MCQGeeks
0 : 0 : 1
CBSE
JEE
NTSE
NEET
English
UK Quiz
Quiz
Driving Test
Practice
Games
Quiz
Electrical Engineering
Multistage Transistor Amplifiers
Quiz 3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Q.1
The output of a microphone is rated at -db. The reference level isunder specified conditions. What is the output voltage of this microphone under the same sound conditions?
5 mV
2 mV
8 mV
5 mV
Q.2
In RC coupling, the value of coupling capacitor is about ___________
100 pF
0.1 µF
0.01 µF
10 µF
Q.3
The ear is not sensitive to ___________
Frequency distortion
Amplitude distortion
Frequency as well as amplitude distortion
None of the above
Q.4
RC coupling is generally confined to low power applications because of
Large value of coupling capacitor
Low efficiency
Large number of components
None of the above
Q.5
RC coupling is generally confined to low power applications because of
Large value of coupling capacitor
Low efficiency
Large number of components
None of the above
Q.6
___________ coupling provides the maximum voltage gain
RC
Transformer
Direct
Impedance
Q.7
If a three-stage amplifier has individual stage gains ofdb, 5 db anddb, then total gain in db is ___________
600 db
24 db
14 db
27 db
Q.8
In obtaining the frequency response curve of an amplifier, the ___________
Amplifier level output is kept constant
Amplifier frequency is held constant
Generator frequency is held constant
Generator output level is held constant
Q.9
An amplifier receives 0.1 W of input signal and deliversW of signal power. What is the power gain in db?
8 db
6 db
5 db
4 db
Q.10
1 db corresponds to ___________ change in power level
50%
35%
26%
22%
Q.11
A gain oftimes in voltage is expressed by ___________
60 db
30 db
120 db
600 db
Q.12
A gain of 1,000,times in power is expressed by ___________
30 db
60 db
120 db
600 db
Q.13
The power output of an audio system isW. 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 ?
2 W
6 W
68 W
None of the above
Q.14
When a multistage amplifier is to amplify d.c. signal, then one must use coupling
RC
Transformer
Direct
None of the above
Q.15
An advantage of RC coupling scheme is the ___________
Good impedance matching
Economy
High efficiency
None of the above
Q.16
In an RC coupling scheme, the coupling capacitor CC must be large enough ___________
To pass d.c. between the stages
Not to attenuate the low frequencies
To dissipate high power
None of the above
Q.17
1 db corresponds to ___________ change in voltage or current level
40%
80%
20%
25%
Q.18
The best frequency response is of ___________ coupling
RC
Transformer
Direct
None of the above
Q.19
The upper or lower cut off frequency is also called ___________ frequency
Resonant
Sideband
3 db
None of the above
Q.20
The lower and upper cut off frequencies are also called ___________ frequencies
Sideband
Resonant
Half-resonant
Half-power
0 h : 0 m : 1 s
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Report Question
×
What's an issue?
Question is wrong
Answer is wrong
Other Reason
Want to elaborate a bit more? (optional)
Support mcqgeeks.com by disabling your adblocker.
×
Please disable the adBlock and continue.
Thank you.
Reload page