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MCQs

Total Questions : 441 | Page 9 of 45 pages
Question 81. If an ohmmeter reading immediately goes practically to zero and stays there, capacitor is
  1.    Charged
  2.    Short-circuited
  3.    Lossy
  4.    Satisfactory
 Discuss Question
Answer: Option B. -> Short-circuited
Question 82. The ability of charged bodies to exert force on 6ne another is attributed to the existence of
  1.    electrons
  2.    protons
  3.    neutrons
  4.    electric field
 Discuss Question
Answer: Option D. -> electric field
Question 83. For closer tolerances which of the following capacitors is usually preferred ?
  1.    Paper capacitor
  2.    Mica capacitor
  3.    Ceramic disc capacitor
  4.    None of the above
 Discuss Question
Answer: Option B. -> Mica capacitor
Question 84. One volt is the same as
  1.    one joule/coulomb
  2.    one coulomb/joule
  3.    one coulomb
  4.    one joule
 Discuss Question
Answer: Option A. -> one joule/coulomb
Question 85. _______ field is associated with the capacitor.
  1.    Electric
  2.    Magnetic
  3.    Both (A) and (B)
  4.    None of the above
 Discuss Question
Answer: Option A. -> Electric
Question 86. A charge which when placed in vacuum from an equal and similar charge repels with a force of 9 x 103 N, is known as
  1.    milli-coulomb
  2.    micro-coulomb
  3.    pico-coulomb
  4.    coulomb
 Discuss Question
Answer: Option B. -> micro-coulomb
Question 87. A capacitor stores 0.24 coulombs at 10 volts. Its capacitance is
  1.    0.024 F
  2.    0.12 F
  3.    0.6 F
  4.    0.8 F
 Discuss Question
Answer: Option A. -> 0.024 F
Question 88. In a capacitive circuit
  1.    a steady value of applied voltage causes discharge
  2.    an increase in applied voltage makes a capacitor charge
  3.    decrease in applied voltage makes a capacitor charge
  4.    none of the above
 Discuss Question
Answer: Option B. -> an increase in applied voltage makes a capacitor charge
Question 89. Two infinite parallel plates 10 mm apart have maintained between them a potential difference of 100 V. The acceleration of an electron placed between them is
  1.    0.56 x 1015 m/s2
  2.    1.5 x 1015 m/s2
  3.    1.6 x 1015 m/s2
  4.    1.76 x 1015 m/s2
 Discuss Question
Answer: Option D. -> 1.76 x 1015 m/s2
Question 90. What is the value of capacitance that must be connected in parallel with 50 pF condenser to make an equivalent capacitance of 150 pF ?
  1.    50 pF
  2.    100 pF
  3.    150 pF
  4.    200 pF
 Discuss Question
Answer: Option B. -> 100 pF

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