A. ac collector voltage is 180° out of phase with ac base voltage
B. ac emitter voltage is 180° out of phase with ac base voltage
C. ac collector voltage is in phase with ac base voltage
D. none of the above
Related Mcqs:
- Which of the following is not associated with a p-n junction?
A. junction capacitance
B. charge storage capacitance
C. depletion capacitance
D. channel length modulation - 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 - A 741-type OP-AMP has a gain-bandwidth product of 1MHz. A non-inverting amplifier using this op-amp & having a voltage gain of 20db will exhibit -3db bandwidth of__________?
A. 50 KHz
B. 100KHz
C. 1000/17 KHz
D. 1000/7.07 KHz - In the differential voltage gain & the common mode voltage gain of a differential amplifier are 48db &2db respectively, then its common mode rejection ratio is__________?
A. 23dB
B. 25dB
C. 46dB
D. 50dB - In a transistor leakage current mainly depends on__________?
A. doping of base
B. size of emitter
C. rating of transistor
D. temperature - When a transistor is connected in common emitter mode, it with have__________?
A. negligible input resistance and high output resistance
B. high input resistance and low output resistance
C. medium input resistance and high output resistance
D. low input resistance as well as output resistance - An n- channel JFET has IDSS=2mA,and Vp=-4v.Its transconductance gm=in mA/V)for an applied gate to source voltage VGS=-2v is___________?
A. 0.25
B. 0.5
C. 0.75
D. 1 - 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 - MOSFET can be used as a__________?
A. current controlled capacitor
B. voltage controlled capacitor
C. current controlled inductor
D. voltage controlled inductors - An amplifier using an opamp with slew rate SR=1v/µsec has a gain of 40db.if this amplifier has to faithfully amplify sinusoidal signals from dc to 20 KHz without introducing any slew-rate induced distortion, then the input signal level must not exceed________?
A. 795mV
B. 395mV
C. 795 mV
D. 39.5mV
