Question is ⇒ An audio signal (say from 50 Hz to 10000 Hz) is frequency translated by a carrier having a frequency of 10<sup>6</sup> Hz. The values of initial (without frequency translation) and final (after frequency translation) fractional change in frequency from one band edge to the other are, Options are ⇒ (A) 200 and 1.01, (B) 200 and 10.01, (C) 200 and 100.1, (D) 200 and 200, (E) , Leave your comments or Download question paper.

Question is ⇒ An audio signal (say from 50 Hz to 10000 Hz) is frequency translated by a carrier having a frequency of 10<sup>6</sup> Hz. The values of initial (without frequency translation) and final (after frequency translation) fractional change in frequency from one band edge to the other are, Options are ⇒ (A) 200 and 1.01, (B) 200 and 10.01, (C) 200 and 100.1, (D) 200 and 200, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	An audio signal (say from 50 Hz to 10000 Hz) is frequency translated by a carrier having a frequency of 10⁶ Hz. The values of initial (without frequency translation) and final (after frequency translation) fractional change in frequency from one band edge to the other are
A.	200 and 1.01 [Correct Answer]
B.	200 and 10.01 [Wrong Answer]
C.	200 and 100.1 [Wrong Answer]
D.	200 and 200 [Wrong Answer]
View Answer 1 -3 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 :

⇒ Given figure shows a 90° sector of spherical reflector with vertex 'V', centre of curvature 'C' and equal distances VD, DF, FE and EC. When a beam of EM wave is incident parallel to the axis, all the energy will pass through the reg
VD
DF
EF
EC

⇒ In the absence of noise, if C is channel capacity in bits/s, δf is channel bandwidth in Hz and N is number of coding levels. Then
C = log₂ N
C = (δf) log₂ N
C = 2 (δf) log₂ N
C = 0.5 (δf) log₂ N

⇒ Above a certain temperature, the specific heat of a metal becomes constant. This temperature is called
Debye temperature
Curie temperature
Neel temperature
Transition temperature

⇒ In TV transmitter, visual exciter may consist of

Video processing unit
Visual modulator
VSB filter
Delay equaliser
Frequency converter

Which of the above are actually a part of visual exciter?
1, 2 and 3
2, 3 and 4
1, 2, 3 and 4
1, 2, 3, 4 and 5

⇒ The advantage of Weinbridge oscillator over the phase shift oscillator is that oscillator the frequency may be varied over a range of
0.0430555555555556
0.04375
0.0451388888888889
0.0486111111111111

⇒ A time varying magnetic field produces
electric field only
magnetic field only
both magnetic and electric fields
none of the above

⇒ The communicating capacitor reduces turn on time because
it acts as an open circuit
it allows maximum base circuit to flow
it aids in removing the excess carrier from the base region
none of these

⇒ An arithmetic statement in C must be
integer mode arithmetic statement
real mode arithmetic statement
mixed mode arithmetic statement
any of the above

⇒ The circuit shown below is functionally equivalen
NOR gate
OR gate
EX-OR gate
NAND gate

⇒ The drift velocity of electrons and holes is proportional to electric field strength.
TRUE
FALSE

⇒ The addition of p type impurity to intrinsic material creates allowable energy levels.
slightly below conduction band
slightly above conduction band
slightly below valence band
slightly above valence band

⇒ A potential of 7 V is applied to a silicon diode. A resistance of 1 K ohm is also in series with the diode. The current is
7 mA
6.3 mA
0.7 mA
0

⇒ Which type of gate is in the given fig
NOR
OR
NAND
EX-OR

⇒ The encapsulation of transistor is necessary for
preventing radio interference
preventing photo-emission effects
avoiding loss of free electrons
mechanical ruggedness

⇒ When UJT is used for thyristor gate signal, the output of UJT is
sine wave
square wave
saw tooth wave
either (a) or (c)

⇒

Assertion (A): In register indirect addressing mode of 8085, the address of operand is in the specified register.

Reason (R): An example of register indirect addressing mode is MOV, A, M..

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 R is wrong
A is wrong R is correct

⇒ Which coupling produces the minimum interference with frequency response?
RC coupling
Transformer coupling
Direct coupling
Impedance coupling

⇒ In a 3 phase bridge inverter with 180° mode of operation the numbers of thyristors conducting at one time are
1
2
3
4

⇒ The input gate current of a FET is
a few amperes
a few milli amperes
a few micro amperes
negligible

⇒ The function of a choke in a fluorescent lamp is
at the time of starting only
during the working of time but not at starting time
both at the time of starting and during working
none of the above

⇒ In which of the following 8085 instructions is the 8 bit number in accumulator adjusted to form two four bit BCD numbers
DAD rp
DAA
DCX rp
ADC M

⇒ For 200V r.m.s. value triangular wave, the peak voltage will be
200 V
222 V
280 V
346 V

⇒ Crossover distortion behaviour is characteristic of
class A O/P stage
class B O/P stage
class AB output stage
common pulse O/P state

⇒ In envelope detection of an AM waveform
One side band and full-ampiitude carrier are needed
Both side bands and full-amplitude carrier are needed
Only two side bands are needed
Upper side band and part of carrier are needed

⇒ The output V₀ in figur
-100 V
-100 mV
10 V
10 mV

⇒ A power transistor dissipates 5 W. If ambient temperature is 30° and case to air thermal resistance is 10° C/W, the case temperature is
80°C
20°C
32°C
305°C

⇒ A microprocessor is generally
single chip SSI
single chip MSI
single chip LSI
any of the above

⇒ Spot the odd one out
aluminium
silver
porcelain
copper

⇒ In high power AM transmission modulation is done at
IF stage
RF power
buffer stage
oscillator stage

⇒ An ideal Op-amp is an ideal
voltage controlled current source
voltage controlled voltage source
current controlled current source
current controlled voltage source