What is the angle between vectorand resultant phasor, assuming as reference phasor

1.  tan-1 5/12

2.  tan-1 12/5

3.  -tan-1 5/12

4.  - tan-1 12/5

View Answer  
4
Correct Answer :

tan-1 5/12


Explanation :
No Explanation available for this question

What is the differential equation for the circuit given below

1.  

2.  

3.  

4.  

5.  3

6.  2

7.  1

8.  4

View Answer  
8
Correct Answer :

2


Explanation :
No Explanation available for this question

A system is described by the following differential equation: For X(t)=2u(t), find output y(t)

1.  u(t)+2e-t+e-2t

2.  u(t)-2e-t+e-2t

3.  u(t)+e-t+2e-2t

4.  u(t)-e-t+2e-2t0

5.  2

6.  3

7.  4

8.  1

View Answer  
8
Correct Answer :

3


Explanation :
No Explanation available for this question

For the circuit shown in figure below If switch is closed at t=0, write differential equation at va

1.  diL/dt-5=3Va

2.  diL/dt +5=3Va

3.  diL/dt =3Va

4.  None of these

5.  24

6.  16

7.  36

8.  atleast 20 factors

View Answer  
8
Correct Answer :

16


Explanation :
No Explanation available for this question

What will be the differential equation in loop-1

1.  

2.  

3.  

4.  None of these

5.  288

6.  768

7.  180

8.  None of the above

View Answer  
8
Correct Answer :

180


Explanation :
No Explanation available for this question

. A series R-L-C circuit is excited by an ac voltage v(t)=1sint. If L=10H, C=0.1F then peak value of voltage across R will be

1.  0.707

2.  1

3.  1.414

4.  Indeterminate as R is not given

5.  8 factors

6.  6 factors

7.  6 or 8 factors

8.  7 factors

View Answer  
8
Correct Answer :

8 factors


Explanation :
No Explanation available for this question

In the given circuit if V is taken as reference phasor then which of the following is true

1.  I leads from V and IL

2.  I lags from V

3.  I and V are in phase

4.  None of these

View Answer  
4
Correct Answer :

I leads from V and IL


Explanation :
No Explanation available for this question

In the series R-C circuit shown in the below, the r.m.s value of the voltage E is 1V. If the average power dissipated is equal to 500mW, then phase angle between voltage and current will be

1.  900

2.   600

3.  450

4.  300

View Answer  
4
Correct Answer :

600


Explanation :
No Explanation available for this question

What is the angle of

1.  48.40

2.  -48.40

3.  -900

4.  900

View Answer  
4
Correct Answer :

48.40


Explanation :
No Explanation available for this question

In the circuit shown in the figure, Vs=cos 2t, Z2=1+j, C1 is so chosen so that i=1/2 cos t, then the value of the capacitor C1 will be

1.   2F

2.  1F

3.  0.5F

4.   0.25F

View Answer  
4
Correct Answer :

0.25F


Explanation :
No Explanation available for this question
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