Exam preparation MCQs with answers

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Paper condenser is___________?
  • (A)  always polarised
  • (B)  usually of fixed value
  • (C)  electrolytic condenser
  • (D)  a variable condenser
Which of the following statements is correct ?
  • (A)  Mica capacitors are available in capacitance values of 5 to 20 uF
  • (B)  Air capapitors have a black band to indicate the outside foil
  • (C)  Electrolytic capacitors must be connected in correct polarity
  • (D)  Ceramic capacitors must be connected in correct polarity
A condenser suitable for D.C. only is________?
  • (A)  metallic plate variable gang condenser
  • (B)  metallic paper capacitor
  • (C)  oil impregrated paper condenser
  • (D)  poled aluminium electrolytic condenser