The 3-dB bandwidth of a typical second-order system with the transfer function is given by

1.  

2.  

3.  

4.  

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4
Correct Answer :


Explanation :
No Explanation available for this question

If the open-loop transfer function is a ratio of a numerator polynomial of degree ‘m’and a denominator  polynomial of degree ‘n’,then the integer(n-m) represents the number of

1.  Breakaway points

2.  unstable poles

3.  separate root loci

4.  asymtotes

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4
Correct Answer :

asymtotes


Explanation :
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A small concentration of minority carries is injected into a homogeneous semiconductor crystal at one point.An  electric field of 10V.cm is applied across the crystal and this moves the minority carriers a distance of 1 cm is     20 μ sec.The mobility (in cm2/volt.sec) will be

1.  1,000

2.  2,000

3.  5,000

4.  500,000

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4
Correct Answer :

5,000


Explanation :
No Explanation available for this question

The threshold voltage of an n channel MOSFET can be increased by

1.  increasing the channel dopant concentration

2.  b) reducing the channel dopant concentration

3.    reducing the gate-oxide thickness

4.  reducing the channel length

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4
Correct Answer :

b) reducing the channel dopant concentration


Explanation :
No Explanation available for this question

A class-A transformer coupled,transistor power amplifier is required to deliver a power output of 10 watts.The  maximum power rating of the transistor should not be less than

1.  5W

2.  10W

3.  20W

4.  40W

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4
Correct Answer :

20W


Explanation :
No Explanation available for this question

Data can be changed from spatial code to temporal code and vice-versa by using

1.  ADCs and DACs

2.  shift-registers

3.  synchronous counters

4.  timers

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4
Correct Answer :

ADCs and DACs


Explanation :
No Explanation available for this question

The output of a logic gate is ‘1’when all its inputs are at logic ‘0’.Then gate is either

1.  a NAND or an EX-OR gate

2.  a NOR or an EX-NOR gate

3.  an OR or an EX-NOR gate

4.  a AND or an EX-OR gate

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4
Correct Answer :

a NOR or an EX-NOR gate


Explanation :
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A PLA can be used

1.  As a microprocessor

2.  as a dynamic memory

3.  to realize a sequential logic

4.  to realize a combinational logic

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4
Correct Answer :

to realize a combinational logic


Explanation :
No Explanation available for this question

v(t)=5 [cos(106πt)-sin(103πt)xsin(106πt) represents

1.  DSB suppressed carrier signal

2.  AM signal

3.  SSB upper side band signal

4.  Narrow band FM signal

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4
Correct Answer :

Narrow band FM signal


Explanation :
No Explanation available for this question

Increased pulse-width in the flat-top sampling,leads to

1.  attenuation of high frequencies in reproduction

2.  attenuation of low frequencies in reproduction

3.  greater alising errors in reproduction

4.  no harmful effects in reproduction

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4
Correct Answer :

attenuation of high frequencies in reproduction


Explanation :
No Explanation available for this question
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