Electrostatics - Interview Questions | Exam2Win

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81. The dielectric constant (relative permittivity) of glass is given by

A. 0.1 to 0.4

B. 0.5 to 1.0

C. 2.0 to 4.0

D. 5 to 100

Explanation:

82. A mica capacitor and a ceramic capacitor both have the same physical dimensions. Which will have more value of capacitance ?

A. Ceramic capacitor

B. Mica capacitor

C. Both will have identical value of capacitance

D. It depends on applied voltage

Explanation:

83. Which of the following material has least value of dielectric constant ?

A. Ceramics

B. Oil

C. Glass

D. Paper

Explanation:

84. Which of the following statements is incorrect ?

A. The thinner the dielectric, the more the capacitance and the lower the voltage breakdown rating for a capacitor .

B. A six dot mica capacitor colour coded white, green, black, red and yellow has the capacitance value of 500 pF

C. Capacitors in series provide less capacitance but a higher voltage breakdown rating for the combina�tion

D. A capacitor can store charge be�cause it has a dielectric between two conductors

Explanation:

85. Which of the following statements is correct ?

A. Air capacitors have a blackband to indicate the outside foil

B. Electrolytic capacitor must be con�nected in the correct polarity

C. Ceramic capacitors must be con�nected in the correct polarity

D. Mica capacitors are available in capacitance value of 1 to 10 pF

Explanation: