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 - 5

  • Online Practice Test - EEE
   

1.

  The essential condition for parallel operation of two single phase transformers is that they should have the same:.
  • A.   Polarity
  •  
  • B.   KVA rating
  •  
  • C.   Voltage ratio
  •  
  • D.   Percentage impedance
  Options: A    B    C    D   
   
 
   

2.

  Three – phase alternators are invariably star connected because:.
  • A.   Magnetic losses are minimised
  •  
  • B.   less turns of wire are required
  •  
  • C.   smaller conductors can be used
  •  
  • D.   higher terminal voltage is obtained
  Options: A    B    C    D   
   
   

3.

  In a synchronous motor, damper winding is provided in order to :.
  • A.   Stabilize rotor
  •  
  • B.   Suppress rotor oscillations
  •  
  • C.   Develop necessary starting torque
  •  
  • D.   both (B) and (C)
  Options: A    B    C    D   
   
 
   

4.

  The value of C in the mean value theorem of $$\;f\left( b \right)-f\left( a \right){\rm{ }} = {\rm{ }}\left( {b{\rm{ }} - {\rm{ }}a} \right)f\left( c \right){\rm{ }}for\,f\left( x \right) = {\rm{ }}{a_1}{x^2} + {\rm{ }}{a_2}x{\rm{ }} + {a_3}\,in{\rm{ }}\left( {a,b} \right){\rm{ }}is{\rm{ }}:$$.
  • A.   b+a
  •  
  • B.   b – a
  •  
  • C.   2
  •  
  • D.   4
  Options: A    B    C    D   
   
   

5.

  $$\;If{\rm{ }}w = cos\left( {3u{\rm{ }} + {\rm{ }}4v} \right){\rm{ }}where{\rm{ }}u{\rm{ }} = {\rm{ }}2t{\rm{ }} + {\pi \over 2},\;v{\rm{ }} = {\rm{ }} - {\rm{ }}t{\rm{ }} - \;{\pi \over 4}then\;at{\rm{ }}t{\rm{ }} = \;\,\pi \,is{\rm{ }}equal{\rm{ }} to\;:$$.
  • A.   – 1
  •  
  • B.   - 2
  •  
  • C.   2
  •  
  • D.   4
  Options: A    B    C    D   
   
 
   

6.

  An ammeter gives full scale deflection for a current of 10 mA. Its resistance is \[5\Omega\]. Find the value of the shunt resistance required to measure upto 25A..
  • A.   \[5\Omega\]
  •  
  • B.   \[1\Omega\]
  •  
  • C.   \[0.002\Omega\]
  •  
  • D.   \[0.02\Omega\]
  Options: A    B    C    D   
   
   

7.

  The D.C. gain of the system whose transfer function is given by \[\frac{20}{(S+2)(S+5)} is:\].
  • A.   20
  •  
  • B.   2
  •  
  • C.   4
  •  
  • D.   10
  Options: A    B    C    D   
   
 
   

8.

  If n be the number of nodes and b be the number of branches in a graph then rank of the incidence matrix is :.
  • A.   n
  •  
  • B.   n-1
  •  
  • C.   b-(n+1)
  •  
  • D.   b-1
  Options: A    B    C    D   
   
   

9.

  The Merz – Perice percentage differential protection of a \[\Delta -Y\] transformer, the C.T. secondary connections in the primary and secondary windings of the transformer would be in the form of :.
  • A.   \[\Delta -Y\]
  •  
  • B.   \[\Delta -\Delta\]
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  • C.   \[Y - \Delta\]
  •  
  • D.   \[Y - Y\]
  Options: A    B    C    D   
   
 
   

10.

  \[\left | Vs \right | = \left | V _{R} \right | = 66kV\] for three phase transmission line and reactance is 11 ohms/phase, then the maximum power transmission per phase would be :.
  • A.   132 MW
  •  
  • B.   396 MW
  •  
  • C.   66 MW
  •  
  • D.   36 MW
  Options: A    B    C    D   
   

Complete Test