Solid State Devices

91. If the temperature of a semiconductor material increases, the number of free electrons

1. Decreases
2. Increases
3. Remains the same
4. Becomes zero

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92. Impedance matching in circuit is important for _________ transfer of energy.

1. Minimum
2. Enough
3. Maximum
4. Limited

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93. In a push-pull power amplifier, an input transformer can be used as a _________providing equal amplitude input signals opposite in polarity

1. Phase reversal
2. Phase-splitter
3. Limiter
4. Discriminator

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94. In an amplifier, the emitter junction is

1. Forward biased
2. Reverse biased
3. Grounded
4. Shorted

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95. In an n-type semiconductor, free electrons are called

1. Minority carriers
2. Valence electrons
3. Majority carriers
4. Charge carriers

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96. in an n-type semiconductor, holes are called

1. minority carriers
2. majority carriers
3. protons
4. charge carriers

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97. In enhancement-type MOSFETs, the _________ region is used if the FET is to operate as an amplifier.

1. Triode region
2. Diode region
3. Cut-off region
4. Saturation region

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98. In enhancement-type MOSFETs, the _________ regions are used for operation as a switch.

1. Triode and saturation
2. Cut-off and saturation
3. Saturation and active
4. Cut-off and triode

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99. In power supplies, circuits that are employed in separating the ac and dc components and bypass the ac components around the load, or prevent their generation are called

1. Filters
2. Limiters
3. Series capacitors
4. Diode circuits

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100. It is a stable positive charge in the nucleus that is not free to move

1. Hole
2. Proton
3. Neutron
4. Electron

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