MOSFET can be used as a__________?

A. Current controlled capacitor
B. Voltage controlled capacitor
C. Current controlled inductor
D. Voltage controlled inductors

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 horizontal intercept of dc load line is the same as ideal____________?

A. Cut off point
B. Saturation point
C. Operating point
D. Quasi saturation point

In a CB amplifier the maximum efficiency could be____________?

A. 99%
B. 85%
C. 50%
D. 25%

Introducing a resistor in the emitter of a common amplifier stabilizes the dc operating point against variations in____________?

A. Only the temperature
B. Only the β of the transistor
C. Both temperature & β
D. None of the above

The most commonly used amplifier in sample & hold circuits is______________?

A. A unity gain non-inverting amplifier
B. A unity gain inverting amplifier
C. An inverting amplifier with a gain of 10
D. An inverting amplifiers with a gain of 100

In a full-wave rectifier using two ideal diodes,Vdc & Vm are the dc & peak values of the voltage respectively across a resistive load. If PIV is the peak inverse voltage of the diode, then the appropriate relationships for this rectifier is____________?

A. Vdc = vm/π, piv=2vm
B. Vdc = 2vm/π, piv=2vm
C. Vdc = 2vm/π, piv=vm
D. Vdc = vm/π, piv=vm

The action of JFET in its equivalent circuit can best be represented as a_____________?

A. Current controlled current source
B. Current controlled voltage source
C. Voltage controlled voltage source
D. Voltage controlled current source

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

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