFET has lower input impedance than MOSFET
The bipolar base is forward biased, JFET gate must also be forward biased

⇒ In 8085 microprocessor, which of the following interrupts is unmaskable interrupts?
RST 5.5
RST 7.5
TRAP
INTR