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Materials and Components

Materials and Components
A leakage capacitor can be represented by a capacitance C and resistance R in parallel C.

True
False

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Materials and Components
The merger of hole and free electron is called

Free electrons
Covalent bonding
Thermal energy
Recombination

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Materials and Components
When a dielectric material is subjected to alternating field, the absorption of energy by the material from the field is given by the imaginary part of polarizability.

True
False

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Materials and Components
The resistance of a photoconductor

Remains constant
Decreases with increase in light intensity
Increases with increase in light intensity
May increase or decrease with increase in light intensity

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Materials and Components
Which inductor is used at high frequencies?

Cast iron cored
Iron alloy cored
Sheet steel cored
Ceramic cored

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Materials and Components
The number of protons in a copper atom are

2
9
11
29

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