The current gain of a BJT is__________?
A. gm r0
B. gm / r0
C. gm rπ
D. gm /rπ
Month: December 2018
An ideal OP-AMP is an ideal___________?
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
An amplifier without feedback has a voltage gain of 50,input resistance os 1 KΩ & Output resistance of 2.5KΩ.The input resistance of the current-shunt negative feedback amplifier using the above amplifier with a feedback factor of 0.2 is___________?
An amplifier without feedback has a voltage gain of 50,input resistance os 1 KΩ & Output resistance of 2.5KΩ.The input resistance of the current-shunt negative feedback amplifier using the above amplifier with a feedback factor of 0.2 is___________?
A. 1/11KΩ
B. 1/5KΩ
C. 5KΩ
D. 11KΩ
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__________?
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
The parameter hie stands for input impedance in _____________?
The parameter hie stands for input impedance in _____________?
A. CB arrangement with output shorted
B. CC arrangement with output shorted
C. CE arrangement with output shorted
D. None of the above
The values of h parameter of a transistor in CE arrangement are ____________ arrangement?
The values of h parameter of a transistor in CE arrangement are ____________ arrangement?
A. The same as for CB
B. The same as for CC
C. Different from that in CB
D. None of the above
The hfe parameter is called ______________in CE arrangement with output shorted?
The hfe parameter is called ______________in CE arrangement with output shorted?
A. Voltage gain
B. Current gain
C. Input impedance
D. None of the above
If temperature changes, h parameters of a transistor ________________?
If temperature changes, h parameters of a transistor ________________?
B. May or may not change
C. Do not change
D. Also change
E. None of the above
If the operating point changes, the h parameters of transistor_____________?
If the operating point changes, the h parameters of transistor_____________?
A. Also change
B. Do not change
C. May or may not change
D. None of the above
The dimensions of hie parameter are _______________?
The dimensions of hie parameter are _______________?
A. Mho
B. Ohm
C. Farad
D. None of the above