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Q1. | The main systems used for generation of SSB are |

A. | filter method [Wrong Answer] |

B. | phase cancellation method [Wrong Answer] |

C. | third method [Wrong Answer] |

D. | all of the above [Correct Answer] |

View Answer
Explanation:-
Answer : DDiscuss 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 :**

⇒ Consider the following statements about Rhombic antenna

- It is non resonant
- It is a broad band antenna
- It is ideally suited for HF transmission

1, 2, 3

1, 3 only

2, 3 only

1 only

⇒ In a solar cell, the photovoltaic voltages is the voltage at which the resultant current is

positive

zero

negative

rated current

⇒ In an RC series circuit excited by dc voltage E, the current at

*t*= 0 is

E/R

E/C

zero

infinity

⇒ The input resistance of JFET ideally approaches

zero

1 ohm

100 ohm

infinity

⇒ In a network

the number of tree branches is always less than the number of links

the number of tree branches is always more than the number of links

the number of tree branches and links are always equal

the number of tree branches has no relation with the number of links

⇒ A 3 phase induction motor is controlled by voltage and frequency control such that the ratio V/

*f*is constant. At 50 Hz, the speed is 1440 rpm. At 25 Hz, the speed is likely to be

about 1350 rpm

about 720 rpm

about 360 rpm

either (b) or (c)

⇒ The resonant frequency of the circuit shown in figure

1/22p Hz

1/2p Hz

1/4p Hz

1/2p Hz

⇒ To determine the polarity of voltage drop across a resistor, it is sufficient to know

direction of current through the resistor

direction and magnitude of current through the resistor

direction and magnitude of current and value of resistance

magnitude of current through the resistance

⇒ The rule that resistivity of conductors can be separated into two parts viz. temperature independent and temperature dependent is known as

Matthiessen's rule

Debye rule

Curie rule

Onne's rule

⇒ For 8 bit representation the minimum positive and minimum negative numbers are

2

^{-128}each

2

^{-28}and 2

^{-127}

2

^{-127}and 2

^{-128}

2

^{-127}each

⇒ The mean life time of the minority carriers is in the range of a few

seconds

milli seconds

micro seconds

nano seconds

⇒ The output

*y*(

*t*) of a linear time invariant system is related to its input

*x*(

*t*) by the following equation

*y*(

*t*) = 0.5

*x*(

*t*-

*t*

*+ 1) +*

_{d}*x*(

*t*-

*t*

*) + 0.5*

_{d}*x*(

*t*-

*t*

*+ 7). The filter transfer function*

_{d}*H*(ω) of such a system is given by

(1 + cos ωt)

*e*

^{-jωt}

*d*

(1 + 0.5 cos ωt)

*e*

^{-jωt}

*d*

(1 + cos ωt)

*e*

^{jωt}

*d*

(1 - 0.5 cos ωt)

*e*

^{-jωt}

*d*

⇒ Thermal run away of a transistor occurs when

heat dissipation from transistor is excessive

transistor joints melt due to high temperature

there is excessive leakage current due to temperature rise

none of the above

⇒ One can format a disc using window explorer.

TRUE

FALSE

⇒ Wagner earthing device eliminates

all stray capacitance in the circuit

stray capacitances between components

stray capacitance between detector terminal and ground

mutual coupling between components

⇒ Vividh Bharti programme is transmitted in

short wave

medium frequency

very high frequency

none of the above

⇒ The discrete time system describes by

*y*(

*n*) =

*x*(

*n*

^{2}) is

casual, Linear, time varying

casual, non-linear, timevari

non-casual, Linear, time invariant

non-casual, non-linear, time variant

⇒ A Darlington pair consist of

two CB amplifiers

two CC amplifiers

two cascaded CC amplifiers

two cascaded CE amplifiers

⇒ The ending part of the popular teleserial Mahabharat will be beamed to the viewers

WESTAT

INSAT-IC

ARABSAT

INSAT-ID

⇒ In 8085 microprocessor system, what will be the total delay provided by the following loop.

*msec*

3.514

*msec*

2.644

*msec*

3.166

*msec*

⇒ Decimal number 46 in excess 3 code =

1000 1001

0111 1001

0111 1111

1000 1111

⇒ The logic circuit given below converts a binary code

*y*

_{1}

*y*

_{2},

*y*

_{3}

Excess - 3 code

Gray code

BCD code

Hamming

⇒ The induced magnetic dipole moment has a direction opposite to the applied magnetic field.

TRUE

FALSE

⇒ To avoid the effect of stray magnetic fields in ac bridge we can use

magnetic screening

Wagner earthing device

wave filter

transformer

⇒ Stepper motors find applications in

X-Y plotters

numerically controlled machining equipment

printers

all of the above

⇒ A rectangular wave guide is designed to propagate at the dominant mode TE

_{10}at a frequency of 5 GHz. The cut-off frequency is 0.8 of signal frequency. The ratio of the guide width to height is 2. The dimensions of the guide are

3.75 cm, 1.875 cm

4 cm, 2 cm

8 cm, 4 cm

2.54 cm, 1.27 cm

⇒

**Assertion (A):** Class A and Class B amplifier predominate in audio applications.

**Reason (R):** Class C amplifier is used at radio frequencies.

Both A and R are correct and R is correct explanation for A

Both A and R are correct but R is not correct explanation for A

A is correct R is wrong

A is wrong R is correct

⇒ Which of the following effects is used in measurement of magnetic flux?

Hall effect

Seeback effect

Piezo electric effect

Photoelectric effect

⇒ In the periodic train of rectangular pulses F

_{0}= (V

_{0}/T)

*d*

TRUE

FALSE

TRUE

FALSE

⇒ A bistable multivibrator

has no stable state

has one stable state

has two stable state

none of the above

⇒ A bistable multivibrator

has no stable state

has one stable state

has two stable state

none of the above