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MCQs

Total Questions : 117 | Page 1 of 12 pages
Question 1. Coils of a C.T. are separately wound.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 2. The windings of a C.T. are ________
  1.    tied together
  2.    shorted
  3.    wound over one another
  4.    grounded
 Discuss Question
Answer: Option C. -> wound over one another
Answer: (c).wound over one another
Question 3. At high voltages, the current transformers are enclosed in a tank.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 4. Turns compensation is used to obtain ________
  1.    to compensate the turns
  2.    to equalise the turns on the windings
  3.    to protect the equipment
  4.    transformation ratio equal to nominal ratio
 Discuss Question
Answer: Option D. -> transformation ratio equal to nominal ratio
Answer: (d).transformation ratio equal to nominal ratio
Question 5. What is the effect of reducing the secondary turns in a C.T. by 1%?
  1.    transformation ratio reduces by the same value
  2.    no effect
  3.    nominal ratio increase by the same value
  4.    secondary current increases by the same value
 Discuss Question
Answer: Option A. -> transformation ratio reduces by the same value
Answer: (a).transformation ratio reduces by the same value
Question 6. The secondary winding of a C.T. ____________
  1.    can be shorted
  2.    can’t be shorted
  3.    can be opened
  4.    can’t be opened
 Discuss Question
Answer: Option A. -> can be shorted
Answer: (a).can be shorted
Question 7. The secondary winding of a C.T. is opened when?
  1.    C.T. is magnetised
  2.    C.T. is demagnetised
  3.    C.T. is shorted
  4.    C.T. is opened
 Discuss Question
Answer: Option B. -> C.T. is demagnetised
Answer: (b).C.T. is demagnetised
Question 8. Potential transformers are used to measure _________
  1.    high voltages
  2.    low voltages
  3.    high currents
  4.    low currents
 Discuss Question
Answer: Option A. -> high voltages
Answer: (a).high voltages
Question 9. Potential transformers are used with _________
  1.    high range voltmeter
  2.    low range voltmeter
  3.    intermediate range voltmeter
  4.    very high range voltmeter
 Discuss Question
Answer: Option B. -> low range voltmeter
Answer: (b).low range voltmeter
Question 10. The rectangular type of C.T. is built of _________
  1.    L shaped windings
  2.    T shaped windings
  3.    A shaped windings
  4.    Z shaped windings
 Discuss Question
Answer: Option A. -> L shaped windings
Answer: (a).L shaped windings

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