Lakshya Education MCQs

Question: Which one of the following statements is true?
Options:
A.Capacitive reactance is at a minimum for dc source voltages
B.Capacitive reactance decreases as the operating frequency increases
C.There is no meaningful relationship between capacitive reactance and operating frequency
D.Capacitive reactance increases as the operating frequency increases
E.None of the above
Answer: Option B

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More Questions on This Topic :

Question 1. The peak value of a sine waveform is:
  1.    the amplitude at 70.7% of the maximum value
  2.    the amplitude at 90% of the maximum value
  3.    the amplitude at 1.41 times the maximum value
  4.    the maximum positive or negative value
  5.    None of the above
Answer: Option D
Question 2. Which one of the following statements is true for voltage in a parallel circuit?
  1.    The total voltage in a parallel circuit is equal to the average value of the individual voltages
  2.    The total voltage in a parallel circuit is always less than the value of the smallest voltage
  3.    The total voltage is equal to the sum of the voltages across the individual branches in a parallel circuit
  4.    The total voltage of a parallel circuit is the same as the voltages across each branch
  5.    None of the above
Answer: Option D
Question 3. The dielectric constant of a material is a measure of:
  1.    the amount of voltage it can withstand before breaking down
  2.    how well the material concentrates electrostatic lines of force
  3.    the amount of opposition to the current flow
  4.    how well the material concentrates magnetic lines of force
  5.    None of the above
Answer: Option B
Question 4. The south pole of a magnet is the one:
  1.    that would be attracted to the earths north magnetic pole
  2.    that has its molecules arranged in a random pattern
  3.    that would be attracted to the earth's south magnetic pole
  4.    that would be repelled by the north pole of another magnet
  5.    None of the above
Answer: Option B
Question 5. At cut off, the Q point is at
  1.    upper end of the load line
  2.    middle of the load line
  3.    lower end of the load line
  4.    infinity
  5.    None of the above
Answer: Option C
Question 6. Absolute Zero temperature equals
  1.    0o C
  2.    -273o C
  3.    -276o C
  4.    25o C
  5.    None of the above
Answer: Option B

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