Which of the following statement is true regarding mode of the metallic wave guides shown

1.  Only p has no cutoff-frequency

2.  Only Q has no cutoff-frequency

3.  Only R has no cutoff-frequency

4.  all three have cut-off frequency

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4
Correct Answer :

Only p has no cutoff-frequency


Explanation :
No Explanation available for this question

A fair coin is tossed 10 times.what is the probability that ONLY the first two tosses will yield heads

1.  (1/2)2

2.  10C2(1/2)2

3.  (1/2)10

4.  10C2(1/2) 10

View Answer  
4
Correct Answer :

(1/2)10


Explanation :
No Explanation available for this question

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

In the Taylor series expansion of exp(x) + sin(x) about the point x =  π, the coefficient of (x-π)2 is

1.  exp(π)

2.  0.5 exp(π)

3.  exp(π) + 1

4.  exp (π) - 1

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4
Correct Answer :

0.5 exp(π)


Explanation :
No Explanation available for this question

If the  spectral power density of stationary random process is a sine Squared function of  frequency ,the shape of its autocorrelation is

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

Px (x) = M exp(-2 | x |) - N exp(-3 | x |) is the probability density function for the real random variable X, over  the entire x axis. M and N are both positive  real numbers. The equatio relating M and N is

1.  M - (2/3)N = 1

2.  2M + (1/3)N = 1

3.  M + N = 1

4.  M + N = 3

View Answer  
4
Correct Answer :

M - (2/3)N = 1


Explanation :
No Explanation available for this question

The value of the integral of the function g(x, y) = 4x3 + 10y4 along the straight line segme from the point (0, 0) to the point (1, 2) in the x - y plane is

1.  33

2.  35

3.  40

4.  56

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4
Correct Answer :

33


Explanation :
No Explanation available for this question

If f (z) = If f(z)=C0+C1 Z -1 then  is given by

1.  2πc1

2.  2π(1 + c0)

3.  2πjc1

4.  2πj(1 + c0)

View Answer  
4
Correct Answer :

2π(1 + c0)


Explanation :
No Explanation available for this question

A linear, time-invariant, causal continuous time system has a rational transfer function w simple poles at s = -2 and s = -4, and one simple zero at s = -1. A unit step u(t) is applied the  input of  the system. At steady state,  the output has constant value of 1. The  impul response of this system is

1.  [exp(-2t) + exp(-4t)]u(t)

2.  [-4 exp(-2t) - 12 exp(-4t) - exp(-t)]u(t)

3.  [-4 exp(-2t) + 12 exp(-4t)]u(t)

4.  [-0.5 exp(-2t) + 1.5 exp(-4t)]u(t)

View Answer  
4
Correct Answer :

[exp(-2t) + exp(-4t)]u(t)


Explanation :
No Explanation available for this question

In the interconnection of ideal sources shown in the figure , it is that the 60v source is absorbing power Which of the following can be the value of the current source i

1.  10 A

2.  13A

3.  15A

4.  18A

View Answer  
4
Correct Answer :

10 A


Explanation :
No Explanation available for this question
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