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Q1. | A transmitter serial current contains |

A. | carrier frequencies [Wrong Answer] |

B. | audio frequencies [Wrong Answer] |

C. | radio frequencies [Correct Answer] |

D. | none of the above [Wrong Answer] |

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Explanation:-
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**Also Read Similar Questions Below :**

⇒ The dual of quantity charge is

current

Voltage

flux

*d*Φ/

*dt*

⇒ In a second order system, the time constant t of exponential envelopes depends

only on damping factor

only on natural frequency

both on damping factor and natural frequency

neither on damping factor nor on natural frequency

⇒ When a lead acid battery is being charged, the specific gravity of the electrolyte

decreases

increases

either increases or decreases

remains the same

⇒ In amplitude modulation, the magnitude of side bands is

*ma*/2 times the carrier amplitude, E

_{c}

*ma*times the carrier amplitude, E

_{c}

2

*ma*times the carrier amplitude, E

_{c}

4

*ma*times the carrier amplitude, E

_{c}

⇒ Which of the following is correct?

Voltages across a capacitance can change instantaneously

Voltages across a capacitance cannot change instantaneously

Charge across a capacitance is always constant

Charge across a capacitance can change instantaneously

⇒ For an amplifier the power gain in decibels will be equal to voltage gain in decibels only when

R

_{0}= 0

R

_{0}= R

_{i}= 90

R

_{0}= R

_{i}

R

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⇒ A JFET behaves as a constant current source when

V

_{GS}= 0

V

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V

_{GS}= V

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V

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⇒ When microprocessor processes both positive and negative numbers, the representation used is

l's complement

2's complement

signed binary

any of the above

⇒ The

*z*-transform of a particular signal is gi

casual and stable

non-casual and stable

non-casual and unstable

casual and unstable

⇒ Kirchoff's voltage law is not valid for a non-linear network

the statement is true

the statement is false

can't say

none of the above

⇒ A 1000 kHz carrier is simultaneously modulated with 300 Hz, 800 Hz and 2 kHz audio sine waves. Which of the following frequency is least likely to be present in the output?

1002 kHz

1000 kHz

999.2 kHz

998.0 kHz

⇒ An unmodulated voltage 10

*V*effective is applied to a dioxide detector in which load resistance is 4 x 10

^{-5}ohms. A micrometer shows that the rectified DC current in this resistance is 30

*A*. The input resistance of the detector is

114 kW

336 kW

384 kW

455 kW

⇒ A system with input

*x*[

*n*] and output

*y*[

*n*] is given as

*y*[

*n*] = (sin 5/6 p

*n*)

*x*(

*n*) The system is

linear, stable and invertible

non-linear, stable and non-invertible

linear stable, non invertible

linear, unstable, invertible

⇒ In the circuit of fi

V

_{a}would always lag V

_{b}

V

_{a}would always lead V

_{b}

V

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phase angle between V

_{a}and V

_{b}would always be 90°

⇒ A series resonant circuit has R = 10 Ω, L = 1 μH and C = 1 mF. If R is increased to 20 Ω the resonant frequency

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decreases

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⇒ If X = 2.5 and Y = 2.5, which of the following expressions would give the result as 5/7?

X + 2.5 / Y + 3.0

(X + 2.5) / Y + 4.5

(X + 2.5) / (Y + 4.5)

(X + 2.5) / Y + 3.5

⇒ In 8085 microprocessor, how many lines are there in data bus?

6

8

2

16

⇒ The directivity of 20 turn helix having a = 12° circumference equal to one wavelength, will be

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6 dB

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⇒ If PRIN = 200.0 and BINT = 0.0525 the result of expression

`INCOME = PRIN * (1 + BINT)`

will be210

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210.5

210.5

⇒ The voltage in a circuit follows the law

*v*= 100 sin ω

*t*if the frequency is 25 Hz, how long will it take for the voltage to rise to 50 volts?

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1/100

*s*

1/300

*s*

1/600

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⇒ A memory system has a 9 chips. If MTBF of one clip is 900 000 hours, MTBF of complete memory system is

900000 hours

100000 hours

8100000 hours

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⇒ Parity means the same as positive or negative number.

TRUE

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⇒ If Nyquist plot has a encirclement of (-1 +

*jo*) point, the system is stable if

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there is one pole of G(

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*s*) in right-half plane

there is no zeros of G(

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none of the above

⇒ The bandwidth of FM for Commercial Purpose is

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85 - 110 MHz

90 - 110 MHz

infinite Range

⇒

Match the following:

List I (Operator in C) | List II (Priority of Operation) | ||
---|---|---|---|

A. | ! | 1. | 1 |

B. | < > | 2. | 2 |

C. | ∗ | 3. | 3 |

D. | = | 4. | 4 |

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

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

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

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

⇒ A system with transfer function H(

*z*) has impulse response

*h*(.) defined as

*h*(2) = 1,

*h*(3) = -1 and

*h*(

*k*) = 0 otherwise. Consider the following statem

Only S2 is true

Both S1 and S2 are false

Both S1 and S2 are true, and S2 is a reason for S1

Both S1 and S2 are true, but S2 is not a reason for S1

⇒ What is the frequency of the modulated carrier wave?

1000 Hz

2000 Hz

1000 kHz

2000 kHz

⇒ In EPROM integrated dose is defined as

UV light intensity x exposure time in seconds

UV light intensity / exposure time in seconds

exposure time in seconds / UV light intensity

none of the above

⇒ Radar principle is used in

detection of aircraft

burglar alarms

garage door openers

all of the above

⇒ Which one of the following is correct?

RAM is a volatile memory but ROM is non-volatile memory

RAM is non-volatile memory but ROM is volatile memory

Both ROM and RAM are volatile but in ROM data is not lost when power is switched off

Both ROM and RAM are non-volatile but in RAM data is lost when power is switched off