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MCQs

Total Questions : 330 | Page 27 of 33 pages
Question 261.  A capacitor's rate of charge is considered:
  1.    magnetic
  2.    a current block
  3.    linear
  4.    exponential
 Discuss Question
Answer: Option D. -> exponential
Question 262. . With a 500 kHz signal source, what would be the value of a capacitor yielding a capacitive reactance of 1 k omega.gif?
  1.    318 pF
  2.    2 nF
  3.    3.18 F
  4.    2 F
 Discuss Question
Answer: Option A. -> 318 pF
Question 263. . If an open capacitor is checked with an ohmmeter, the needle will:
  1.    stay on zero
  2.    stay on infinity
  3.    move from zero to infinity
  4.    move from infinity to zero
 Discuss Question
Answer: Option B. -> stay on infinity
Question 264.  A resistor and an output capacitor form a series circuit with a square wave applied. The circuit is:
  1.    an integrator
  2.    a differentiator
  3.    a multiplier
  4.    a divider
 Discuss Question
Answer: Option A. -> an integrator
Question 265. . A capacitor stores energy within a dielectric between the conducting plates in the form of:
  1.    a magnetic field
  2.    positive voltage
  3.    negative voltage
  4.    an electric field
 Discuss Question
Answer: Option D. -> an electric field
Question 266. . As a capacitor is being charged, current flowing into the capacitor will:
  1.    increase
  2.    decrease
  3.    remain the same
  4.    cannot tell
 Discuss Question
Answer: Option B. -> decrease
Question 267. . As a capacitor is being charged, the voltage across its terminals will:
  1.    increase
  2.    decrease
  3.    remain the same
  4.    oppose the source
 Discuss Question
Answer: Option A. -> increase
Question 268. . After a capacitor has charged for 1 tc, what percentage of current remains in the resistor?
  1.    63.2
  2.    36.8
  3.    13.5
  4.    5.0
 Discuss Question
Answer: Option B. -> 36.8
Question 269. . A capacitor is constructed of two parallel:
  1.    conductors
  2.    semiconductors
  3.    inductors
  4.    dielectrics
 Discuss Question
Answer: Option A. -> conductors
Question 270. . In an ac circuit, an output capacitor and a resistor are connected in series with an ac signal. What filter action will be the result?
  1.    bandpass
  2.    low-pass
  3.    high-pass
  4.    band-stop
 Discuss Question
Answer: Option B. -> low-pass

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