Computer Programming MCQs

5739 MCQs  (Page 497 of 574)

In an RC coupling scheme, the coupling capacitor CC must be large enough______________?
A. To pass d.c. between the stages
B. Not to attenuate the low frequencies
C. To dissipate high power
D. None of the above
In obtaining the frequency response curve of an amplifier, the______________?
A. Amplifier level output is kept constant
B. Amplifier frequency is held constant
C. Generator frequency is held constant
D. Generator output level is held constant
In practice, voltage gain is expressed______________?
A. In db
B. In volts
C. As a number
D. None of the above
The final stage of a multistage amplifier uses______________?
A. Rc coupling
B. Transformer coupling
C. Direct coupling
D. Impedance coupling
RC coupling is not used to amplify extremely low frequencies because____________?
A. There is considerable power loss
B. There is hum in the output
C. Electrical size of coupling capacitor becomes very large
D. None of the above
The total gain of a multistage amplifier is less than the product of the gains of individual stages due to____________?
A. Power loss in the coupling device
B. Loading effect of the next stage
C. The use of many transistors
The use of many capacitors