electronic

1. What is the result of Ionization in PN Junction on either side of the potential barrier?

• Barrier Voltage
• Junction
• Depletion Region
• Forward Voltage

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2. Which of the following is a Semiconductor?

• Argon
• Carbon
• Mica
• Ceramic

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3. Doping material among the following is

• N-type Semiconductor
• Majority Carriers
• Extrinsic Semiconductor Material
• Pentavalent Material

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4. The most commonly used semiconductor element is

• Silicon
• Germanium
• Gallium
• Carbon

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5. The number of protons in the nucleus of a silicon atom is

• 4
• 14
• 29
• 32

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6. The valence electron of a conductor is also called as

• Bound electron
• Nucleus
• Free electron
• Proton

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7. Copper is a

• Insulator
• Semiconductor
• Conductor
• Super Conductor

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8. An intrinsic semiconductor at room temperature has

• A few free electrons and holes
• Many holes
• Many free electrons
• No holes

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9. The voltage out of an ideal voltage source is

• Zero
• Constant
• Load resistance dependent
• Internal resistance dependent

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10. The path between two points along which an electrical current can be carried is called

• A network
• A relay
• A circuit
• A loop

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11. The unit of electrical resistance is

• Volt
• Ohm
• Amp
• Coulomb

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12. In a constant voltage DC circuit, when the resistance increases, the current will

• Decrease
• Increase
• Stop
• Remains constant

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13. At room temperature, an intrinsic semiconductor has some holes in it due to

• Doping
• Free electrons
• Thermal energy
• Valence electrons

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14. Holes act as

• Atoms
• Crystals
• Negative charges
• Positive charges

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15. The number of holes in an intrinsic semiconductor is

• Equal to number of free electrons
• Greater than the number of free electrons
• Less than the number of free electrons
• None of the above

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