Solid State Devices

61. Approximate mass at rest of a proton is _________ to that of a neutron.

1. Greater than
2. Equal
3. Less than
4. Comparable

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62. Approximately, the atomic weight of germanium is

1. 32
2. 28.09
3. 72.7
4. 16

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63. As a general rule, _________ are found only in semiconductors.

1. Electrons
2. Bulk resistances
3. Depletion layers
4. Holes

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64. At absolute zero temperature, a semiconductor behaves as a/an

1. Good conductor
2. Superconductor
3. Insulator
4. Variable resistor

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65. At room temperature, a silicon crystal acts approximately like a/an

1. Insulator
2. Semiconductor
3. Conductor
4. Superconductor

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66. Atomic weight of silicon at 300 K is

1. 28.09
2. 72.7
3. 5.32
4. 16

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67. Avalanche breakdown in a semiconductor takes place

1. When forward current exceeds a certain value
2. When potential barrier is reduced to zero
3. When reverse bias exceeds a certain value
4. When forward bias exceeds a certain value

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68. Avalanche effects occurs at

1. Higher reverse voltages
2. Lower reverse voltages
3. Higher forward voltages
4. Lower forward voltages

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69. Charge of an electron is approximately equal to

1. 1.6022 x 10∧-19 C
2. -1.6726 x 10∧-27 C
3. -1.6022 x 10∧-19 C
4. No charge

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70. Clamper is also known as

1. DC restorer
2. Rectifier
3. Charger
4. Clipper

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