Lakshya Education MCQs

Question: Pure inductive circuit
Options:
A. Consumes some power on average
B. Does not take power at all from a line
C. Takes power from the line during some part of the cycle and then returns back to it during other part of the cycle
D. None of the above
Answer: Option C

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More Questions on This Topic :

Question 1. An a.c. voltage is impressed across a pure resistance of 3.5 ohms in parallel with a pure inductance of impedance of 3.5 ohms,
  1.     The current through the resistance is more
  2.     The current through the resistance is less
  3.     Both resistance and inductance carry equal currents
  4.     None of the above
Answer: Option C
Question 2. The frequency of domestic power supply in india is
  1.     200 Hz
  2.     100 Hz
  3.     60 Hz
  4.     50 Hz
Answer: Option D
Question 3. Pure inductive circuit
  1.     Consumes some power on average
  2.     Does not take power at all from a line
  3.     Takes power from the line during some part of the cycle and then returns back to it during other part of the cycle
  4.     None of the above
Answer: Option C
Question 4. Poor power factor
  1.     Reduces load handling capability of electrical system
  2.     Results in more power losses in the electrical system
  3.     Overloads alternators, transformers and distribution lines
  4.     Results in all above
Answer: Option D
Question 5. Form factor for a sine wave is
  1.     1.414
  2.     0.707
  3.     1.11
  4.     0.637
Answer: Option C
Question 6. When an alternating current passes through an ohmic resistance the electrical power converted into heat is
  1.     Apparent power
  2.     True power
  3.     Reactive power
  4.     None of the above
Answer: Option B

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