Assuming zero initial condition, the response y(t) of the system given below to a unit step input u(t) is

1.   u(t)

2.   tu(t)

3.  t2/2(t)

4.   e-tu(t)

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4
Correct Answer :

tu(t)


Explanation :
No Explanation available for this question

The minimized expression for the given K map (A: don’t care) is

1.  

2.  B+AC

3.  C+AB

4.  ABC

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4
Correct Answer :


Explanation :
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Consider the following J-K flip-flop: In the given J-K flip-flop,   And K=1. Assume that the flip-flop was initially cleared and then clocked for 6 pulses. What is the sequence at the Q point

1.  010000

2.  011001

3.  010010

4.  010101

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4
Correct Answer :

010101


Explanation :
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The  magnitude and phase transfer functions for a distortion less filter should respectively be

1.   (Magnitude)                                                (Phase)   Linear                                                         Constant  

2.   (Magnitude)                                                (Phase)            Constant                                                Constant  

3.   (Magnitude)                                                (Phase)   Constant                                                        Linear      

4.   (Magnitude)                                                (Phase)   Linear                                                         Linear   

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4
Correct Answer :

(Magnitude)                                                (Phase)

 

Constant                                                        Linear

 

 

 


Explanation :
No Explanation available for this question

The pole-zero pattern of a certain filter is shown in Fig.1. The filter must be of the following type

1.   Low –pass

2.  High-pass

3.  All-pass

4.  Band-pass

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4
Correct Answer :

All-pass


Explanation :
No Explanation available for this question

Let  , and h(t0 is a filter matched to g(t). If g(t) is applied as input to h(t), then the Fourier transform of the output is

1.  

2.  

3.  

4.  

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4
Correct Answer :


Explanation :
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A band limited signal is sampled at the Nyquist rate. The signal can be recovered by passing the samples through

1.   An RC filter

2.  An envelope detector

3.  A PLL

4.  An ideal low-pass filter with the appropriate bandwidth

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4
Correct Answer :

An ideal low-pass filter with the appropriate bandwidth


Explanation :
No Explanation available for this question

A band-limited signal with a maximum frequency of 5 khz is to be sampled According to the sampling theorem, the samplimg frequency which is not valid is

1.   5 kHz

2.  12 kHz

3.  15 kHz

4.  20 kHz

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4
Correct Answer :

5 kHz




Explanation :
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A 4 GHz carrier is DSB_SC modulated by a low pass message signal with maximum frequency of 2 MHz. The resultant signal is to be ideally  samples. The minimum frequency of the sampling impulse train should be

1.  4 MHz

2.  8 MHz c.

3.   8 GHz

4.   8.004 GHz

View Answer  
4
Correct Answer :

8 MHz

c.


Explanation :
No Explanation available for this question

The Nyquist sampling interval, for the signal (700t)+Sinc(500t) is

1.   (1/350)sec

2.  (π/350)sec

3.   (1/700)sec

4.  (π/175)sec

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4
Correct Answer :

(1/700)sec


Explanation :
No Explanation available for this question
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