Materials and Components
The apparent capacitance at a high angular frequency ω of an air cored capacitor having capacitance C and inductance L is given by
Answer: B
The combination can be represented as L and C in series.
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Therefore, 
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Rochelle salt is a ferroelectric material.
Answer: A
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Silicon and germanium atoms combine orderly into array of atoms located in repetitive geometric pattern. This pattern is called
Answer: A
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As the temperature of a pure silicon specimen is increased
Answer: D
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A 200 turn coil has a self inductance of 10 mH. If the number of turns is doubled, all other quantities remaining the same, the self inductance will be
Answer: D
Inductance is proportional to square of number of turns.
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Even at room temperature, an intrinsic semiconductor has some holes. These holes are due to
Answer: C
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In body centred cubic structure, comers and centre of the cube are occupied by identical atoms.
Answer: A
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If v is the velocity of electron, tc is the average time between collisions, the mean free path λ = vtc.
Answer: A
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Above ferroelectric curie temperature, spontaneous polarization in ferroelectric materials becomes stronger.
Answer: B
Spontaneous polarization vanishes above ferro-electric Curie temperature.
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An iron specimen has µr = 1000 when B = 0.3 T. If B = 0.35 T, µr
Answer: D
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