Related Questions

In order to get more voltage gain from a transistor amplifier, the transistor used should have ___________
A Thin base
B Thin collector
C Wide emitter
D None of the above
The graph of current gain versus collector current indicates that the current gain
A varies enormously
B is contant
C varies slightly
D equals the collector current divided by the base current
E None of the above
If the current gain of the amplifier is X, its voltage gain is Y, then its power gain will be
A $$\frac{{\text{X}}}{{\text{Y}}}$$
B X × Y
C X + Y
D X - Y
Ponchon Savarit method is based on the use of enthalpy concentration diagram, which contains the bubble point curve (saturated liquid curve), dew point curve (saturated vapour curve) and equilibrium tie lines. As compared to McCabe-Thiele's method, this method
A Is more accurate in finding the number of equilibrium stages
B Accounts for the enthalpy changes in the process
C Facilitates direct calculation of heat load on reboiler & condenser from, the diagram used in this method
D All of the above
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
The value of collector load RC in a transistor amplifier is ___________ the output impedance of the transistor.
A The same as
B Less than
C More than
D None of the above
If a transistor amplifier feeds a load of low resistance (e.g. speaker), then voltage gain will be ___________
A High
B Very high
C Moderate
D Low
Generally, the gain of a transistor amplifier falls at high frequencies due to the
A Internal Capacitance of the device
B Coupling capacitor at the input
C Skin effect
D Coupling capacitor at the output
Which of the following amplifier circuit using junction transistor has the best gain?
A Common base
B Common emitter
C Common collector
D All have the same gain
The gain of an amplifier with feedback is known as ___________ gain
A Resonant
B Open loop
C Closed loop
D None of the above

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