The maximum efficiency of transformer coupled class A power amplifier is ___________
The maximum efficiency of transformer coupled class A power amplifier is ___________
Power amplifiers generally use transformer coupling because transformer per-mits
Power amplifiers generally use transformer coupling because transformer per-mits
Class ___________ operation gives the maximum distortion
Class ___________ operation gives the maximum distortion
What will be the collector efficiency of a power amplifier having zero signal power dissipation of 5 watts and a.c. power output of 2 watts?
What will be the collector efficiency of a power amplifier having zero signal power dissipation of 5 watts and a.c. power output of 2 watts?
Low efficiency of a power amplifier results in ___________
Low efficiency of a power amplifier results in ___________
What turn ratio (Np/Ns) of transformer is required to match 4 Ω speaker to a transistor having an output impedance of 8000 O?
What turn ratio (Np/Ns) of transformer is required to match 4 Ω speaker to a transistor having an output impedance of 8000 O?
The most important consideration in power amplifier is ___________
The most important consideration in power amplifier is ___________
A 2-transistor class B power amplifier is commonly called ___________ amplifier
A 2-transistor class B power amplifier is commonly called ___________ amplifier
The output stage of a multistage amplifier is also called ___________
The output stage of a multistage amplifier is also called ___________
Class C power amplifier has the highest collector efficiency
Class C power amplifier has the highest collector efficiency
If the power rating of a transistor is 1W and collector current is 100mA, then maximum allowable collector voltage is ___________
If the power rating of a transistor is 1W and collector current is 100mA, then maximum allowable collector voltage is ___________
For the same a.c. power output as above, what should be the minimum power rating of transistor for class B operation?
For the same a.c. power output as above, what should be the minimum power rating of transistor for class B operation?
The output transformer used in a power amplifier is a ___________ transformer
The output transformer used in a power amplifier is a ___________ transformer
The most costly coupling is ___________ coupling
The most costly coupling is ___________ coupling
The maximum a.c. power output from a class A power amplifier is 10 W. What should be the minimum power rating of the transistor used ?
The maximum a.c. power output from a class A power amplifier is 10 W. What should be the minimum power rating of the transistor used ?
The size of a power transistor is made considerably large to ___________
The size of a power transistor is made considerably large to ___________
When a transistor is cut off___________
When a transistor is cut off___________
The maximum collector efficiency of class B operation is ___________
The maximum collector efficiency of class B operation is ___________
The disadvantage of impedance matching is that it ___________
The disadvantage of impedance matching is that it ___________
If a transistor is operated in such a way that output current flows for 60° of the input signal, then it is ___________ operation
If a transistor is operated in such a way that output current flows for 60° of the input signal, then it is ___________ operation
Power amplifiers handle ___________ signals compare to voltage amplifiers
Power amplifiers handle ___________ signals compare to voltage amplifiers
In class A operation, the operating point is generally located ___________ of the d.c. load line.
In class A operation, the operating point is generally located ___________ of the d.c. load line.
A class A power amplifier uses ___________
A class A power amplifier uses ___________
The maximum efficiency of resistance loaded class A power amplifier is
The maximum efficiency of resistance loaded class A power amplifier is
If the gain versus frequency curve of a transistor amplifier is not flat, then there is distortion.
If the gain versus frequency curve of a transistor amplifier is not flat, then there is distortion.
An AF amplifier is shielded to ___________
An AF amplifier is shielded to ___________
The pulsating d.c. applied to power amplifier causes ___________
The pulsating d.c. applied to power amplifier causes ___________
When no signal is applied, the approximate collector efficiency of class A power amplifier is
When no signal is applied, the approximate collector efficiency of class A power amplifier is
A power amplifier has comparatively ___________ ß
A power amplifier has comparatively ___________ ß
Transformer coupling can be used in ___________ amplifiers
Transformer coupling can be used in ___________ amplifiers
A class A power amplifier is sometimes called ___________ amplifier
A class A power amplifier is sometimes called ___________ amplifier
The class B push-pull circuit can deliver 100 W of a.c. output power. What should be the minimum power rating of each transistor?
The class B push-pull circuit can deliver 100 W of a.c. output power. What should be the minimum power rating of each transistor?
The driver stage usually employs___________
The driver stage usually employs___________
___________ coupling is generally employed in power amplifiers
___________ coupling is generally employed in power amplifiers
The output stage of a multistage amplifier usually employs ___________
The output stage of a multistage amplifier usually employs ___________
If the zero signal dissipation of a transistor is 1W, then power rating of the transistor should be at least ___________
If the zero signal dissipation of a transistor is 1W, then power rating of the transistor should be at least ___________
The push-pull circuit must use ___________ operation
The push-pull circuit must use ___________ operation
A transformer coupled class A power amplifier has a load of 100 Ω on the secondary. If the turn ratio is 10:1, what is the value of load appearing on the primary?
A transformer coupled class A power amplifier has a load of 100 Ω on the secondary. If the turn ratio is 10:1, what is the value of load appearing on the primary?
