TRB exam online practice test for Electrical and Electronics Engineering dept provides you with ample practice material for TRB exam preparation for cse department which adheres to the real exam format. Each TRB - EEE exam practice test has 10 questions. After completing click on to the COMPLETE TEST to know the score and the correct answers.


Electrical and Electronics Engineering - TRB Online Practice Test - 6

  • Online Practice Test - EEE
   

1.
  The signal $$x\left( n \right){\rm{ }} = {\rm{ }}cos{{2\pi } \over 3}\;n.u(n)$$ is:.
  • A.   Causal , aperiodic
  •  
  • B.   Causal, periodic
  •  
  • C.   Non – causal, periodic
  •  
  • D.   Non – causal, aperiodic
  Options: A    B    C    D   
   
 
   

2.
  Z – Transform of x(n) = nu (n) is :.
  • A.   $${z \over {{{(z - 1)}^2}}}$$
  •  
  • B.   $${z \over {{{(z - 1)}^3}}}$$
  •  
  • C.   $${{{z^2}} \over {{{(z - 1)}^3}}}$$
  •  
  • D.   $${z \over {(z - 1)}}$$
  Options: A    B    C    D   
   
   

3.
  The Fourier transform of a real valued time signal has :.
  • A.   odd symmetry
  •  
  • B.   even symmetry
  •  
  • C.   conjugate symmetry
  •  
  • D.   no symmetry
  Options: A    B    C    D   
   
 
   

4.
  Consider a Causal LTI system with $$h(j\omega ) = {1 \over {(j\omega + 3)}}$$ and output $$y(t) = {e^{ - 3t}}.u(t) - {e^{ - 4t}}.u(t)$$. Determine x(t).
  • A.   $${e^{ - 3t.u(t)}}$$
  •  
  • B.   $${e^{ - 4t.u(t)}}$$
  •  
  • C.   $${e^{4t.u(t)}}$$
  •  
  • D.   $${e^{ - 7t.u(t)}}$$
  Options: A    B    C    D   
   
   

5.
  The Fourier series coefficients of $$x(t) = \sin {w_o}t$$ are.
  • A.   $${a_1} = {{ - 1} \over {2j}},{a_{ - 1}} = {{ 1} \over {2j}},{a_k} = 0,k = 1\,or\, - 1$$
  •  
  • B.   $${a_1} = {{ - 1} \over {2j}},{a_{ - 1}} = {{ - 1} \over {2j}},{a_k} = 0,k \ne 1\,or\, - 1$$
  •  
  • C.   $${a_1} = {{ - 1} \over 2},{a_{ - 1}} = {1 \over {2j}},{a_k} = 1,k \ne 1\,or\, - 1$$
  •  
  • D.   $${a_1} = {a_{ - 1}} = {1 \over {2j}},{a_k} = 1,k \ne 1\,or\, - 1$$
  Options: A    B    C    D   
   
 
   

6.
  The value of K, for which the system becomes marginally stable:.
  • A.   18
  •  
  • B.   36
  •  
  • C.   1386
  •  
  • D.   1200
  Options: A    B    C    D   
   
   

7.
  The minimum number of states necessary to describe the network shown in figure in a state variable form is :.
  • A.   2
  •  
  • B.   3
  •  
  • C.   6
  •  
  • D.   4
  Options: A    B    C    D   
   
 
   

8.
  Using the frequency shift property, find Z(n) corresponding to : \[Z(e^{j\Omega }) = \frac{1}{1-\alpha e^{-j}(\Omega \frac{\pi }{4})};\left | \alpha \right |<1\] .
  • A.   \[e^{\frac{-j\pi }{4n}}\alpha ^{n}.u(n)\]
  •  
  • B.   \[e^{\frac{-\pi }{4n}}\alpha ^{n}.u(n)\]
  •  
  • C.   \[e^{\frac{-j }{4}}\alpha ^{n}.u(n)\]
  •  
  • D.   \[e^{\frac{-\pi}{4n}}\alpha ^{n}.u(n)\]
  Options: A    B    C    D   
   
   

9.
  The maximum phase shift that can be provided by a lead compensator with transfer function \[G(s)=\frac{1+6s}{1+2s} is :\].
  • A.   \[15^{0}\]
  •  
  • B.   \[30^{0}\]
  •  
  • C.   \[45^{0}\]
  •  
  • D.   \[60^{0}\]
  Options: A    B    C    D   
   
 
   

10.
  In transformer, to carry out short circuit test _____________ winding is preferred to be short circuited.
  • A.   HV side
  •  
  • B.   LV side
  •  
  • C.   Primary side
  •  
  • D.   Secondary side
  Options: A    B    C    D   
   

Complete Test
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