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Q1. | The function A e where ^{st}s = s + jω represents |

A. | A phasor whose magnitude changes with time [Wrong Answer] |

B. | A phasor whose frequency is ω [Wrong Answer] |

C. | A phasor rotating in counterclockwise direction at angular frequency ω and whose magnitude increases with t [Correct Answer] |

D. | A phasor rotating in clockwise direction at angular frequency ω and whose magnitude increases with t [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 CE amplifier the input impedance is equal to the ratio of

ac base voltage to ac base current

ac base voltage to ac emitter current

ac emitter voltage to ac collector current

ac collector voltage to ac collector current

⇒ The reduced form of the func

A(C D + E F + D E) + D E

(A + C + D + E)(D + E + F)

(C + D + E + A)(A + D + E + F)

A C D + A E F + A(D ⊕ E)

⇒ Barkhausen criterion of oscillation is

Aβ > 1

Aβ = 1

Aβ = < 1

Aβ ≤ 1

⇒ In case of surface waves the field strength at a point is directly proportional to

antenna height

wave frequency

current of the antenna

distance of the point from the antenna

⇒ Figure uses 10 V zener diode. The minimum and maximum current through series resistance

10 mA and 30 mA

20 mA and 40 mA

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⇒ In a class C power amplifier the input signal has a frequency of 250 kHz. If the collector current pulses are 0.1 μs wide, the duty cycle of current waveform is

0.5

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0.0025

⇒ Which of them radiates emission?

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Neither LED nor LCD

⇒ Companding is used in PCM to

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⇒ Find resistance R

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List I (Oscillator) | List II (Features) | ||
---|---|---|---|

A. | Wien Bridge | 1. | RF oscillator, uses two inductors and one capacitor |

B. | Colpitt's | 2. | LC oscillator for radio frequencies uses three capacitances and one inductance |

C. | Hartley | 3. | RC oscillator for audio frequencies |

D. | Clapp | 4. | RF oscillator, uses two capacitances and one inductance |

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

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

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⇒ Directivity gain depends on

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solid angle of the radiated field pattern

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⇒ A device has two resistances 300 Ω and 200 Ω respectively. The noise voltages due to these two resistance calculated separately are 5.38 μV and 4.38 μV respectively. When both of them are used together, the noise voltage will be

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