Solve the differential equation +5+6X=0,X=0=5,X(0)=0

1.  5(e-2t-e-3t)

2.  5(e-2t+e-3t)

3.  5(e-3t-e-2t)

4.  -5(e-2t+e-3t)

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4
Correct Answer :

5(e-2t-e-3t)


Explanation :
No Explanation available for this question

For the following network, the values of zin as t→0 and infinity are respectively

1.  ∞, 1

2.  0, 1

3.   1, ∞

4.  1, 0

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4
Correct Answer :

∞, 1


Explanation :
No Explanation available for this question

If F(s) represents the Laplace transform of F9t) then F(s) for f(t) will be

1.  (1-e-st/2)2

2.  (1-e-st/2)2

3.  (1-e-st/2)2

4.  (1-e-st/2)2

View Answer  
4
Correct Answer :

(1-e-st/2)2


Explanation :
No Explanation available for this question

Here H(s) represents the tran-function for a first order low pass R-C filter. Time constant for this R-C filter is 1 second. If X(t)=δ(t2-5t+6) where δ(t) represents impulse at t=0, then y(t) is

1.  e-t(e2+e3)

2.  e-t(e-2+e-3)

3.  e-t(e2-e3)

4.  e-t(e-2-e-3)

View Answer  
4
Correct Answer :

e-t(e2+e3)


Explanation :
No Explanation available for this question

The rms value of the periodic waveform f(t) is

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

A gate pulse shown below is applied to the R-C shown below. Time constant of the RC circuit is 1 second. Find V0(t).

1.  e-t(1-eτ)

2.  e-t(1+eτ)

3.  e-t(1-e-τ)

4.  e-t(1+e-τ)

View Answer  
4
Correct Answer :

e-t(1-eτ)


Explanation :
No Explanation available for this question

If Rd=500 and the switch is changed to position 2 at t=0, then find V(0+) across the coil

1.  520V

2.  1040V

3.  120V

4.  80V

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4
Correct Answer :

1040V


Explanation :
No Explanation available for this question

If Rd=40, find the time taken to dissipate 95% of stored energy of coil.

1.  0.15sec

2.  2sec

3.  0.075sec

4.  1sec

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4
Correct Answer :

0.15sec


Explanation :
No Explanation available for this question

Switch K is closed at t=0. Find I2(s).

1.  1000/s(s2+40s+300)

2.  1000/s(s2+100s+40)

3.  100/s(s2+40s+100)

4.  100/s(s2+100s+40)

View Answer  
4
Correct Answer :

1000/s(s2+40s+300)


Explanation :
No Explanation available for this question

The voltage to be applied to give an output of i(t)=2e-t is

1.  (1+4et)u(t)

2.   δ(t)+4etu(t)

3.  etu(t)

4.  2δ(t)+4etu(t)

View Answer  
4
Correct Answer :

δ(t)+4etu(t)


Explanation :
No Explanation available for this question
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