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Q1. | In a single sideband suppressed carrier AM system, the modulation index is changed from 0 to 1, the power content of the signal |

A. | will be quarter [Wrong Answer] |

B. | will be doubled [Wrong Answer] |

C. | will increase by 50 percent [Correct Answer] |

D. | will increase by 25 percent [Wrong Answer] |

View Answer
Explanation:-
Answer : CDiscuss 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 :**

⇒ In a second order system ω

*= 10 rad/sec and ζ = 0.1, then ω*

_{n}_{d}=

9.1 rad/sec

9.95 rad/sec

9 rad/sec

1 rad/sec

⇒ In a N-P-N transistor of the emitter junction is reverse biased and collector junction is also reversed biased, the transistor will operate in

active region

saturation region

cut-off region

inverted region

⇒ In FORTRAN 77 IFIX (-73.2) gives the value

73

-73

-7

-73.2

⇒ A meter coil has a resistance of 100 Ω and a full scale deflection current of 10 mA. To convert it into a voltmeter of 0-200 V range, the series resistance should be

20 kΩ

19.9 kΩ

1.9 kΩ

20.1 kΩ

⇒ A limiter circuit can be built using a diode and resistance.

TRUE

FALSE

⇒ An LED has a rating of 2 V and 10 mA. It is used along with 6V battery. The range of series resistance is

0 to 200 Ω

200 - 400 Ω

200 Ω and above

400 Ω and above

⇒

**Assertion (A):** Heaviside partial expansion gives a simple procedure to find inverse Laplace transform of the terms having a complex conjugate pair of roots.

**Reason (R):** If I(*s*) = P(*s*)/Q(*s*) and all roots of Q(*s*) = 0 are simple, *i*(*t*) will have terms with exponentials having real exponents 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

⇒ The noise figure is

3 dB

6 dB

6.6 dB

12 dB

⇒ A transistor has a power rating of 8 W for a case temperature of 25°C. If derating factor is 30 mW/°C, the power rating for 55°C, case temperature is

8 W

7.5 W

7.1 W

6.8 W

⇒ The

*v-i*characteristic shown in the given figure is

thermistor

photoconductor

varistor

none of the above

⇒ Tape recorders use

cone type loudspeakers

horn type loudspeakers

either cone type or horn type loudspeakers

none of the above

⇒ To couple a coaxial line to a parallel wire line it is best to use

slotted line

balun

directional coupler

λ/4 transformer

⇒ In a radar system the solution to blind speed problem is to

use MTI

use monopoles

vary PRF

change Doppler frequency

⇒ The increase in intensity of trace in a CRO causes a change in

beam current

frequency of time base

gain of Y amplifier

accelerating voltage

⇒ In figure, which value of Z

_{L}will cause maximum power to be transferred to the l

2 +

*j*2 Ω

2 -

*j*2 Ω

- 2 Ω

2 Ω

⇒ In a resistor the current is

*i*and the voltage is

*v*. The rate of dissipation of heat at any time

*t*is

*vi*

*vit*

*vt*

*vit*

^{2}

⇒ A series resonant circuit has R = 2 Ω, L = 0.1 H and C =10 μF. At resonance applied voltage = 10 ∠0 V. Voltage across inductance is likely to be

10 ∠0 V

10 ∠45° V

100 ∠90° V

100 ∠-90° V

⇒ The log magnitude curve of factor

*j*ω is a straight line having a slope of 20 dB/decade.

TRUE

FALSE

⇒ The radiation resistance of a rod tubing antenna is

55 Ω to 60 Ω

60 to 100 Ω

0 to 377 Ω

60 to 200 Ω

⇒

Match the following:

List I (Command in WORD) | List II (Meaning) | ||
---|---|---|---|

A. | END | 1. | The bar displays the current position of cursor |

B. | HOME | 2. | Moves cursor to the beginning of current line |

C. | Status | 3. | Moves cursor to end of document |

A-1, B-2, C-3

A-3, B-1, C-2

A-2, B-3, C-1

A-3, B-2, C-1

⇒ Consider following statements :

- Maximum energy of electrons liberated photoelectrically is independent of light intensity
- Maximum energy of electrons liberated photoelectrically varies nonlinearly with frequency of incident light.

statement (1) is true and (2) is false

statement (1) and (2) both are true

statement (1) is false and (2) is true

statement (1) and (2) both are false

⇒ In figure what is value of I

_{C}if β

_{dc}= 100. Neglect V

_{BE5 mA5 μA10 mA10 μA}

⇒ If two time varying signals of equal magnitude and zero phase displacement are applied to X and Y plates respectively; of CRO, the display will be

a straight line

a circle

an ellipse

a square

⇒ For exponential function

*e*

^{-at}the Laplace transform 1/(

*s*-

*a*)

TRUE

FALSE

⇒ D FF can be used as a

differentiator

divider circuit

delay switch

none

⇒ For stable network the real parts of poles and zeros of driving point functions must be

negative

negative or zero

zero

positive

⇒ Which of the following READ statements is correct in FORTRAN 77?

`READ *, HONEY (I), I = 1, 5 `

`READ *, (HONEY (I), I = 1, 5)`

`READ * HONEY I, I = 1, 5`

`READ HONEY I, I = 1, 5`

⇒ Consider the following stateme

1 and 2 only

1, 2 and 4

2 and 3 only

2, 3 and 4

⇒ Which inductor is used at high frequencies?

Cast iron cored

Sheet steel cored

Iron alloy cored

Ceramic cored

⇒ An arithmetic statement in C must be

integer mode arithmetic statement

real mode arithmetic statement

mixed mode arithmetic statement

any of the above