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Q1. | Which of the following can provide two or more voice circuits with the same carrier? |

A. | SSB [Wrong Answer] |

B. | Carrier reinsertion [Correct Answer] |

C. | Lincompex [Wrong Answer] |

D. | Independent side band system [Wrong Answer] |

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Explanation:-
Answer : BDiscuss it below :!! OOPS Login [Click here] is required to post your answer/resultHelp other students, write article, leave your comments |

**Also Read Similar Questions Below :**

⇒ The depletion layer consists of immobile ions.

TRUE

FALSE

⇒ The stage marked X in the architecture shown below of a two stage op-amp

Direct coupled amplifier

Buffer amplifier

Level shifter

Blocking oscillator

⇒ Which of the following measurements can be done using a counter?

- Pulse duration
- Interval between two pulses
- Amplitude of the pulse
- Rise time of a pulse

1 and 2

2 and 3

1 and 4

2 and 4

⇒ The life time of a geosynchronous communication

5

10

20

50

⇒ In an

*n*channel MOSFET, the substrate is connected

to negative terminal of battery

to positive terminal of battery

to either positive or negative terminal of battery

none of the above

⇒ The input voltage for starting oscillations in an oscillator is caused by

negative feedback

positive feedback

noise voltage in resistors

a special generator

⇒ In the circuit of figure, the waveshape of load current when thyristor conducting

constant

increasing exponentially

decreasing exponentially

either (b) or (c)

⇒ Which of the following combinations has no phase inversion of the signal?

Two CE stages

CE and CC stages

Three CE stages

CE stages and emitter follower

⇒

Match the following:

List I | List II | ||
---|---|---|---|

A. | Former | 1. | Produces deflecting torque |

B. | Coil | 2. | Provides base for coil |

C. | Core | 3. | Makes the magnetic field radial |

D. | Spring | 4. | Provides controlling torque |

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

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

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

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

⇒ Find the Fourier transform of the half cosine pulse as shown bel

0.5 {sin

*c*[0.25(

*f*- 1)] + sin

*c*[2.5(

*f*+ 1)]}

0.5 {sin

*c*[0.5(

*f*- 1)] + sin

*c*[0.5(

*f*+ 1)]}

0.25 {sin

*c*[0.25(

*f*- 1)] + sin

*c*[0.25 (

*f*- 1)]}

0.25 {sin

*c*[0.5(

*f*- 1)] + sin

*c*[0.5(

*f*- 1)]}

⇒ Which of the following are difficult to be fabricated in a monolithic IC?

Inductors

Large capacitors

Small capacitors

Both (a) and (b)

⇒ Four terminal approach is used in measuring low resistance because it

eliminates thermoelectric energy

eliminates stray capacitance

eliminates stray inductance

eliminates the effect of leads and contacts

⇒ A dependent source

may be a current source or voltage source

is neither a current source nor a voltage source

is always a voltage source

is always a current source

⇒ The distance between target and radar is reduced to half. Power received increases by

42751

42739

4 times

16 times

⇒ If the intrinsic resistivity at 300°K is 0.37

*ohm-m*and the electron and hole mobilities at 300°K are 0.28 and 0.15

*m*

^{2}/volt-sec, then the intrinsic carrier concentration of Germanium is __________ .

2.92 x 10

^{19}/

*m*

^{3}

2.92 x 10

^{-19}/

*m*

^{3}

1.92 x 10

^{19}/

*m*

^{3}

3.92 x 10

^{19}/

*m*

^{3}

⇒ In an hydrogen atom, an electron moves in the field of a proton. The stability of orbit requires equilibrium between coulomb's force and centrifugal force.

TRUE

FALSE

⇒ A series RLC circuit has a resonant frequency of 2000 Hz. The maximum voltage across C is likely to occur at a frequency of about

1000 Hz

4000 Hz

2025 Hz

1975 Hz

⇒ For the system in the given figure the root l

is on real axis between points

*s*= -1 and

*s*= -3.6

is on real axis between points

*s*= 0 and

*s*= -1

is on real axis between points

*s*= -3.6 and

*s*= ∞

is on real axis between points

*s*= 0 and

*s*= -3.6

⇒ The diameter and thickness of CD are

6 cm and 1.2 mm

6 cm and 0.6 mm

12 cm and 0.6 mm

12 cm and 1.2 mm

⇒ Which of the following terms are equivalent?

- A ⊕ B ⊕ C
- A ⊕ B ⊙ C
- A ⊙ B ⊕ C
- A ⊙ B ⊙ C

1 and 4; 2 and 3

1 and 3

2 and 3

1, 2 and 4

⇒ Consider the following as regards cumulative disribution function F(

*x*)

- 0 ≤ F(
*x*) ≤ 1 - F(- ∞) = 0
- F(∞) = 1
- F(
*x*_{1}) ≤ F(*x*_{2}) If*x*_{1}<*x*_{2}

1 and 2 only

1, 2 and 3 only

1, 2, 3 and 4

2 and 4

⇒ In p mode of operation of magnetron the spikes due to phase focussing effect rotate at an angular velocity corresponding to

one pole/cycle

two pole/cycle

four pole/cycle

six pole/cycle

⇒ Karnaugh map can not be drawn when the number of variables is more than 4

TRUE

FALSE

⇒ The most commonly used logic family is

ECL

TTL

CMOS

PMOS

⇒ The triangular wave of the given figure can be written as

*v*(

*t*) =

*u*(

*t*) -

*tu*(

*t*) + (

*t*- 1)

*u*(

*t*

TRUE

FALSE

⇒ Dielectric constant of transformer oil is about

1

4

10

20

⇒ Consider the signal S(

*t*) shown bel

8

12

16

18

⇒ A TRIAC can be turned on :

by applying a positive signal to gate

by applying a negative signal to gate

by applying either positive or negative signal to gate

none of the above

⇒ The pre-emphasis circuit is used

prior to modulation

after demodulation

for low frequency components of the signal

none of the above

⇒ For representing two sinusoidal voltages on a phasor diagram

Both voltages must be of the same frequency

Both voltages must be sinusoidal but may be of different frequencies

One of the voltages must be of 50 Hz

The frequency of one must be integral of that of other