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.Management Sciences
Category: Analog Electronics
In a p-n junction diode under reverse bias , the magnitude of electric field is maximum at_____________?
A. the edge of the depletion region on the p-side
B. the edge of the depletion region on the n-side
C. the p-n junction
D. the center of the depletion region on the n-side
An ideal OP-AMP is an ideal___________?
A. Current controlled Current source
B. Current controlled voltage source
C. Voltage controlled voltage source
D. voltage controlled current source
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 early effect in a bipolar junction transistor is caused by_______________?
A. fast turn-on
B. fast turn-off
C. large collector-base reverse bias
D. large emitter-base forward bias
In deriving ac equivalent circuit for an amplifier circuit, we short circuit___________?
A. all resistors
B. all transistors
C. all inductors
D. all capacitors
The MOSFET switch in its on-state may be considered equivalent to_____________?
A. resistor
B. inductor
C. capacitor
D. battery
Class AB operation is often used in power large signal amplifiers in order to_________?
A. get maximum efficiency
B. remove even harmonics
C. overcome a crossover distortion
D. reducing collector dissipation
The current gain of a bipolar transistor drops at high frequencies because of____________?
A. Transistor capacitances
B. High current effects in the base
C. Parasitic inductive elements
D. The early effect
Negative feedback in an amplifier____________?
A. Reduces gain
B. Increase frequency &phase distortion
C. Reduces bandwidth
D. Increases noise
MOSFET can be used as a__________?
A. current controlled capacitor
B. voltage controlled capacitor
C. current controlled inductor
D. voltage controlled inductors
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