T he state variable description of an LTI system is given by   where y is the output and u is the input. The system is controllable for  

1.  a1#0,a2=0,a3#0

2.  a1=0,a2#0,a3#0

3.  a1=0,a2#0,a3=0

4.  a1#0,a2#0,a3=0

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4
Correct Answer :

a1=0,a2#0,a3=0


Explanation :
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Assuming both the voltage sources are in phase, the value of R for which maximum power is transferred from circuit A to circuit B is

1.  0.8 Ω

2.  1.4 Ω

3.  2Ω

4.  2.8Ω

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4
Correct Answer :

0.8 Ω


Explanation :
No Explanation available for this question

Consider the differential equation   with y(t)|t=0 = -2  and  dy/dt|t=0.The  numerical value of dy/dt|t-0-

1.  -2

2.  -1

3.  0

4.  1

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4
Correct Answer :

1


Explanation :
No Explanation available for this question

The direction of vector  A is radially outward from the origin with |A|=kr where r2=x2+y2+z2 and is constant the value of n for which .A=0 is

1.  -2

2.  2

3.  1

4.  0

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4
Correct Answer :

-2


Explanation :
No Explanation available for this question

In  the CMOS  circuit  shown,  electron  and hole mobilities are  equal,  and M1 and M2 are  equally sized. The device M1 is in the linear region if

1.  Vin < 1.875 V

2.  1.875 V < Vin < 3.125 V

3.  Vin > 3.125 V

4.   0 < Vin < 5 V

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4
Correct Answer :

Vin < 1.875 V


Explanation :
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A binary symmetric channel (BSC) has a transition probability of 1/8. If the binary transmit symbol X is such that P(X=0) = 9/10, then the probability of error for an optimum receiver will be

1.  7/80 

2.   63/80 

3.  9/10 

4.  1/10 

5.  none

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5
Correct Answer :

none


Explanation :
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The signal m(t) as shown is applied both to a phase modulator (with p k as the phase constant) and a frequency modulator (with Kf  as the frequency constant) having the same carrier frequency The ratio  Kp/Kf (in rad/Hz) for the same maximum phase deviation is 

1.  8π

2.  4π

3.  2π 

4.  π 

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4
Correct Answer :

4π


Explanation :
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The magnetic field along the propagation direction inside a rectangular waveguide with the cross- section shown in the figure is   Hz=3cos(2.094*102x)cos(2.618*102y)cos(6.283*10 10t-βz) The phase velocity   Vpof the wave inside the waveguide satisfies

1.  Vp>c

2.  Vp=C

3.  0

4.   Vp=0

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4
Correct Answer :

 Vp=0


Explanation :
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Let G be a simple undirected planar graph on 10 vertices with 15 edges. If G is a connected graph, then the number of bounded faces in any embedding of G on the plane is equal to  

1.  3

2.  4

3.  5

4.  6

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4
Correct Answer :

6


Explanation :
No Explanation available for this question

The circuit shown is a

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question
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