Multi-Stage Transistor Mcqs – (Electrical Engineering) MCQs Latest For FPSC, PPSC, NTS, KPPSC, SPSC & Other Tests
“ Multi-Stage Transistor Mcqs“. Tab this page to check “Latest Multi-Stage Transistor Mcqs “ for the preparation of competitive mcqs, FPSC mcqs, PPSC mcqs, SPSC mcqs, KPPSC mcqs, AJKPSC mcqs, BPSC mcqs, NTS mcqs, PTS mcqs, OTS mcqs, Atomic Energy mcqs, Pak Army mcqs, Pak Navy mcqs, CTS mcqs, ETEA mcqs and others. The most occurred mcqs of Multi-Stage Transistor in past papers. Past papers of Multi-Stage Transistor Mcqs. Past papers of Multi-Stage Transistor Mcqs. Mcqs are the necessary part of any competitive / job related exams. The Multi-Stage Transistor Mcqs having specific numbers in any written test. It is therefore everyone have to learn / remember the related Multi-Stage Transistor Mcqs. The Important series of Multi-Stage Transistor Mcqs are given below:
A gain of 1000 times in voltage is expressed by_______________?
A. 60 db
B. 120 db
C. 30 db
D. 600 db
The upper or lower cut off frequency is also called______________frequency?
A. Sideband
B. Resonant
C. 3 db
D. None of the above
The power output of an audio system is 18 W. For a person to notice an increase in the output (loudness or sound intensity) of the system, what must the output power be increased to ?
A. 2 W
B. 6 W
C. 68 W
D. None of the above
The number of stages that can be directly coupled is limited because___________?
A. Changes in temperature cause thermal instability
B. It becomes difficult to bias the circuit
C. Circuit becomes heavy and costly
D. None of the above
The bandwidth of a single stage amplifier is_____________that of a multistage amplifier?
A. More than
B. Less than
C. The same as
D. Data insufficient
The output of a microphone is rated at -52 db. The reference level is 1V under specified conditions. What is the output voltage of this microphone under the same sound conditions?
A. 2 mV
B. 5 mV
C. 8 mV
D. 5 mV
If the power level of an amplifier reduces to half, the db gain will fall by___________?
A. 2 db
B. 5 db
C. 10 db
D. 3 db
In the initial stages of a multistage amplifier, we use______________?
A. RC coupling
B. Direct coupling
C. Transformer coupling
D. None of the above
A gain of 1,000,000 times in power is expressed by_____________?
A. 120 db
B. 60 db
C. 30 db
D. 600 db
In transistor amplifiers, we use_____________transformer for impedance matching?
A. Same turn ratio
B. Step down
C. Step up
None of the above
If a three-stage amplifier has individual stage gains of 10 db, 5 db and 12 db, then total gain in db is____________?
A. 24 db
B. 600 db
C. 14 db
D. 27 db
Transformer coupling is generally employed when load resistance is______________?
A. Very large
B. Large
C. Small
D. None of the above
_____________coupling provides the maximum voltage gain?
A. Direct
B. Transformer
C. RC
D. Impedance
In RC coupling, the value of coupling capacitor is about_______________?
A. 0.1 µF
B. 100 pF
C. 0.01 µF
D. 10 µF
The best frequency response is of_____________coupling?
A. Transformer
B. RC
C. Direct
D. None of the above
In obtaining the frequency response curve of an amplifier, the______________?
A. Amplifier frequency is held constant
B. Amplifier level output is kept constant
C. Generator frequency is held constant
D. Generator output level is held constant
In an RC coupling scheme, the coupling capacitor CC must be large enough______________?
A. To dissipate high power
B. Not to attenuate the low frequencies
C. To pass d.c. between the stages
D. None of the above
When a multistage amplifier is to amplify d.c. signal, then one must use_____________coupling?
A. Transformer
B. RC
C. Direct
D. None of the above
In practice, voltage gain is expressed______________?
A. In db
B. As a number
C. In volts
D. None of the above
The final stage of a multistage amplifier uses______________?
A. Direct coupling
B. Transformer coupling
C. RC coupling
D. Impedance coupling
RC coupling is not used to amplify extremely low frequencies because____________?
A. There is hum in the output
B. There is considerable power loss
C. Electrical size of coupling capacitor becomes very large
D. None of the above
1 db corresponds to_____________change in voltage or current level?
A. 40%
B. 20%
C. 80%
D. 25%
The total gain of a multistage amplifier is less than the product of the gains of individual stages due to____________?
A. The use of many transistors
B. Loading effect of the next stage
C. Power loss in the coupling device
D. The use of many capacitors
A current amplification of 2000 is a gain of_________________?
A. 20 db
B. 66 db
C. 3 db
D. 200 db
The purpose of RC or transformer coupling is to_____________?
A. Increase thermal stability
B. Separate bias of one stage from another
C. Block a.c.
D. None of the above
The value of emitter capacitor CE in a multistage amplifier is about____________?
A. 100 pF
B. 1 µF
C. 0.01 µF
D. 50 µF
RC coupling is generally confined to low power applications because of____________?
A. Large number of components
B. Low efficiency
C. Large value of coupling capacitor
D. None of the above
An amplifier receives 0.1 W of input signal and delivers 15 W of signal power. What is the power gain in db?
A. 8 db
B. 5 db
C. 6 db
D. 4 db
The gain of an amplifier is expressed in db because_____________?
A. Calculations become easy
B. It is a simple unit
C. Human ear response is logarithmic
D. None of the above
The frequency response of transformer coupling is___________?
A. Very good
B. Good
C. Excellent
D. Poor
1 db corresponds to_____________change in power level?
A. 35%
B. 50%
C. 26%
D. 22%
The lower and upper cut off frequencies are also called_____________frequencies?
A. Resonant
B. Sideband
C. Half-resonant
D. Half-power
The ear is not sensitive to___________?
A. Frequency distortion
B. Frequency as well as amplitude distortion
C. Amplitude distortion
D. None of the above
Transformer coupling provides high efficiency because___________?
A. collector voltage is stepped down
B. resistance is low
C. Collector voltage is stepped up
D. none of the above
The noise factor of an ideal amplifier expressed in db is_____________?
A. 0
B. 1
C. 1
D. 10
Transformer coupling is used for__________amplification?
A. Power
B. Current
C. Voltage
D. None of the above
An advantage of RC coupling scheme is the___________?
A. High efficiency
B. Economy
C. Good impedance matching
D. None of the above
In an RC coupled amplifier, the voltage gain over mid-frequency range_____________?
A. Changes uniformly with frequency
B. Is constant
C. Changes abruptly with frequency
D. None of the above
RC coupling is used for_____________amplification?
A. Voltage
B. Power
C. Current
D. None of the above
A radio receiver has____________of amplification?
A. Two stages
B. One stage
C. Three stages
D. More than one stages