Objective Type Questions on Electrical Electrostatics - Set 05 - ObjectiveBooks

Objective Type Questions on Electrical Electrostatics - Set 05

Practice Test: Question Set - 05

1. Which capacitor will be physically smaller for the same ratings?
    (A) Ceramic capacitor
    (B) Paper capacitor
    (C) Both will be of equal size
    (D) None of the above

2. For closer tolerances which of the following capacitors is usually preferred?
    (A) Paper capacitor
    (B) Mica capacitor
    (C) Ceramic disc capacitor
    (D) None of the above

3. The inverse of capacitance is called
    (A) Reluctance
    (B) Conductance
    (C) Susceptance
    (D) Elastance

4. The number of Faraday tubes of flux passing through a surface in an electric field is called
    (A) Electric flux
    (B) Electric flux density
    (C) Magnetic flux density
    (D) Electric charge density

5. Permittivity is expressed in
    (A) Farad/sqm
    (B) Farad/meter
    (C) Weber/meter
    (D) Weber/sqm

6. A potential of 400 V is applied to a capacitor, the plates of which are 4 mm apart. The strength of electric field is
    (A) 100 kV/m
    (B) 10 kV/m
    (C) 5 kV/m
    (D) 2 kV/m

7. Dielectric strength of a medium is usually expressed in
    (A) J/mm
    (B) C/m2
    (C) kV/mm
    (D) N/mm

8. Voltage applied across a ceramic dielectric produces an electrolytic field 100 times greater than air. What will be the value of dielectric constant?
    (A) 50
    (B) 100
    (C) 150
    (D) 200

9. The direction of electric field due +0 positive charge is:
    (A) Away from the charge
    (B) Towards the charge
    (C) Both (A) and (B)
    (D) None of the above

10. The capacitance of a capacitor is not affected by
    (A) Distance between plates
    (B) Area of plates
    (C) Thickness of plates
    (D) All of the above

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