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MCQs

Total Questions : 117 | Page 2 of 12 pages
Question 11. When C.T. is connected in series with a line, a large voltage exists across the primary.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 12. Winding resistance of a P.T. can be reduced by _________
  1.    using thick conductors
  2.    decreasing the length of the winding
  3.    shorting the primary and secondary windings
  4.    using thin conductors
 Discuss Question
Answer: Option A. -> using thick conductors
Answer: (a).using thick conductors
Question 13. Ratio error in a P.T. depends on _________
  1.    secondary current
  2.    primary voltage
  3.    secondary current
  4.    turns ratio
 Discuss Question
Answer: Option C. -> secondary current
Answer: (c).secondary current
Question 14. Leakage reactance is minimised by _________
  1.    using thin conductors
  2.    reducing leakage flux
  3.    increasing flux density
  4.    shorting the windings
 Discuss Question
Answer: Option B. -> reducing leakage flux
Answer: (b).reducing leakage flux
Question 15. High flux density is due to less turns.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 16. In a P.T. values of components of currents are negligible.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 17. Another method of eliminating the ratio error is _________
  1.    by reducing secondary turns
  2.    by increasing the primary turns
  3.    by increasing secondary turns
  4.    by reducing the primary turns
 Discuss Question
Answer: Option A. -> by reducing secondary turns
Answer: (a).by reducing secondary turns
Question 18. Increasing secondary burden _____________
  1.    increases Iₛ
  2.    decreases Iₛ
  3.    keeps Iₛ constant
  4.    decreases Iₚ
 Discuss Question
Answer: Option A. -> increases Iₛ
Answer: (a).increases Iₛ
Question 19. How is the voltage ratio dependent on the frequency?
  1.    they are independent of each other
  2.    they aid each other
  3.    they oppose each other
  4.    depends on the setup of the circuit
 Discuss Question
Answer: Option C. -> they oppose each other
Answer: (c).they oppose each other
Question 20. Ratio error can be minimised by _________
  1.    reducing the turns
  2.    reducing the current
  3.    increasing the voltage
  4.    using a good core material
 Discuss Question
Answer: Option D. -> using a good core material
Answer: (d).using a good core material

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