Transformers Questions and Answers

Practice Mode
Showing 10 of 18 questions
Q11
The reflected load value that the source sees will always be larger than the load value itself.
  • A TRUE
  • B FALSE
Answer: Option A
Q12
An open secondary winding of a transformer will cause the primary current to be nearly zero.
  • A TRUE
  • B FALSE
Answer: Option A
Q13
The secondary voltages produced by a center-tapped transformer are equal in amplitude but 180° out of phase with respect to the center tap.
  • A TRUE
  • B FALSE
Answer: Option A
Q14
A transformer that has 700 turns in the primary and 35 turns in the secondary has a turns ratio of 20:1.
  • A TRUE
  • B FALSE
Answer: Option A
Q15
Regardless of whether the transformer is step-up or step-down, power in the primary equals the power in the secondary if there is 100% efficiency.
  • A TRUE
  • B FALSE
Answer: Option A
Q16
For mutual inductance to occur, the two coils must be at right angles to each other.
  • A TRUE
  • B FALSE
Answer: Option B
Q17
If the current drawn in the secondary of a transformer increases, the power in the primary should remain the same.
  • A TRUE
  • B FALSE
Answer: Option B
Q18
If an analog signal is to be converted to an 8-bit resolution, how many comparators are used in a parallel-encoded ADC?
  • A 127
  • B 128
  • C 255
  • D 256
Answer: Option D

📚 More from Electronics

← All Topics 🎯 Practice ⏱️ Take Test 🔍 Search
Electronics
Back to Electronics
Other Subjects
Questions and Answers for Competitive Exams Various Entrance Test