Related Questions

Power amplifiers generally use transformer coupling because transformer per-mits
A Cooling of the circuit
B Impedance matching
C Distortionless output
D Good frequency response
___________ coupling is generally employed in power amplifiers
A Transformer
B RC
C direct
D Impedance
A contractor employed 30 men to do a piece of work in 38 days. After 25 days , he employed 5 men more and the work was finished one day earlier. How many days he would have been behind, if he had not employed additional men?
A 1
B 114
C 134
D 112
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 RC coupling, the value of coupling capacitor is about ___________
A 100 pF
B 0.1 µF
C 0.01 µF
D 10 µF
The most costly coupling is ___________ coupling
A RC
B Direct
C Impedance
D Transformer
In a single stage transistor amplifier, RC and RL represent collector resistance and load resistance respectively. The transistor sees a d.c. load of ___________
A RC + RL
B RC || RL
C RL
D RC
If RC and RL represent the collector resistance and load resistance respectively in a single stage transistor amplifier, then a.c. load is
A RL + RC
B RC || RL
C RL - RC
D RC
“Maximum power output is obtained from a network when the load resistance is equal to the output resistance of the network as seen terminals of the load”. The above statement is associated with
A Millman’s theorem
B Thevenin’s theorem
C Superposition theorem
D Maximum power transfer theorem
In an amplifier, the coupling capacitors are employed for
A Limiting the bandwidth
B Matching the impedance
C Preventing of Dc mixing with input or output
D Controlling the output

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