RRB JE electrical practice paper-2 | RRB JE Electrical

RRB Previous Year Paper / March 15, 2022

Ques.61. Which circuit is represented by the frequency response curve in the following figure?

fig.3

  1. High pass filter
  2. Low pass filter
  3. Band pass filter
  4. Band stop filter

Answer.2. Low pass filter

 

Ques.62. Which of the following motors is most suitable for signaling devices and many kinds of timers?

  1. DC series motor
  2. AC series motor
  3. Induction motor
  4. Reluctance motor

Answer.4. Reluctance motor

 

Ques.63. System function H(s) = 1/(s + 3), for signal sin 2t, the steady state response is

  1. ∞
  2. 0
  3. 8
  4. 1/8

Answer.2. 0

 

Ques.64. The efficiency of heating is more for

  1. Solid Fuels
  2. Oil Heating
  3. Gas Heating
  4. Electric heating

Answer.4. Electric heating

 

Ques.65. For the circuit in the following figure,  fed by a unit step voltage VC is

fig.4

  1. 1 − e−t/RC
  2. e−t/RC
  3. et/RC
  4. 1

Answer.1. 1 − e−t/RC

 

Ques.66. Which of the following type of class allows only one object of it to be created?

  1. Virtual class
  2. Abstract class
  3. Singleton class
  4. Friend class

Answer.3. Singleton class

 

Ques.67. Which of the following concept means determining at runtime what method to invoke?

  1. Data hiding
  2. Dynamic typing
  3. Dynamic binding
  4. Dynamic loading

Answer.2. Dynamic binding

 

Ques.68. Which of the following provides a reuse mechanism?

  1. Abstraction
  2. Inheritance
  3. Dynamic binding
  4. Encapsulation

Answer.2. Inheritance

 

Ques.69. In a series-parallel circuit consisting of R1 and R2 in series and connected in parallel with R3, if R1 opens then R2 voltage will

  1. Increases
  2. Decreases
  3. Remain the same
  4. None of the above

Answer.2. Decreases

 

Ques.70. How much current is flowing through R1 in the given below circuit?

fig.5

  1. 0.3 A
  2. 0.5 A
  3. 0.7 A
  4. 0.9 A

Answer.2. 0.5 A

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