Practice Pakistan's most useful MCQs for competitive exams

Paper capacitors usually have a tolerance of___________?

• (A)  ± 5%
• (B)  ± 10%
• (C)  ± 15%
• (D)  ± 20%

Answer

Submitted By :Ali Uppal

“The surface integral of the normal component of the electric displacement D over any closed surface equals the charge enclosed by the surface”. The above statement is associated with_______?

• (A)  Gauss’s law
• (B)  Kirchhoff s law
• (C)  Faraday’s law
• (D)  Lenz’s law

Answer

Submitted By :Ali Uppal

capacitors can be used only for D.C ?

• (A)  Air
• (B)  Paper
• (C)  Mica
• (D)  Electrolytic

Answer

Submitted By :Ali Uppal

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

Answer

Submitted By :Ali Uppal

The electrostatic force between two charges of one coulomb each and placed at a distance of 0.5 m will be____________?

• (A)  36 x 10fa
• (B)  36 x 107 N
• (C)  36 x 108 N
• (D)  36 x 109 N

Answer

Submitted By :Ali Uppal

Dielectric strength of mica is___________?

• (A)  10 to 20 kV/mm
• (B)  30 to 50 kV/mm
• (C)  50 to 200 kV/mm
• (D)  300 to 500 kV/mm

Answer

Submitted By :Ali Uppal

capacitors are mainly used for radio frequency tuning?

• (A)  Paper
• (B)  Air
• (C)  Mica
• (D)  Electrolytic

Answer

Submitted By :Ali Uppal

When the dielectric is homogeneous,the potential gradient is_____________?

• (A)  uniform
• (B)  non-uniform
• (C)  zero
• (D)  any of the above

Answer

Submitted By :Ali Uppal

capacitors are used in transistor circuits?

• (A)  Ceramic
• (B)  Paper
• (C)  Air
• (D)  Electrolytic

Answer

Submitted By :Ali Uppal

The inverse of capacitance is called_______________?

• (A)  reluctance
• (B)  conductance
• (C)  susceptance
• (D)  elastance

Answer

Submitted By :Ali Uppal