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Which theorem assists in replacement of an impedance branch over the network by the other network comprising different circuit components, without affecting the V-I relations throughout the entire network?


A

B

C

D

 View Answer |  Submit Your Solution | Topic: Networks Analysis and Synthesis | Asked In Cocubes |

Answer: Option A

Explanation:

The superposition theorem states that in any linear network containing two or more sources, the response (current) in any element is equal to the algebraic sum of the response (current) caused by individual sources acting alone, while the other sources are inoperative.

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Find RAB


A1 ?

B1/3 ?

C2/3 ?

D2 ?

 View Answer |  Submit Your Solution | Topic: Control System | Asked In Cocubes |

Answer: Option D

Explanation:

Rearranging the circuit we get: The equivalent resistance will be 2ohm.


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The device that generates the basic timing clock signal for the operation of the circuit using crystal oscillator is


Atiming unit

Btiming and control unit

Coscillator

Dclock generator

 View Answer |  Submit Your Solution | Topic: Microprocessor & Microcontrollers | Asked In Cocubes |

Answer: Option C

Explanation:

The basic timing clock signal can be generated by an oscillator circuit using the crystal oscillator.

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The instruction, MOV AX, 1234H is an example of


Aregister addressing mode

Bdirect addressing mode

Cimmediate addressing mode

Dbased indexed addressing mode

 View Answer |  Submit Your Solution | Topic: Microprocessor & Microcontrollers | Asked In Cocubes |

Answer: Option C

Explanation:

Since immediate data is present in the instruction that's 1234H

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The Shannon-Hartley law


Arefers to distortion

Bdefines bandwidth

Cdescribes signaling rates

Drefers to noise

 View Answer |  Submit Your Solution | Topic: Communication Systems | Asked In Cocubes |

Answer: Option C

Explanation:

In information theory, the Shannon–Hartley theorem tells the maximum rate at which information can be transmitted over a communications channel of a specified bandwidth in the presence of noise.

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The data transmission rate of a modem is measured in


Abytes per second

Bbaud rate

Cbits per second

Dmegahertz

 View Answer |  Submit Your Solution | Topic: Communication Systems | Asked In Cocubes |

Answer: Option C

Explanation:

Modems are generally classified by the maximum amount of data they can send in a given unit of time, usually expressed in bits per second (symbol bit(s), sometimes abbreviated "bps"), or bytes per second (symbol B(s)).

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Which of the following is true?


ACC amplifier has a large current gain

BCE amplifier has a large current gain

CCB amplifier has low voltage gain

DCC amplifier has low current gain

 View Answer |  Submit Your Solution | Topic: Electronic Devices & EMMI | Asked In Cocubes |

Answer: Option B

Explanation:

The Common Emitter amplifier has high current and voltage gains. The Common Collector amplifier has unity voltage gain which cannot be regarded as high. The Common base amplifier has a unity current gain and high voltage gain.

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13 dBm is equivalent to


A2 mW

B20 W

C20 Mw

D2 MW

 View Answer |  Submit Your Solution | Topic: Communication Systems | Asked In Cocubes |

Answer: Option C

Explanation:

P(mW) = 1mW * 10(P(dBm)/ 10)
So, 1dBm = 1.258925mW

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A superheterodyne receiver with an IF of 450 kHz is tuned to a signal at 1200 kHz. The image frequency is


A750 kHz

B900 kHz

C1650 kHz

D2100 kHz

 View Answer |  Submit Your Solution | Topic: Communication Systems | Asked In Cocubes |

Answer: Option D

Explanation:

Image frequency = Signal frequency +2* IF = 1200 + 2*450 =2100kHz

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Give the names of the buses present in a controller for transferring data from one place to another?


Adata bus, address bus

Bdata bus

Cdata bus, address bus, control bus

Daddress bus

 View Answer |  Submit Your Solution | Topic: Microprocessor & Microcontrollers | Asked In Cocubes |

Answer: Option C

Explanation:

There are three internal buses associated with processors: the data bus, address bus, and control bus.


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