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MCQs

Total Questions : 330 | Page 1 of 33 pages
Question 1. A 330 pF capacitor and a 220 pF capacitor are each connected across a 6 V dc source. The voltage across the 330 pF capacitor is
  1.    3 V
  2.    6 V
  3.    4 V
  4.    0 V
 Discuss Question
Answer: Option B. -> 6 V
Question 2. What is the capacitance when Q = 60 µC and V = 12 V?
  1.    720 µF
  2.    5 µF
  3.    50 µF
  4.    12 µF
 Discuss Question
Answer: Option B. -> 5 µF
Question 3. Voltage leads current by 90° in a capacitor.
  1.    True
  2.    False
 Discuss Question
Answer: Option B. -> False
Question 4. Five time constants are required for a capacitor to charge fully or discharge fully.
  1.    True
  2.    False
 Discuss Question
Answer: Option A. -> True
Question 5. A capacitor of 2,000 pF is greater than
  1.    0.02 µF
  2.    0.002 µF
  3.    0.0002 µF
  4.    0.0000002 F
 Discuss Question
Answer: Option C. -> 0.0002 µF
Question 6. A capacitor of 0.02 µF is larger than
  1.    0.000020 F
  2.    200,000 pF
  3.    2,000 pF
  4.    All of the above
 Discuss Question
Answer: Option C. -> 2,000 pF
Question 7. The true power in a capacitor is zero.
  1.    True
  2.    False
 Discuss Question
Answer: Option A. -> True
Question 8. A capacitor blocks A.C. but passes D.C.
  1.    True
  2.    False
 Discuss Question
Answer: Option B. -> False
Question 9. Two 0.68 µF capacitors are connected in series across a 10 kHz sine wave signal source. The total capacitive reactance is
  1.    46.8 Ω
  2.    4.68 Ω
  3.    23.41 Ω
  4.    11.70 Ω
 Discuss Question
Answer: Option A. -> 46.8 Ω
Question 10. A 0.47 µF capacitor is across a 2 kHz sine wave signal source. The capacitive reactance is
  1.    170 Ω
  2.    17 Ω
  3.    0.000169 Ω
  4.    1.7 Ω
 Discuss Question
Answer: Option A. -> 170 Ω

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