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MCQs

Total Questions : 330 | Page 5 of 33 pages
Question 41. Air has a dielectric constant of ___________
  1.    Unity
  2.    Zero
  3.    Infinity
  4.    Hundred
 Discuss Question
Answer: Option A. -> Unity
Answer: (a).Unity
Question 42. Which among the following equations is incorrect?
  1.    Q=CV
  2.    Q=C/V
  3.    V=Q/C
  4.    C=Q/V
 Discuss Question
Answer: Option B. -> Q=C/V
Answer: (b).Q=C/V
Question 43. When capacitors are connected in series _______________ Varies.
  1.    Voltage across each capacitor
  2.    Charge
  3.    Capacitance
  4.    Resistance
 Discuss Question
Answer: Option A. -> Voltage across each capacitor
Answer: (a).Voltage across each capacitor
Question 44. Four 10F capacitors are connected in series, calculate the equivalent capacitance.
  1.    1.5F
  2.    2.5F
  3.    3.5F
  4.    0.5F
 Discuss Question
Answer: Option B. -> 2.5F
Answer: (b).2.5F
Question 45. The total voltage drop across a series of capacitors is __________
  1.    The voltage drop across any one of the capacitors
  2.    The sum of the voltage drop across each of the capacitors
  3.    The product of the voltage drop across each of the capacitors
  4.    Zero
 Discuss Question
Answer: Option B. -> The sum of the voltage drop across each of the capacitors
Answer: (b).The sum of the voltage drop across each of the capacitors
Question 46. When capacitors are connected in series, which of the following rules are applied?
  1.    Voltage divider
  2.    Current divider
  3.    Both voltage divider and current divider
  4.    Neither voltage divider nor current divider
 Discuss Question
Answer: Option A. -> Voltage divider
Answer: (a).Voltage divider
Question 47. Capacitors C1, C2 and C3 have voltage drops 2V, 3V and 5V respectively. Calculate the total voltage in the circuit.
  1.    10V
  2.    2V
  3.    5V
  4.    0V
 Discuss Question
Answer: Option A. -> 10V
Answer: (a).10V
Question 48. Capacitor stores which type of energy?
  1.    kinetic energy
  2.    vibrational energy
  3.    potential energy
  4.    heat energy
 Discuss Question
Answer: Option C. -> potential energy
Answer: (c).potential energy
Question 49. If a parallel plate capacitor of plate area 2m² and plate separation 1m store the charge of 1.77*10¯¹¹ C. What is the voltage across the capacitor?
  1.    1V
  2.    2V
  3.    3V
  4.    4V
 Discuss Question
Answer: Option A. -> 1V
Answer: (a).1V
Question 50. Which of the following is a passive device?
  1.    Transistor
  2.    Rectifier
  3.    Capacitor
  4.    Vaccuum Tubes
 Discuss Question
Answer: Option C. -> Capacitor
Answer: (c).Capacitor

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