The phase angle of the current “I” with respect to the voltage V1 in the circuit shown in the figure is

1.  00

2.  + 450

3.  – 450

4.  – 900

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4
Correct Answer :

– 900


Explanation :
No Explanation available for this question

The transfer function C(s)/ R(s) of the system, whose block diagram is given below is

1.  

2.  

3.  

4.  

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4
Correct Answer :


Explanation :
No Explanation available for this question

The I. C. amplifier shown in the figure has an input voltage Vi = 0.1 cos (2π × 100t) volts. The waveform of the output voltage V0 is

1.  

2.  

3.  

4.  

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4
Correct Answer :


Explanation :
No Explanation available for this question

If the feedback system shown in the given figure, the noise component of output is given by (assume high loop gain at frequency of interest)

1.  

2.  

3.  

4.  

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4
Correct Answer :


Explanation :
No Explanation available for this question

Three different circuits for biasing junction transistor amplifiers are given below The correct decreasing order of preference of these circuits from the point of view of bias stabilization is

1.  I, II, III

2.  III, II, I

3.  II, III, I

4.  I, III, II

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4
Correct Answer :

II, III, I


Explanation :
No Explanation available for this question

The system shown in the figure has a unit step input in order that the steady error is 10%. The value of K is

1.   0.1  

2.   0.9

3.   1.0

4.  9.0

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4
Correct Answer :

9.0


Explanation :
No Explanation available for this question

The characteristic equation of a closed loop control system is given by s2+9s+16=0. The resonant frequency in radians/sec of the system is

1.  2

2.   2√3

3.  4

4.  4√3

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4
Correct Answer :

4


Explanation :
No Explanation available for this question

The system show in the figure has second-order response with a damping ratio at 0.6 and a frequency of damped oscillations at 10 rad/s. The value of K1 and K2 are respectively

1.  12.5 and 15

2.  156.25 and 15

3.   156.25 and 14

4.  12.5 and 14

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4
Correct Answer :

156.25 and 14


Explanation :
No Explanation available for this question

The maximum phase shift that can be obtained by using a lead compensator with transfer function is equal to

1.  15°

2.   80°

3.  45°

4.   60°

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4
Correct Answer :

80°


Explanation :
No Explanation available for this question

 Consider a simple mass-spring-friction systems as given in the figure. K1 , K3 – spring constant f-friction M-mass F-force x-displacement The transfer function X(S)/F(S)  of the given system will be

1.  

2.  

3.  

4.  

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4
Correct Answer :


Explanation :
No Explanation available for this question
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