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User: singhpralhad18

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Posts by singhpralhad18

<prev • 22 results • page 1 of 3 • next >
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Answer: A: Explain the difference between a JMP instruction and CALL instruction.
... 1) A JMP instruction permanently changes the program counter. A CALL instruction leaves information on the stack so that the original program execution sequence can be resumed. 2) CALL is an instruction that transfers the program control to a sub routine with the intention of coming back to the mai ...
written 7 weeks ago by singhpralhad180
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Answer: A: what are assembler directives? Explain any four with examples.
... Assembly language consists of two types of statements viz. Executable statements- These are the statements to be executed by the processor. It consists of the entire instruction set of 8086. Assembler directives- These are the statements that direct the assembler to do something. As the name says, ...
written 7 weeks ago by singhpralhad180
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Answer: A: What is the difference between ordinary rectifier and precision rectifier?
... ![enter image description here][1] [1]: https://i.imgur.com/8xmXFMX.png ...
written 7 weeks ago by singhpralhad180
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Answer: A: Explain working of peak detector.
... ![enter image description here][1] [1]: https://i.imgur.com/FYYjCwU.png 1.Rectifier circuit gives average value of input signal; but in practice we need peak value of input signal. This is achieved by peak detector circuit. The following figure shows a simple peak detector circuit using diode a ...
written 5 months ago by singhpralhad180
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Answer: A: Explain the functional block diagram of Timer IC555
... ![enter image description here][1] [1]: https://i.imgur.com/W7p26LI.gif Now as shown in figure, there are eight pins for a 555 Timer IC namely, 1.Ground. 2.Trigger. 3.Output. 4.Reset. 5.Control 6.Threshold. 7.Discharge 8.Power or Vcc Pin 1. Ground: This pin has no special function wh ...
written 6 months ago by singhpralhad180
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Answer: A: Explain counter type ADC with neat diagram.
... ![enter image description here][1] [1]: https://i.imgur.com/3XshSLx.png The input to an A to D converter is the analog voltage and output is n it digital word. In counter A to D converter , DAC’s input code is adjusted until DAC’s output comes with ±(1/2) LSB to the analog input which is to be c ...
written 6 months ago by singhpralhad180
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Answer: A: Automatic Gain Control (AGC)
... 1.Automatic gain control (AGC) is a mechanism wherein the overall gain of the radio receiver is automatically varied according to the changing strength of the received signal. This is done to maintain the output at a constant level. 2.Automatic gain control (AGC) is a mechanism wherein the overall ...
written 7 months ago by singhpralhad180
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Answer: A: Pre-emphasis and de-emphasis
... **Pre-emphasis**: The noise suppression ability of FM decreases with the increase in the frequencies. Thus increasing the relative strength or amplitude of the high frequency components of the message signal before modulation is termed as Pre-emphasis. The Fig3 below shows the circuit of pre-emphasi ...
written 7 months ago by singhpralhad180
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Answer: A: Pre-emphasis and de-emphasis
... **Pre-emphasis**: The noise suppression ability of FM decreases with the increase in the frequencies. Thus increasing the relative strength or amplitude of the high frequency components of the message signal before modulation is termed as Pre-emphasis. The Fig3 below shows the circuit of pre-emphasi ...
written 7 months ago by singhpralhad180
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Answer: A: What is need of modulation?
... **Need for modulation**: The baseband signals can be transmitted directly, but the baseband transmission has many limitations which can be overcome using modulation. In the process of modulation, the baseband signal is translated i.e. shifted from low frequency to high frequency. This frequency s ...
written 7 months ago by singhpralhad180

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