1. . Basic purpose of multistage arrangement is to increase the amplifier's
(A) Current gain
(B) Base resistance
(C) Voltage gain
(D) Slew rate
2. . Overall voltage gain (dB) in multistage system is the
(A) Product of individual voltage gains
(B) Division of individual voltage gains
(C) Sum of individual voltage gains
(D) Exponential of individual voltage gains
3. . Multistage amplifiers are also called
(A) Cascade amplifiers
(B) Cascade amplifiers
(C) Darlington amplifiers
(D) Base amplifiers
4. . Each amplifier in a cascaded arrangement is known as
(A) Gate
(B) Base
(C) Core
(D) Stage
5. . RC coupling is used for __________ amplification.
(A) Voltage
(B) Current
(C) Power
(D) None of the above
6. . 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
7. . The best frequency response is of __________ coupling
(A) RC
(B) Transformer
(C) Direct
(D) None of the above
8. . Transformer coupling is used for __________ amplification.
(A) Voltage
(B) Current
(C) Power
(D) None of the above
9. . In an RC coupling scheme, the coupling capacitor CC must be large enough __________
(A) Not to attenuate the low frequencies
(B) To pass DC between the stages
(C) To dissipate high power
(D) None of the above
10. . When a multistage amplifier is to amplify DC signal, then one must use __________ coupling
(A) RC
(B) Transformer
(C) Impedance
(D) Direct
11. . In practice, voltage gain is expressed in __________
(A) dB
(B) Volts
(C) Number
(D) None of the above
12. . 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
13. . Transformer coupling is generally employed when load resistance is?
(A) Large
(B) Very large
(C) Small
(D) None of the above
14. . The final stage of multistage amplifier uses __________ coupling?
(A) RC
(B) Impedance
(C) Transformer
(D) Direct
15. . 1 dB corresponds to __________ change in power level
(A) 50 %
(B) 35 %
(C) 26 %
(D) 22 %