A  741-type  op-amp  has  a  gain-bandwidth  product  of  1  MHz.  A  non-inverting amplifier using this op-amp and having a voltage gain of 20 dB will exhibit a 3-dB bandwidth of

1.  50 KHz

2.  100 KHz

3.  1000/17 khz

4.  1000/7.07

View Answer  
4
Correct Answer :

100 KHz


Explanation :
No Explanation available for this question

Three  identical  RC-coupled  transistor  amplifiers  are  cascaded.  If  each  of  the  amplifiers has a frequency response as shown in Figure 1.8, the overall frequency response is as given in

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

4-bit 2’s complement representation of a decimal number is 1000. The number is

1.  +8

2.  0

3.  -7

4.  -8

View Answer  
4
Correct Answer :

+8


Explanation :
No Explanation available for this question

If the input to the digital circuit (Figure 1.10) consisting of a cascade of 20 XOR-gates is X, then the output Y is equal to

1.  0

2.  1

3.  

4.  X

View Answer  
4
Correct Answer :

1


Explanation :
No Explanation available for this question

The number of comparators required in a 3-bit comparator type ADC is

1.  2

2.  3

3.  7

4.  8

View Answer  
4
Correct Answer :

2


Explanation :
No Explanation available for this question

If the transistor in Figure 1.12 is in saturation, then

1.   IC is always equal to βdcIB  

2.  IC is always equal to -βdcIB

3.  IC is greater than or equal to βdcIB

4.  IC is less than or equal to βdcIB

View Answer  
4
Correct Answer :

IC is less than or equal to βdcIB


Explanation :
No Explanation available for this question

Consider a system with the transfer function  Its damping ratio will be 0.5 when the value of k is

1.  2/6

2.  3

3.  1/6

4.  6

View Answer  
4
Correct Answer :

6


Explanation :
No Explanation available for this question

Which of the following points is NOT on the root locus of a system with the open   loop transfer function 

1.  s = -j√3

2.  s= - 1.5

3.  s= -3

4.  s = -∞

View Answer  
4
Correct Answer :

s= -3


Explanation :
No Explanation available for this question

The  phase  margin  of  a  system  with  the  open-loop  transfer  function

1.  0°

2.  63.4°

3.  90°

4.  ∞

View Answer  
4
Correct Answer :

63.4°


Explanation :
No Explanation available for this question

The  transfer  function  Y(S) U(S)   of  a  system  described  by  the  state  equations   x(t) = -2x(t) + 2u(t) and y(t) = 0.5x(t) is

1.  0.5/(s-2)

2.  1/(s-2)

3.  0.5/(s+2)

4.  1/(s+2)

View Answer  
4
Correct Answer :

0.5/(s-2)


Explanation :
No Explanation available for this question
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