SSC JE Electrical Engineering Previous Year Question Papers - 1

Question: 1

Commonly used dielectric in electrolytic capacitors is

(A) Aluminium oxide

(B) Manganese oxide

(C) Cadmium oxide

(D) Magnesium oxide

Question: 2

Ferrites are the materials which have _____

(A) High permeability and high dielectric loss

(B) High permeability and low dielectric loss

(C) Low permeability and high dielectric loss

(D) Low permeability and low dielectric loss

Question: 3

For a permanent magnetic material

(A) The initial relative permeability should be large

(B) The area of hysteresis loop should be small

(C) The residual induction and the coercive field should be small

(D) The residual induction and the coercive field should be large

Question: 4

Which of the following is piezoelectric material?

(A) Polystyrene

(B) Corundum

(C) Quartz

(D) Silica sand

Question: 5

The resistivity of a metal of a function of temperature because

(A) Collision of electrons increases as temperature increases

(B) The electron density varies with temperature

(C) The electron gas density varies with temperature

(D) The lattices vibration increases with temperature.