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1) 1 db corresponds to_____________change in power level? a. 50% b. 35% c. 26% d. 22%
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2) The lower and upper cut off frequencies are also called_____________frequencies? a. Sideband b. Resonant c. Half-resonant d. Half-power
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3) The ear is not sensitive to___________? a. Frequency distortion b. Amplitude distortion c. Frequency as well as amplitude distortion d. None of the above
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4) Transformer coupling provides high efficiency because___________? a. Collector voltage is stepped up b. resistance is low c. collector voltage is stepped down d. none of the above
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5) The noise factor of an ideal amplifier expressed in db is_____________? a. 0 b. 1 c. 10 d. 100
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6) Transformer coupling is used for__________amplification? a. Power b. Voltage c. Current d. None of the above
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7) An advantage of RC coupling scheme is the___________? a. Good impedance matching b. Economy c. High efficiency d. None of the above
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8) In an RC coupled amplifier, the voltage gain over mid-frequency range_____________? a. Changes abruptly with frequency b. Is constant c. Changes uniformly with frequency d. None of the above
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9) RC coupling is used for_____________amplification? a. Voltage b. Current c. Power d. None of the above
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10) A radio receiver has____________of amplification? a. One stage b. Two stages c. Three stages d. More than one stages
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