RRB JE electrical practice paper-2 | RRB JE Electrical

RRB Previous Year Paper / March 15, 2022

Ques.51. Which component of the collector current IC is called the leakage current?

  1. Majority
  2. Independent
  3. Minority
  4. None of these

Answer.3. Minority

 

Ques.52. A good control system has all the following features except

  1. Good stability
  2. Slow response
  3. Good accuracy
  4. Sufficient power handling capacity

Answer.2. Slow response

 

Ques.53. As a result of the introduction of negative feedback which of the following will not decrease

  1. Bandwidth
  2. Overall gain
  3. Distortion
  4. Instability

Answer.1. Bandwidth

 

Ques.54. By which of the following the control action is determined when a man walk along a path

  1. Brain
  2. Hands
  3. Eyes
  4. Legs

Answer.3. Eyes

 

Ques.55. A voltage will influence current only, if the circuit is

  1. Open
  2. Insulated
  3. High resistance
  4. Closed

Answer.4. Closed

 

Ques.56. If an electrical system is compared to a fluid system the electrical current corresponds to the

  1. Pump
  2. Water flow
  3. Pressure
  4. Water wheel

Answer.2. Water flow

 

Ques.57. Which resistive component is designed to be temperature sensitive?

  1. Thermistor
  2. Rheostat
  3. Potentiometer
  4. Photo conductive cell

Answer.1. Thermistor

 

Ques.58. What is the total current in the following circuit?

fig.2

  1. 0.28 A
  2. 0.58 A
  3. 1.08 A
  4. 1.32 A

Answer.1. 0.28 A

 

Ques.59. Semiconductor behaves as ______ at 0 K.

  1. Semiconductor
  2. Superconductor
  3. Conductor
  4. Non-conductor or insulator

Answer.4. Non-conductor or insulator

 

Ques.60. In an electrial machines, copper losses occur

  1. In rotor and starter winding
  2. In commutator
  3. Due to high speed
  4. Due to flux distortion

Answer.1. In rotor and starter winding

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