RRB Previous Year Physics Questions

One watt is equal to-

  • 1 Nm/s
  • 1 N/mt
  • 1 Nm/t
  • 1 k Nm/mt

Work done is zero for the following process-

  • Constant Volume
  • Free Expansion
  • Throttling
  • All of the above

One calorie in kgm is equal to-

  • 0.427
  • 4.27
  • 42.7
  • 427

In DC motor the direction of induced emf is opposite to main bars as per-

  • Fleming’s left-hand rule
  • Lenz’s law
  • Fleming’s right-hand rule
  • Faraday’s’ law

Which type of DC generator is used in welding machines-

  • Series generator
  • Shunt generator
  • Cumulatively compound
  • Differential compound

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