Electronic Circuits

91. Quartz crystal is most commonly used in crystal oscillators because

1. It is easily available
2. It has superior electrical properties
3. It is quite inexpensive
4. It is very rugged

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92. RC coupling is used for _________ amplification.

1. Voltage
2. Current
3. Signal
4. Power

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93. Series current negative feedback occurs when the feedback voltage is proportional to the output

1. Voltage
2. Impedance
3. Current
4. Power

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94. The _________ of a common collector configuration is unity

1. Voltage gain
2. Current gain
3. Power gain
4. Input impedance

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95. The _________ the voltage regulation, the better the operation of the voltage supply circuit.

1. Smaller
2. Bigger
3. Moderate
4. Biggest

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96. The ac variations at the output side of power supply circuits are called _________ .

1. Ripples
2. Pulses
3. Waves
4. Filters

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97. The approximate operating frequency of a phase shift oscillator is given by

1. 1/(2η√Lc)
2. 1/(2ηRc√6)
3. 1/2ηRc
4. 1/29Rc

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98. The bandwidth of a single stage amplifier is _________ that of multistage amplifier.

1. Equal to
2. Less than
3. More than
4. Independent

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99. The bandwidth of an amplifier _________ when negative feedback is applied.

1. Decreases
2. Remains unchanged
3. Becomes infinite
4. Increases

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100. The basic concept of the electric wave filter was originated by

1. Campbell and Wagner
2. Norton
3. Foster
4. Bode and Darlington

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