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Q1. | The simplest method of suppression of unwanted side band in AM is |

A. | filter method [Correct Answer] |

B. | phase shift method [Wrong Answer] |

C. | third method [Wrong Answer] |

D. | both (a) and (b) [Wrong Answer] |

View Answer
Explanation:-
Answer : ADiscuss 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 :**

⇒ Nichols chart consists of M and N locii in log magnitude versus phase diagram.

TRUE

FALSE

⇒ In figure, the voltage V

_{1}= 4∠0 V. The source voltage V

_{28 - j8 volts4 - j4 volts8 - j4 volts8 - j16 volts}

⇒ For a 2 port network, the O/P short circuit current was measured with a 1 volt source at the I/P then value of the current gives

*h*

_{12}

*y*

_{12}

*h*

_{21}

*y*

_{21}

⇒ In an inverting amplifier using op-amp the current input to the inverting terminal

is equal to the current through feedback resistance

is less than the current through feedback resistance

is more than the current through feedback resistance

may be equal to, less or more than current through feedback resistance

⇒ It is required to study transients during switching process. Which CRO should be preferred?

Ordinary CRO

Dual beam CRO

Dual trace CRO

Storage oscilloscope

⇒ Which of the following terms is not applicable to Yagi-Uda array?

High gain

Folded dipole

Parasitic elements

Good bandwidth

⇒

Match the following:

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

A. | Flash converter ADC | 1. | requires conversion time of a few μs |

B. | Dual slope ADC | 2. | requires DAC |

C. | Successive approximation ADC | 3. | minimizes the effect of power supply interference |

4. | requires complex hardware | ||

5. | is a tracking ADC |

A-2, B-3, C-4

A-4, B-3, C-2

A-5, B-4, C-3

A-1, B-2, C-5

⇒ Fourier transform is defined for

periodic

non-periodic

finite duration

all

⇒ In 8085 the time required to add two 32 bit numbers is (if clock frequency is 5 MHz)

about 1

*ns*

about 1 μ

*s*

about 30 μ

*s*

about 100 μ

*s*

⇒ In an integral controller

the output is proportional to input

the rate of change of output is proportional to input

the output is proportional to rate of change of input

none of the above

⇒ In Pulse Code Modulation system

large bandwidth is required

quantising noise can be overcome by companding

quantising noise can be reduced by decreasing the number of standard levels

suffers from the disadvantage of its incompatibly with TDM

⇒ A pair of 21114s can store __________ words of __________ bits each.

2114, 8

1024, 8

4228, 16

2114, 16

⇒ A uniform plane wave in the free space is normally incident on an infinitely thick dielectric slab (dielectric constant ε

*= 9). The magnitude of the reflection coefficient is*

_{r}0

0.3

0.5

0.8

⇒ What is the major cause of creeping in an energy-meter?

Over compensation for friction

Mechanical vibrations

Excessive voltage across the potential coil

Stray magnetic fields

⇒ At 0 K the forbidden energy gap in intrinsic semi conductor is about

10 eV

6 eV

1 eV

0.2 eV

⇒ PWM can be generated

by a free running multivibrator

by integrating the signal

by a monostable multivibrator

by differentiating pulse position modulation

⇒ An antenna operates effectively when its dimensions are

of the order of magnitude of wavelength to be transmitted

very small than the magnitude of wavelength to be transmitted

very large than the magnitude of wavelength to be transmitted

either (a) or (b)

⇒ Ohmic range of carbon composition resistors is

10 to 100 ohms

10 to 10 K ohms

10 to 200 ohms

10 to 25 M ohms

⇒ The M circle for M = 1 is the

straight line at

*x*= - 0.5

critical point (-l,

*jo*)

circle with

*r*= 0.33

circle with

*r*= 0.67

⇒ An antenna is 30 metre high. The frequency is 1 MHz. The radiation resistance is about

1500 Ω

150 Ω

15 Ω

1.5 Ω

⇒ For a given voltage four heating coils will give maximum heat when connected

in parallel

in series

with two parallel pairs in series

with one pair in parallel and the other two in series

⇒ The input impedance for folded dipole antenna (two half dipole) is

73

*n*

^{2}

377

*n*

^{2}

73

*n*

377

*n*

⇒ To find the current in a 20 Ω resistance connected in a circuit, Norton's theorem is used. I

_{N}= 7.5 A. The current though 20 Ω resistance.

is 7.5 A

is less than 7.5 A

may be 7.5 A or less

may be 7.5 A or more or less

⇒ The Lissajous pattern observed on screen of CRO is a straight line inclined at 45° to x axis. If

*X*-plate input is 2 sin ω

*t*, the

*Y*-plate input is

2 sin ω

*t*

2 sin (ω

*t*+ 45°)

2 sin (ω

*t*- 45°)

22 sin ω

*t*+ 45°)

⇒ Find I for circuit shown b

0.125

0.0416666666666667

0.0833333333333333

0

⇒ The maximum temperature limit of class B insulation is

90°C

105°C

120°C

130°C

⇒ On the basis of the type of chemical bonds, solids may be classified into

ionic crystals

ionic and valence crystals

ionic crystal, valence crystals and metals

ionic crystals, valence crystals, metal and vander wall crystals

⇒ When satellite radio beam is aimed towards earth, it illuminates on the earth for an oval shaped area called

foot print

beam area

satellite service area

radiated area

⇒ A microstrip line has dielectric having relative permittivity ∈

*. The effective dielectric constant is*

_{r}more than ∈

_{r}equal to 1

less than ∈

_{r}either

*a*or

*b*

⇒ For a type 0 system and unit ramp input, the steady state error is

0

∞

1

1/K

_{V}