RRB JE electrical practice paper | RRB JE Electrical

RRB Previous Year Paper / March 15, 2022

Ques.31. Distance relays are generally

  1. MHO relays
  2. Reactance Relays
  3. Impedance Relays
  4. Split Phase relays

Answer.1. MHO relays

 

Ques.32. Which of the following relays are used for the phase fault on long line?

  1. Impedance relay
  2. MHO relay
  3. Split phase relay
  4. Reactance relay

Answer.4. Reactance relay

 

Ques.33. Which of the following frequency range is suitable for A.C network analysis?

  1. 40 Hz to 500 Hz
  2. 50 Hz to 100 Hz
  3. 40 Hz to 50 Hz
  4. 60 Hz to 80 Hz

Answer.1. 40 Hz to 500 Hz

 

Ques.34. The material for commutator brushes is generally

  1. Mica
  2. Carbon
  3. Casr Iron
  4. Copper

Answer.2. Carbon

 

Ques.35. The typical value of SCR for modern alternator is

  1. 1.5
  2. 0.5
  3. 1.0
  4. 1.2

Answer.2. 0.5

 

Ques.36. The lightning arrester acts as

  1. Surge Diverter
  2. Surge coil
  3. Surge absorber
  4. Surge Reflector

Answer.1. Surge Diverter

 

Ques.37. Corona loss in the power line is more in winter season than in the summer season

  1. True
  2. False
  3. None of these
  4. Can not say

Answer.1. True

 

Ques.38. The electrical resistance is analogous to

  1. Spring
  2. Viscous Damper
  3. Fluid Capacity
  4. Inertia

Answer.1. Spring

 

Ques.39. The electrical capacitance is analogous to

  1. Spring
  2. Fluid Resistance
  3. Inertia viscous damper
  4. None of these

Answer.2. Fluid resistance

 

Ques.40. “Microsyn” is the name given to the

  1. Potentiometer
  2. Resolver
  3. Rotary differential transformer
  4. Magnetic amplifier

Answer.3. Rotary differential transformer

Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Related Posts

Scroll to Top